Constellation Orion (Hunter)

Properties
The constellation Orion is without a doubt the brightest and perhaps the most famous in the sky. It can be seen in the sky especially in winter. To the northeast is the constellation Gemini, to the northwest Taurus, to the southwest Eridanus, south Lepus and east Monoceros.

By far the most striking feature are the three bright belt stars Alnitak, Alnilam and Mintaka, which lie in a row. But the two shoulder stars Betelgeuse and Bellatrix, as well as the foot stars Saiph and Rigel are not to be despised. Together with the belt stars they form two striking trapezoids. North of the two trapezoids is a small triangle made up of three stars, which represents the head of Orion. A row of weaker stars and the Orion Nebula, which is clearly visible to the naked eye, form the sword of Orion in the southern trapezoid. The constellation therefore reflects the ideal warrior: a large body with a small head. Orion covers an area of 594 square degrees in the firmament and culminates around midnight on December 13th. [9, 15]
Orion is the spectacle of a star formation area with the Orion Nebula, about 1350 light years away, as the central, brightest part of the Orion molecular cloud complex, which extends over the entire constellation spreads out and composed of luminous, reflective as well as dark clouds.
Stars with Proper Names:
- α Ori: Betelgeuse, Betelguex, Betelgeuze, Beteiguex, Al Mankib
- β Ori: Rigel, Algebar, Elgebar
- γ Ori: Bellatrix, The Amazon Star
- δ Ori: Mintaka, Mintika
- ε Ori: Alnilam, Alnihan, Alnitam
- ζ Ori: Alnitak, Alnitah
- ι Ori: Nair Al Saif, Hatysa
- κ Ori: Saiph
- λ Ori: Meissa, Heka
- υ Ori: Thabit, Tabit
Deep-Sky Object Descriptions
Mythology and History
Orion is a legendary figure from the most ancient times. He was seen as a role model for a great hunter who won the love of goddesses because of his beauty, but who also persecuted women himself and stalked them without ever reaching them. Orion was the son of Zeus, one third of Poseidon and one third of Hermes. He is also called the «earth-born». But first the story of its origin:
Zeus, the king of the gods, and Poseidon, the god of the seas, and Hermes, the messenger of the gods, went on their way together one evening and passed the little hut of old Hyreius. This was a poor man and had little land to cultivate. He stood in front of his hut and invited them to spend the night. He did not yet recognize the divinity of the three, because they hid them from him.

The three gods entered the old man's house, which was blackened with dark smoke. Little embers glowed on the hearth. Hyreius knelt, made a new fire, and brought two pots of beans and cabbage to a boil. With a shaky hand, he offered his guests red wine. Poseiden was the first to receive the cup, emptied it and said: «Let Zeus drink next.» The old man turned pale when he heard the name, but he composed himself. Then he slaughtered his only bull, which he needed to plow his barren field, and roasted it over a mighty fire. He took out another wine, which he kept in a smoke-blackened jug and which he had once bottled when he was young. The three gods sat down without hesitation on the low deposit, which consisted only of river reeds covered with a linen cloth.
The table soon glowed with the meat and wine that was served. The mixing jug was a red earthen vessel, the cups were made of beech wood. Zeus was touched by the sacrifice of old Hyreius and said: «If you ask for something, wish it! You will receive everything.» The peaceful old man told of his beloved, recently deceased wife and his dearest wish to become a father.
Zeus, Poseidon and Hermes agreed and they all stepped on the peeled, fresh skin of the bull. They emptied their bladder on it and then covered the damp skin by throwing earth on it. It took ten months for it to become a child. Hyreius called it Urion because it was so conceived. The boy grew up very quickly and became handsome and strong. Over time, however, the first letter of his name lost its old sound and from then on it was called Orion. [20]
Orion once hunted a wild beast in the kingdom of Chios, the ruler of which had a beautiful daughter. Orion asked if he could marry her, but the king did not want such a fearsome son-in-law. He tricked Orion by first making him drunk and then blind. Orion, deprived of his eyesight, followed the sound of the hammering hammer of the blacksmith god Hephaestus. The farrier gave the hunter his assistant, a limping cyclops named Cedalion. Orion carried Cedalion on his shoulders, and Cedalion lent Orion his powerful eyesight. He finally helped him to find a country in the "east of the east". There the rising sun healed Orion's eyes. [65]

In its beauty and mightiness, Orion even knew how to captivate goddesses. Delia chose him as a companion, he was the goddess' protector and her follower. According to Homer's report, there was the goddess of the dawn, Eos (Latin Aurora), who, in her constant infatuation, knew how to win Orion. But the daughters of Atlas, the bearer of the heavens, were also connected to him. They were the Pleiades whom Orion loved but never reached. To this day he hurries through the sky night after night without ever catching up with her. Even the virgin goddess of the hunt, Artemis (also moon goddess) was blinded by Orion and finally killed him with arrows out of jealousy and resentment. In retrospect, you can hear another, somewhat weaker version, according to which Orion had to die because he killed too many animals - after all, the goddess of the hunt is also the protector of all wild animals. [20]
According to another version of death, the relationship between Orion and Artemis aroused the jealousy of their twin brother, the sun god Apollo. One day Apollo and Artemis were standing on a beach and he asked them to meet a dark object far away on the sea. That object was Orion's head, visible over the waves as it walked to the bottom of the ocean. Artemis' arrow killed Orion. To comfort you, Zeus granted the hunter a place under the stars. [65]
Another death version is told in which the Scorpio occurs. Hera, the jealous wife of Zeus, sent the scorpion to kill Orion. Even today, Orion is only in the sky when Scorpio has already set. [20, 65]
The Orion was known as a giant, hunter and warrior. The Roman poet Catullus transcribed the Greek name into the word Oarion. According to Ovid's story, Urion is also used, as well as the names Deanae Comes and Amasius, which allude to Orion being the companion and lover of Diana was.
In the Egyptian culture, the much-noticed constellation is close to the gods Horus and Osiris. According to Egyptian myths, Osiris was murdered, dismembered and scattered by his brother Seth, a seedy, ancient Egyptian god. Isis, Osiris' sister, was looking for the dead brother, and, as it were, picked it up and resuscitated it. She then received her son Horus from him, who later assumed the inheritance of Osiris. Osiris was judge and ruler in the realm of the dead and, as the god of vegetation, let plants sprout from the earth and flourish.
From the Jewish tradition comes an identification with Nimrod, an Old Testament figure who was seen as a great hunter. The founding of Babylonia and Assyria is said to go back to him. The image of the hunter for Orion also exists in Roman culture, he was called Venator.
Indians from central Brazil see the Orion as a large rack on which cassava is dried. Cassava is a root plant from which starch is obtained, which is the most important food. Sirius was also included in this picture. [20, 56]
Catalogs
HR | B | F | DM | HD | SAO | FK5 | IR | M* | ADS | VarID | RA | Dec | vMag | spType | dMag | Sep ["] | Remarks |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
HR 1507 | BD+10 621 | 30034 | 94095 | W | 1705 | 04 44 25.8 | +11 08 46 | 5.40 | F0V | 5.8 | 74.7 | G:In Hyades cluster; Mel 25 #111.,VAR:Delta Sct? In Hyades instability strip. | |||||
HR 1519 | BD+11 646 | 30210 | 94111 | 2353 | W | 04 46 01.7 | +11 42 20 | 5.37 | A2m | 7.5 | 93.8 | G:In Hyades cluster; Mel 25 #112. | |||||
HR 1522 | BD-03 884 | 30321 | 131481 | 04 46 24.1 | -02 57 16 | 6.33 | A2V | ||||||||||
HR 1534 | BD+03 681 | 30545 | 112098 | 04 48 44.6 | +03 35 18 | 6.03 | K1III | ||||||||||
HR 1543 | π3 | 1 | BD+06 762 | 30652 | 112106 | 1134 | I | W | 1731 | 04 49 50.4 | +06 57 41 | 3.19 | F6V | 5.5 | 94.6 | D:Visual companion probably optical.,N:Designated Tabit by Becvar but Allen gives Thabit as Burritt's name for an unlettered star on his atlas, the Upsilon,N:of Heis (HR 1855). The superscripts for Pi Ori adopted in the Harvard catalogues and taken over in the BS,N:correspond to the Heis atlas and Argelander's identifications of Flamsteed numbers. Very many old catalogues follow the,N:BAC. Heis superscripts 1,2,3,4 are respectively 4,2,1,3 in the BAC.,VAR:Delta Sct? Amp. 0.05V. | |
HR 1544 | π2 | 2 | BD+08 777 | 30739 | 112124 | I | 04 50 36.7 | +08 54 01 | 4.36 | A1Vn | N:See HR 1543.,R:Radius relative to Sun = 2.0. | ||||||
HR 1552 | π4 | 3 | BD+05 745 | 30836 | 112142 | 179 | 1742 | 04 51 12.4 | +05 36 18 | 3.69 | B2III+B2IV | G:Ori OB1.,N:See HR 1543.,SB:9.5191d, K 25.8k/s, V0 +23.3k/s, asini 3.38. | |||||
HR 1553 | BD+09 668 | 30870 | 112150 | 04 51 43.4 | +09 58 30 | 6.11 | B5V | N:Formerly 1 Aur now in Perseus. | |||||||||
HR 1556 | ο1 | 4 | BD+14 777 | 30959 | 94176 | 1136 | I | Omi1 Ori | 04 52 32.0 | +14 15 02 | 4.74 | S3.5/1- | G:Wolf 630 group.,S:Also classified S4Zr1Ti4 and M3.2IIIas.,VAR:SRb 4.65 - 4.88V, about 30d. | ||||
HR 1562 | 5 | BD+02 800 | 31139 | 112179 | I | 1755 | 04 53 22.8 | +02 30 29 | 5.33 | M1III | |||||||
HR 1565 | BD+01 847 | 31209 | 112191 | 04 53 55.8 | +01 34 10 | 6.61 | A1Vn | ||||||||||
HR 1567 | π5 | 8 | BD+02 810 | 31237 | 112197 | 180 | Pi5 Ori | 04 54 15.1 | +02 26 26 | 3.72 | B3III+B0V | G:Ori OB1.,SB:3.700373d, K 57.9k/s, V0 +24.2k/s, asini 2.95.,VAR:Ell 3.66 - 3.73V, 3.700363d. | |||||
HR 1569 | 6 | BD+11 675 | 31283 | 94197 | 2368 | S | 04 54 46.9 | +11 25 34 | 5.19 | A3V | |||||||
HR 1570 | π1 | 7 | BD+09 683 | 31295 | 94201 | W | 04 54 53.8 | +10 09 03 | 4.65 | A0Vp | 4.2 | 171.6 | G:Hyades?,N:See HR 1543.,R:Radius relative to Sun = 2.7.,S:Lambda Boo star, Ca, Mg 4481 wk. | ||||
HR 1571 | BD+07 755 | 31296 | 112203 | 2369 | I | 1763 | 04 54 47.8 | +07 46 45 | 5.33 | gK1 | |||||||
HR 1574 | BD+00 893 | 31331 | 112206 | 04 54 50.7 | +00 28 03 | 5.99 | B5V | ||||||||||
HR 1576 | BD+14 787 | 31373 | 94212 | 04 55 50.3 | +15 02 24 | 5.81 | B9V | ||||||||||
HR 1578 | BD+05 769 | 31411 | 112220 | 04 55 58.4 | +05 23 57 | 6.50 | A0V | ||||||||||
HR 1580 | ο2 | 9 | BD+13 740 | 31421 | 94218 | I | 3540 | 04 56 22.3 | +13 30 52 | 4.07 | K2-IIIFe-1 | 7.5 | 100.4 | D:Optical group.,G:Hyades?,S:Also classified K2IIIbCN-1. | |||
HR 1591 | BD-01 762 | 31623 | 131625 | 2373 | 04 57 17.2 | -01 04 02 | 6.23 | F2 | |||||||||
HR 1596 | BD-02 1080 | 31739 | 131640 | 3570 | 04 58 10.8 | -02 12 45 | 6.35 | A2V | 5.5 | 21.0 | |||||||
HR 1600 | BD+14 796 | 31764 | 94240 | 3579 A | 1788 | 04 58 59.4 | +14 32 34 | 6.09 | B7V | 1.5 | 39.3 | D:AB probably optical. B, 8.0v B9; C, 9.8v at 54"; D, by Wallenquist, mag. diff 7.1 at 90". | |||||
HR 1601 | π6 | 10 | BD+01 872 | 31767 | 112281 | I | 1786 | 04 58 32.9 | +01 42 51 | 4.47 | K2-II | ||||||
HR 1609 | BD+03 736 | 32039 | 112304 | 3597 B | 1800 | 05 00 32.6 | +03 36 55 | 7.03 | B9Vn | 0.4 | 21.3 | D:Fixed with HR 1610. | |||||
HR 1610 | BD+03 737 | 32040 | 112305 | 3597 A | 1800 | 05 00 33.9 | +03 36 58 | 6.66 | B9Vn | 0.4 | 21.3 | D:Fixed with HR 1609. Colors for combined light. | |||||
HR 1613 | BD-02 1095 | 32115 | 131684 | 05 00 39.8 | -02 03 56 | 6.32 | A8IV | ||||||||||
HR 1618 | BD+00 923 | 32263 | 112334 | 2376 | 1806 | 05 01 50.3 | +00 43 20 | 5.92 | K0 | ||||||||
HR 1619 | BD+01 886 | 32273 | 112340 | 3623 A | 05 02 00.0 | +01 36 32 | 6.24 | B8V | 1.3 | 14.2 | D:BC binary 7.7, 10.7v sep. 0.5"; AxBC binary, B = GC 6148 A1IV?, vsini 53:k/s; D, 9.5 at 130". | ||||||
HR 1638 | 11 | BD+15 732 | 32549 | 94290 | 1140 | V1032 Ori | 05 04 34.1 | +15 24 15 | 4.68 | A0pSi | G:Member of Pleiades group.,VAR:Alpha CV, 4.65 - 4.69V, amp. 0.03y, 4.6398d. | ||||||
HR 1646 | BD-03 998 | 32686 | 131742 | 2378 | 05 04 54.5 | -03 02 23 | 6.05 | B5IV | G:Ori OB1a assoc. | ||||||||
HR 1648 | BD+00 939 | 32736 | 112406 | I | W Ori | 05 05 23.7 | +01 10 39 | 6.17 | C6II | VAR:SRb 8.2 - 12.4p, 212d. Mean mag. varies in period 2450d. | |||||||
HR 1662 | 13 | BD+09 736 | 33021 | 112436 | W | 05 07 38.3 | +09 28 19 | 6.17 | G1IV | 3.8 | 124.0 | G:Wolf 630 group; Hyades? | |||||
HR 1664 | 14 | BD+08 866 | 33054 | 112440 | 3711 | 05 07 52.9 | +08 29 54 | 5.34 | Am | 0.8 | 0.7 | D:5.78 Am, 6.62 Am, 198.9y, a = 1.04". Mean mass 1.7 solar. Combined mag., colors. CPM with ADS 3712 = GC6270, 9.8, 8 K2,D:sep. 3" at 348".,DYN:0.021". | |||||
HR 1672 | 16 | BD+09 743 | 33254 | 112467 | 1142 | W | 1849 | 05 09 19.6 | +09 49 46 | 5.43 | A2m | 4.5 | 168.0 | G:Hyades cluster; Mel 25 #130.,R:Radius relative to Sun = 2.2.,S:Spectrum in violet indicates luminosity III; G-band region, V.,SB:155.83d, K 8.2k/s, V0 +42.9k/s, asini 13.0.,VAR:2.87d not confirmed. | |||
HR 1676 | 15 | BD+15 752 | 33276 | 94359 | W | 05 09 42.0 | +15 35 50 | 4.82 | F2IV | D:Suspected visual double probably single: unresolved by speckle interferometry. | |||||||
HR 1681 | BD-00 867 | 33419 | 131834 | 05 10 03.2 | -00 33 55 | 6.10 | K0III | ||||||||||
HR 1684 | BD+15 759 | 33554 | 94377 | 2391 | I | 05 11 41.6 | +16 02 44 | 5.18 | K5III | ||||||||
HR 1685 | BD-02 1161 | 33555 | 131847 | 05 10 58.0 | -02 15 14 | 6.25 | K1-IVa | ||||||||||
HR 1687 | BD-02 1165 | 33608 | 131852 | 2390 | 05 11 19.2 | -02 29 27 | 5.90 | F5V | |||||||||
HR 1690 | BD+00 974 | 33647 | 112505 | 3767 | V1085 Ori | 05 11 41.4 | +00 30 53 | 6.67 | B9Vn | 0.4 | 0.1 | D:Binary.,G:Ori OB1a assoc.,RV:Period 21.4d.,S:Hg, Mn star; late type close companion.,VAR:Amp. 0.003V, 0.565d. | |||||
HR 1691 | BD+00 975 | 33646 | 112509 | 3764 | 05 11 45.3 | +01 02 13 | 5.89 | G5III | 1.4 | 1.6 | S:Also classified A + G2:III. | ||||||
HR 1697 | BD-06 1109 | 33833 | 131873 | 05 12 48.2 | -06 03 26 | 5.91 | G7III | ||||||||||
HR 1698 | ρ | 17 | BD+02 888 | 33856 | 112528 | I | 3797 | 1872 | 05 13 17.5 | +02 51 40 | 4.46 | K0.5III | 3.9 | 6.9 | D:AB fixed. B, 8.4v, F7V at 7"; C, 11.8 at 182".,DYN:0.001".,S:Also classified K0.5III.,SB:ADS 3797A, 1031.40d, K 8.7k/s, V0 +40.5k/s, asini 123. Unresolved by speckle interferometry. | ||
HR 1701 | BD+01 938 | 33883 | 112535 | 3799 | 05 13 31.6 | +01 58 05 | 6.09 | A5V | 0.2 | 0.5 | D:AB 6.9 A4V, 7.1 A6V, 312y, a = 0.383". Combined mag., colors. C, 13v at 7", may be physical.,S:Component B variously classified G, F6III, A6V. | ||||||
HR 1703 | BD+00 988 | 33946 | 112543 | I | W | 1874 | 05 13 47.2 | +00 33 37 | 6.32 | M0V | |||||||
HR 1704 | BD-08 1059 | 33948 | 131887 | 05 13 33.3 | -08 08 52 | 6.37 | B5V | ||||||||||
HR 1709 | BD+04 877 | 34043 | 112556 | 2394 | I | 1880 | 05 14 44.1 | +05 09 22 | 5.50 | gK4 | |||||||
HR 1713 | β | 19 | BD-08 1063 | 34085 | 131907 | 194 | I | 3823 | 1882 | 05 14 32.3 | -08 12 06 | 0.12 | B8Ia: e | 6.5 | 9.5 | C:Color excess E(B-V) = +0.00.,D:AxBC, CPM. BC binary, 7.6 B8II, 7.6v sep. 0.12". D, 15.4v at 44". BC also classified B5V+B5V. For B, vsini =<39k/s.,DYN:0.004".,G:Ori OB1; in reflection nebula; member assoc. Tau-Ori R1 at 360 pc.,N:RIGEL; Algebar; Elgebar.,R:Diam. = 0.00243 - 0.00255".,S:Between wavelengths 10660 and 10915 no stellar lines except the chromospheric line He 10830. Weak magnetic field.,SB:ADS 3823B, 9.860d, K 25.0k/s, V0 +19.1, asini 3.37. May be due to pulsation.,VAR:0.03 - 0.30V, 25d. Amp. at 0.58 micrometers about 0.06m. | |
HR 1717 | BD-01 837 | 34180 | 131917 | 05 15 18.4 | -01 24 33 | 6.15 | F0IV | ||||||||||
HR 1718 | 18 | BD+11 756 | 34203 | 94426 | 2395 | 05 16 04.1 | +11 20 29 | 5.56 | A0V | ||||||||
HR 1724 | BD+01 957 | 34317 | 112588 | 05 16 41.1 | +01 56 50 | 6.42 | A0V e | G:Field of Ori OB1a but probably not member.,S:Possible H alpha emission. | |||||||||
HR 1735 | τ | 20 | BD-07 1028 | 34503 | 131952 | 195 | 3877 | 05 17 36.4 | -06 50 40 | 3.60 | B5III | 7.2 | 36.0 | ||||
HR 1746 | 21 | BD+02 916 | 34658 | 112624 | 1922 | 05 19 11.2 | +02 35 45 | 5.34 | F5II v | G:Ori OB1. | |||||||
HR 1748 | BD-01 859 | 34748 | 131983 | 05 19 35.2 | -01 24 44 | 6.34 | B1.5Vn | G:Ori OB1a. | |||||||||
HR 1759 | BD-05 1225 | 34880 | 132004 | 3926 | 05 20 26.4 | -05 22 00 | 6.39 | B8III | 4.7 | 4.4 | D:CPM.,S:Spectra show Mn. | ||||||
HR 1761 | BD+03 857 | 34959 | 112660 | 05 21 19.3 | +04 00 43 | 6.57 | B5Vp e | G:Ori OB1a.,S:Shell star. H alpha emission. Also classified B7IIIn. | |||||||||
HR 1763 | BD+08 933 | 34989 | 112667 | 2401 | 05 21 43.6 | +08 25 43 | 5.80 | B1V | G:Ori OB1; in reflection nebula; faint HII region. Teardrop shaped nebula in blue light has no counterpart in red. | ||||||||
HR 1764 | BD-00 929 | 35007 | 132024 | 3941 | 05 21 31.8 | -00 24 59 | 5.68 | B3V | 5.9 | 37.6 | D:Component B optical.,G:Ori OB1a; Orion belt. | ||||||
HR 1765 | 22 | BD-00 930 | 35039 | 132028 | 1147 | 05 21 45.7 | -00 22 57 | 4.73 | B2IV-V | G:Ori OB1a; Orion belt.,SB:293.0d, K 4.1k/s, V0 +27.9k/s, asini 16.33. | |||||||
HR 1770 | 23 | BD+03 871 | 35149 | 112697 | 3962 A | 05 22 50.0 | +03 32 40 | 5.00 | B1V | 2.2 | 31.9 | D:Fixed. Secondary 7.17V, -0.12(B-V), -0.63(U-B), B5Vn, B8nnp or B3V, RV -58k/s, vsini 350k/s, optical.,G:Ori OB1a.,RV:Rapidly rotating; may become Be star. | |||||
HR 1777 | BD+05 905 | 35242 | 112708 | 05 23 31.1 | +05 19 21 | 6.35 | A2V | G:Ori OB1. | |||||||||
HR 1778 | BD-08 1107 | 35281 | 132053 | 3978 | 05 23 18.5 | -08 24 57 | 5.90 | B8III | 1.7 | 6.0 | D:Companion A5IV, vsini 124k/s. | ||||||
HR 1781 | BD-00 936 | 35299 | 132057 | 05 23 42.3 | -00 09 35 | 5.70 | B1.5V | G:Ori OB1a; Orion belt. | |||||||||
HR 1782 | BD-01 882 | 35317 | 132060 | 3991 | 05 23 51.4 | -00 52 02 | 6.11 | F7V | 0.0 | 2.7 | D:BC 7.8 F8V, 7.9 F8V, 48.0y, a = 0.34". AxBC physical.,G:Ori OB1. | ||||||
HR 1784 | 29 | BD-07 1064 | 35369 | 132067 | I | 05 23 56.8 | -07 48 29 | 4.14 | G8IIIFe-0.5 | ||||||||
HR 1786 | BD+02 947 | 35407 | 112729 | 05 24 36.2 | +02 21 10 | 6.32 | B4IVn | G:Ori OB1a.,S:Shell star. | |||||||||
HR 1787 | 27 | BD-01 886 | 35410 | 132070 | I | 05 24 28.9 | -00 53 29 | 5.08 | G9III-IVFe-1 | ||||||||
HR 1788 | η | 28 | BD-02 1235 | 35411 | 132071 | 4002 | Eta Ori | 05 24 28.6 | -02 23 49 | 3.36 | B1V+B2e | 1.4 | 1.5 | D:ADS 4002A is SB triple system, abc with periods 9.2y and 7.989d. Speckle interferometry gives 9.219y, a = 0.036" for,D:for ab x c. Visual components AB, binary, 3.8, 4.8v, sep. 1.650"; C, 9.4v at 115". The total mass of the quintuple,D:system exceeds 50 solar masses, the most massive component being about 17 solar masses.,DYN:0.005".,G:Ori OB1a; Orion belt; cluster CR 70.,RV:Expanding circumstellar shell.,SB:ab, 7.9841d, K 145.2k/s, V0 +35.9k/s, asini 15.9. abc, 9.2y, K 17.5k/s, V0 +19.5k/s, asini 805. Resolved by,SB:speckle interferometry at 4-meter Mayall telescope, sep. 0.04"; vsini secondary 39k/s.,VAR:EA + Beta C 3.31 - 3.60V, 3.14 - 3.35B, 7.989268d. Also sinusoidal pulsation period, amp. 0.05V, 0.30197 or 0.30145d. | |||
HR 1789 | ψ1 | 25 | BD+01 1005 | 35439 | 112734 | 2406 | V1086 Ori | 05 24 44.8 | +01 50 47 | 4.95 | B1Vpe | G:Ori OB1a.,RV:Period 3-5y? Expanding circumstellar shell.,S:Shell star. Also classified B3ne, BeIII-IV.,VAR:Gamma Cas?, 4.92 - 4.96V, 14.50d? Amp. 0.07R, 0.06(R-I). | |||||
HR 1790 | γ | 24 | BD+06 919 | 35468 | 112740 | 201 | I | W | 1972 | 05 25 07.9 | +06 20 59 | 1.64 | B2III | 10.5 | 179.0 | G:Ori OB1.,N:BELLATRIX; the Amazon Star.,R:Diam. = 0.00070 - 0.00072".,RV:Expanding circumstellar shell. AEROBEE evidence for mass ejection up to 1600k/s. | |
HR 1799 | BD-10 1178 | 35536 | 150420 | I | 05 25 01.6 | -10 19 45 | 5.61 | K5III | |||||||||
HR 1800 | BD-00 945 | 35548 | 132086 | 4020 | 05 25 31.2 | -00 32 39 | 6.57 | B9pHgSi | 0.6 | 0.2 | D:359.1y, e 0.19, a 0.28", i 50.9d, mag. diff 0.3.,G:Ori OB1a; Orion belt.,S:Manganese star. Spectra also show Hg. | ||||||
HR 1803 | BD+00 1056 | 35588 | 112752 | 1975 | 05 25 47.0 | +00 31 15 | 6.16 | B2.5V | G:Ori OB1a.,SB:2.8884d, K 71.2k/s, V0 +16.8k/s, asini 2.81. | ||||||||
HR 1806 | BD-05 1247 | 35640 | 132100 | 05 26 02.4 | -05 31 06 | 6.23 | B9.5Vn | G:Ori OB1; sword of Orion. | |||||||||
HR 1807 | BD+06 923 | 35656 | 112767 | 05 26 38.8 | +06 52 09 | 6.42 | A0Vn | ||||||||||
HR 1809 | BD+15 822 | 35693 | 94556 | 05 27 13.8 | +15 15 28 | 6.16 | A1IV | ||||||||||
HR 1811 | ψ2 | 30 | BD+02 962 | 35715 | 112775 | 4039 | Psi Ori | 05 26 50.2 | +03 05 44 | 4.59 | B2IV | 5.6 | 2.7 | D:AB about 6300y. B, 10.3V, vsini 96k/s. C, 12.3v at 83", optical.,G:Ori OB1a.,SB:ADS 4039A, 2.5260d, K 142.8k/s, V0 +15.8k/s, msin3i 8.74, asini 4.95. Apsidal per. 44.8y.,VAR:Ell 4.55 - 4.61V, 4.31 - 4.34B, 2.52596d. | |||
HR 1819 | BD+13 903 | 35909 | 94580 | 05 28 34.8 | +13 40 44 | 6.35 | A4V | ||||||||||
HR 1820 | BD+01 1021 | 35912 | 112794 | 05 28 01.6 | +01 17 54 | 6.41 | B2V | G:Ori OB1a. | |||||||||
HR 1826 | BD-03 1115 | 36058 | 132157 | 4078 | 05 28 56.7 | -03 18 27 | 6.39 | A0Vn | 0.3 | 0.8 | G:Ori OB1c; Orion belt. | ||||||
HR 1830 | BD-03 1116 | 36134 | 132170 | 2022 | 05 29 23.6 | -03 26 47 | 5.79 | K1-III | |||||||||
HR 1832 | BD+15 837 | 36162 | 94596 | 05 30 26.1 | +15 21 37 | 5.94 | A3Vn | ||||||||||
HR 1833 | BD+01 1032 | 36166 | 112830 | 05 29 54.8 | +01 47 21 | 5.78 | B2V | G:Ori OB1a; Orion belt star. | |||||||||
HR 1834 | 31 | BD-01 913 | 36167 | 132176 | I | 4097 | CI Ori | 05 29 44.0 | -01 05 32 | 4.71 | K5III | 5.4 | 12.5 | D:CPM. Companion 9.70V, +0.71(B-V), +0.15(U-B), F7V.,VAR:ADS 4097, cst? 4.67: -4.71V. | |||
HR 1837 | BD+04 949 | 36217 | 112837 | CK Ori | 05 30 19.8 | +04 12 15 | 6.21 | K2IIIe v | VAR:SR? 5.9 - 7.1v, 120?d. | ||||||||
HR 1839 | 32 | BD+05 939 | 36267 | 112849 | 4115 | 05 30 47.1 | +05 56 53 | 4.20 | B5V | 1.3 | 0.9 | D:4.49 B5IV, 5.82 B7V, 586y, a = 1.293". Combined mag. and colors.,DYN:0.008".,G:Cas-Tau OB1; member of Pleiades group. Field of Ori OB1a but probably not member. | |||||
HR 1840 | BD-07 1099 | 36285 | 132192 | 05 30 20.7 | -07 26 05 | 6.33 | B2IV-V | G:Ori OB1c; sword of Orion. | |||||||||
HR 1842 | 33 | BD+03 948 | 36351 | 112861 | 4123 | 05 31 14.5 | +03 17 32 | 5.46 | B1IV+B1.5V | 1.0 | 1.9 | D:AB fixed. Combined mag., colors.,G:Ori OB1a. | |||||
HR 1848 | BD-06 1207 | 36430 | 132210 | 05 31 20.9 | -06 42 30 | 6.22 | B2V | G:Ori OB1c; sword of Orion. | |||||||||
HR 1851 | δ | 34 | BD-00 982 | 36485 | 132221 | 4134 C | 05 32 00.5 | -00 17 04 | 6.85 | B2V | 4.6 | 51.7 | C:IR source.,D:Binary with HR 1852, q.v.,G:Ori OB1b3; Orion belt. | ||||
HR 1852 | δ | 34 | BD-00 983 | 36486 | 132220 | 206 | I | 4134 A | Del Ori | 05 32 00.4 | -00 17 57 | 2.23 | O9.5II | 4.6 | 51.7 | C:Color excess E(B-V) = +0.07.,D:Binary with C = HR 1851. Component B, 14.0v at 33".,G:Ori OB1b3; Orion belt; cluster CR 70.,N:MINTAKA; Mintika.,RV:Mass ejection at up to 1800k/s.,S:Nitrogen deficient. Interstellar Lyman alpha absorption observed by AEROBEE rocket. Also classified B2V, O9.5II,,S:O9.5II-III + B0III.,SB:ADS 4134A, 5.7324d, K 101.0k/s, V0 +20.1k/s, asini 7.92. The first SB in which stationary lines were observed.,VAR:ADS 4134A, EA 2.14 - 2.26V, 1.94 - 2.13B, 5.732476d. Intrinsic variability also possible. | |
HR 1855 | υ | 36 | BD-07 1106 | 36512 | 132222 | 05 31 55.8 | -07 18 05 | 4.62 | B0V | G:Ori OB1c; sword of Orion.,N:Thabit; Tabit. See HR 1543.,RV:Expanding circumstellar shell. | |||||||
HR 1861 | BD-01 935 | 36591 | 132234 | 4141 | 2107 | 05 32 41.3 | -01 35 31 | 5.35 | B1IV | 4.5 | 2.0 | D:CPM.,G:Ori OB1b2; Orion belt; HII region.,VAR:Amp. 0.10y. | |||||
HR 1863 | BD-01 939 | 36646 | 132247 | 4150 | 2131 | 05 33 07.2 | -01 43 06 | 6.46 | B4Vn | 1.8 | 1.5 | D:All components CPM? CD binary, 8.9v A0V, 9.7v sep. 0.8" at 30" from A, physical.,G:Ori OB1b2; Orion belt. | |||||
HR 1864 | 35 | BD+14 947 | 36653 | 94652 | 2414 | 05 33 54.3 | +14 18 20 | 5.64 | B3V | ||||||||
HR 1868 | BD-01 943 | 36695 | 132255 | VV Ori | 05 33 31.4 | -01 09 22 | 5.34 | B1V | G:Ori OB1b2; Orion belt.,SB:AB, 1.4854d, K 128.6k/s, V0 +22.1k/s, msin3i 7.56, asini 2.63; ABC, 119.088d, K 13.5k/s, V0 +3.3k/s, asini,SB:21.2. Spectra (A)B1V, (B)B5-B9V, (C)A7V. Masses 7.6, 3.42, 1.5 solar, respectively.,VAR:EA 5.31 - 5.66V, 5.14 - 5.51p, B1V + B7V, 1.4853784d, i 80.9d. A third component has orbital period 119.09d. | ||||||||
HR 1871 | BD+01 1058 | 36741 | 112901 | 05 33 57.6 | +01 24 28 | 6.59 | B2V | G:Ori OB1a; Orion belt star. | |||||||||
HR 1872 | 38 | BD+03 964 | 36777 | 112904 | W | 05 34 16.7 | +03 46 01 | 5.36 | A2V | 0.4 | D:Suspected visual double probably single. Unresolved by speckle interferometry.,G:UMa stream; Ori OB1. | ||||||
HR 1873 | BD-01 949 | 36779 | 132269 | 4159 | 05 34 03.9 | -01 02 08 | 6.22 | B2.5V | 4.8 | 27.5 | C:Abnormal reddening at 1500A.,D:Companion has K-type spectrum.,G:Ori OB1b2; Orion belt. | ||||||
HR 1874 | BD-01 950 | 36780 | 132270 | I | 05 34 04.0 | -01 28 14 | 5.93 | K5III | |||||||||
HR 1876 | φ1 | 37 | BD+09 877 | 36822 | 112914 | 208 | S | 05 34 49.2 | +09 29 22 | 4.41 | B0III | G:Ori OB1; exciting star of HII region S264; Lambda Ori assoc.,SB:8.4y, K 13.3k/s, V0 +33.2k/s, asini 547. Unresolved by speckle interferometry. | |||||
HR 1879 | λ | 39 | BD+09 879 | 36861 | 112921 | I | 4179 A | 2240 | 05 35 08.3 | +09 56 03 | 3.54 | O8III((f)) | 2.0 | 4.4 | C:Color excess E(B-V) = +0.12.,D:A,B,C fixed. B is HR 1880. Colors for combined light. Blended mag., 3.39V. C is 11.2v at 29", optical; D, 11.2,D:at 78".,DYN:0.001".,G:In cluster Collinder 69; exciting star of HII region S264; in Lambda Ori assoc. Lambda Ori and surroundings are at,G:same distance as Ori OB1 assoc. but are not members. Lambda Ori member surrounded by expanding HII region.,N:Meissa; Heka.,VAR:Uncertain which of HR 1879 or 1880 is the variable suspect. | ||
HR 1880 | λ | 39 | BD+09 879 | 36862 | 0 | 4179 B | 2240 | 05 35 08.5 | +09 56 06 | 5.61 | B0.5V | 2.0 | 4.4 | D:See HR 1879.,DYN:0.001".,G:See HR 1879. | |||
HR 1883 | BD+10 818 | 36881 | 94671 | 4181 | 2251 | 05 35 13.4 | +10 14 24 | 5.60 | B9IIIpHg:Mn: | 4.2 | 2.9 | D:CPM.,G:In HII region; Lambda Ori assoc. | |||||
HR 1886 | BD-06 1233 | 36959 | 132298 | 4182 B | 2261 | 05 35 00.9 | -06 00 33 | 5.67 | B1V v | 0.9 | 36.2 | D:Fixed with HR 1887.,G:Iota Ori cluster; Ori OB1c4; sword of Orion. | |||||
HR 1887 | BD-06 1234 | 36960 | 132301 | 4182 A | 05 35 02.7 | -06 00 07 | 4.78 | B0.5V | 0.9 | 36.2 | D:Fixed with HR 1886.,G:Iota Ori cluster; Ori OB1c4; sword of Orion. | ||||||
HR 1890 | BD-04 1183 | 37017 | 132317 | V1046 Ori | 05 35 21.8 | -04 29 36 | 6.56 | B1.5V | G:Ori OB1c1; Orion northern sword.,S:He strong.,SB:18.65d, K 30k/s, V0 +32k/s, asini 7.34. The 18.65 or 9.3d periods may be spurious, with 0.9015d as the true period.,SB:Rotation vsini 150k/s.,VAR:E:+SX Ari 6.54 - 6.58V, 0.94629d superimposed on SX Ari type, 0.9015d. | ||||||||
HR 1891 | BD-04 1184 | 37016 | 132319 | W | 05 35 22.5 | -04 25 31 | 6.24 | B2.5V | 0.7 | 0.2 | G:Ori OB1c1; Orion northern sword. | ||||||
HR 1892 | 42 | BD-04 1185 | 37018 | 132320 | I | 4187 | 2318 | 05 35 23.2 | -04 50 18 | 4.59 | B1V | 3.2 | 1.5 | C:Color excess E(B-V) = +0.05.,D:Binary. COPERNICUS spectra and IR photometry yielded no evidence on the companion.,DYN:0.009".,G:In HII region; Ori OB1c2; sword of Orion. No emission from the nebula. | |||
HR 1893 | θ1 | 41 | BD-05 1315 | 37020 | 0 | 4186 A | V1016 Ori | 05 35 15.9 | -05 23 14 | 6.73 | B0.5V | 0.1 | 117.0 | C:Abnormal reddening at 1500A. IR source.,D:ADS 4186AC fixed at 13". C = HR 1895. ADS 4186 and 4188 together appear to form one complex multiple system whose,D:brightest components are ADS 4186C = HR 1895 and ADS 4188A = HR 1897. These two components are double star STF 17 which,D:IDS lists as part of ADS 4188. Thus, the 9 components of ADS 4186 and the 4 of ADS 4188 form one system of at least 12,D:components. Those of ADS 4186 range from mag. 5.4 to 16.7v, all within 22" of A. ADS 4188 has two other,D:companions in addition to HR 1895: B, 6.5v at 53" and C, 7.6v at 129" from HR 1897.,G:Ori OB1d; sword of Orion; a trapezium star.,S:Also classified B0.5Vp.,SB:65.43233d, K 33.3k/s, V0 +13.3k/s.,VAR:ADS 4186A, EA, 6.72 - 6.75V, 65.43233d. Component E is NSV 2291, amp. 0.41V; component F is NSV 2296, 11.0V; component,VAR:H is NSV 2292, 15.6V. | |||
HR 1894 | θ1 | 41 | BD-05 1315 | 37021 | 0 | 4186 B | BM Ori | 05 35 16.1 | -05 23 07 | 7.96 | B0V | 0.1 | 117.0 | C:Abnormal reddening at 1500A.,D:Fixed with HR 1895 at 17". See HR 1893.,G:Ori OB1d; sword of Orion; a trapezium star.,S:Also classified B1-3V+A7IV.,SB:6.4705d, K1 52.8k/s, K2 171k/s, V1 +20.7k/s, V2 +23.6k/s, m1sin3i 5.75, m2sin3i 1.78,,SB:a1sini 4.70, a2sini 15.2.,VAR:ADS 4186B, EA 7.95 - 8.52V, 6.470525d, i 87.7d. | |||
HR 1895 | θ1 | 41 | BD-05 1315 | 37022 | 132314 | I | 4186 C | 2294 | 05 35 16.5 | -05 23 23 | 5.13 | O6p v | 0.1 | 117.0 | C:Abnormal reddening at 1500A. Color excess E(B-V) = +0.32. Morel and Magenat indicate R-I from -0.13 to 0.00 in,C:disagreement with other Johnson sources.,D:See HR 1893. Fixed with HR 1896 at 13".,G:Ori OB1d; sword of Orion; a trapezium star. Orion Neb, NGC 1976, HII reg.,M:No clear evidence for being X-ray source. Temp. 32000d excites nebulosity to 10600d.,S:Interstellar Lyman alpha absorption observed by AEROBEE rocket. Also classified O6ep, O7Vp, O6.5III.,SB:Inverse P Cyg profile suggests infalling material rather than SB.,VAR:5.10 - 5.16V. He II 4686 suggests var. density of infalling material on time scale of days. | ||
HR 1896 | θ1 | 41 | BD-05 1315 | 37023 | 0 | 4186 D | 2295 | 05 35 17.3 | -05 23 16 | 6.70 | B0.5Vp | 0.1 | 117.0 | C:Abnormal reddening at 1500A.,D:See HR 1893, 1895.,G:Ori OB1d; sword of Orion; a trapezium star.,VAR:6.65 - 6.72V. | |||
HR 1897 | θ2 | 43 | BD-05 1319 | 37041 | 132321 | I | 4188 A | 2320 | 05 35 22.9 | -05 24 58 | 5.08 | O9.5Vp e | 0.1 | 117.0 | C:Abnormal reddening at 1500A.,D:ADS 4188AB fixed at 52". B is 6.38V, -0.05(B-V), -0.93(U-B), B0.5V; vsini 17k/s. See HR 1893.,G:Ori OB1d; sword of Orion; M42; HII region.,M:May be X-ray source 3U0527-05.,S:Emission is nebular, to red of H beta.,SB:ADS 4188A, 20.96722d, K 90.5k/s, V0 +32.1k/s, asini 25.6. Primary 20 solar masses, secondary over 14 solar.,SB:Possibly the counterpart of X-ray binary 3U0527-05 with perhaps collapsed components.,VAR:5.05 - 5.19V. Component B is NSV 2326, 6.38 - 6.44V. | ||
HR 1898 | BD-04 1186 | 37040 | 132325 | 4192 | 05 35 31.1 | -04 21 53 | 6.38 | B2.5IV | 2.0 | 4.2 | D:CPM.,G:Ori OB1c1; Orion northern sword. | ||||||
HR 1899 | ι | 44 | BD-06 1241 | 37043 | 132323 | 209 | I | 4193 | 2334 | 05 35 26.0 | -05 54 36 | 2.77 | O9III e | 4.5 | 11.4 | C:Color excess E(B-V) = +0.07.,D:AB fixed. B is B7IV; vsini 50k/s.,DYN:0.005".,G:Iota Ori cluster; Ori OB1c4; sword of Orion; HII region.,N:Nair al Saif; Hatysa in Becvar.,RV:ADS 4193A, mass ejection vel. up to 1600k/s. ADS 4193B, +16k/s.,S:Enhanced ultraviolet emission. Helium weak. Interstellar Lyman alpha absorption observed by AEROBEE rocket.,S:Iota Ori B is a helium weak star. Helium deficient by factor of 10 relative to standard stars. P and Ga enormously,S:enhanced. uv 1240 absorption strong; weak 1548.,SB:ADS 4193A, 29.1351d, K 115.2k/s, V0 +26.6k/s, msin3i 15.7, asini 30.0.,VAR:Component B is NSV 2334, 7.4V. | |
HR 1900 | BD-03 1146 | 37055 | 132332 | W | 2350 | 05 35 35.8 | -03 15 10 | 6.40 | B3IV | 6.2 | 1.1 | G:Ori OB1c; between belt and sword of Orion. | |||||
HR 1901 | 45 | BD-04 1188 | 37077 | 132336 | 4196 | 05 35 39.5 | -04 51 21 | 5.26 | F0III | 9.0 | 19.1 | G:Ori OB1c2. | |||||
HR 1903 | ε | 46 | BD-01 969 | 37128 | 132346 | 210 | I | W | Eps Ori | 05 36 12.8 | -01 12 07 | 1.70 | B0Ia e | 8.7 | 179.9 | C:In both infrared survey and UV CELESCOPE. Color excess E(B-V) = +0.08.,G:Ori OB1b2; Orion belt; cluster NGC 1980; nebulosity.,N:ALNILAM; Alnihan; Alnitam.,R:Diam. = 0.00067 - 0.00069".,RV:UV AEROBEE spectra indicate mass ejection at velocity up to 1800k/s.,S:Nitrogen deficient. Interstellar Lyman alpha absorption observed by AEROBEE rocket. Walborn declares "no e", but,S:Merrill found H alpha emission.,VAR:Alpha Cyg 1.64 - 1.74V. | |
HR 1906 | BD-05 1334 | 37150 | 132351 | 2416 | 05 36 15.0 | -05 38 53 | 6.54 | B3V v | G:Ori OB1d1; sword of Orion. | ||||||||
HR 1907 | φ2 | 40 | BD+09 898 | 37160 | 112958 | I | 05 36 54.3 | +09 17 26 | 4.09 | K0IIIbFe-2 | G:Sigma Pup group. | ||||||
HR 1908 | BD+10 828 | 37171 | 94702 | 2420 | I | 05 37 04.4 | +11 02 06 | 5.94 | K4III | ||||||||
HR 1911 | BD-06 1255 | 37209 | 132359 | 4212 | 2433 | 05 36 35.7 | -06 03 54 | 5.72 | B1V | 3.2 | 5.2 | D:CPM. Combined mag., colors.,G:Ori OB1c; sword of Orion.,RV:ADS 4212B, +25.3k/s. | |||||
HR 1913 | BD+08 1016 | 37232 | 112966 | 05 37 19.3 | +08 57 07 | 6.12 | B2IV-V | G:Ori OB1. | |||||||||
HR 1918 | BD-06 1262 | 37303 | 132375 | 2467 | 05 37 27.4 | -05 56 18 | 6.05 | B1V v | G:Member of the local association (Pleiades group); Ori OB1c; sword of Orion. | ||||||||
HR 1920 | BD+07 953 | 37320 | 112979 | 05 38 01.1 | +07 32 29 | 5.88 | B8III | ||||||||||
HR 1923 | BD-04 1196 | 37356 | 132387 | 2483 | 05 37 53.4 | -04 48 49 | 6.19 | B2IV-V | G:Ori OB1c; sword of Orion. | ||||||||
HR 1931 | σ | 48 | BD-02 1326 | 37468 | 132406 | 4241 AB | 05 38 44.8 | -02 36 00 | 3.81 | O9.5V | 0.8 | 0.2 | D:AB 4.1 O9.5V, 5.1 B0.5V, 170y, a = 0.247". Combined mag. and colors. C, 8.79V, A2V at 11" may be physical; D, 6.62V,,D:-0.20(B-V), B2V, at 13" and E = HR 1932, at 42" CPM with A. A multiple system similar to trapezium. ADS 4241 possibly,D:the most massive visual binary known, 35 solar masses.,DYN:0.003".,G:Ori OB1b1; Orion belt; HII reg.; IC 434; a trapezium system.,S:Hydrogen deficient. Interstellar Lyman alpha absorption observed by AEROBEE rocket. | ||||
HR 1932 | BD-02 1327 | 37479 | 132408 | 4241 E | V1030 Ori | 05 38 47.1 | -02 35 39 | 6.65 | B2Vp v | 0.8 | 0.2 | D:See HR 1931. Speculation that component E may be captured star older than the other components.,G:Ori OB1b1.,S:Strong HeI lines. Prototype He-rich star.,VAR:SX Ari 6.61 - 6.77V, 1.19080d, amp. 0.10y. H alpha emission profiles same period, possibly also 6d. Variable shell,VAR:spectrum. Magnetic variable. | |||||
HR 1933 | BD-06 1275 | 37481 | 132405 | 05 38 37.8 | -06 34 26 | 5.96 | B1.5IV | G:Ori OB1c; sword of Orion. | |||||||||
HR 1934 | ω | 47 | BD+04 1002 | 37490 | 113001 | 2423 | Ome Ori | 05 39 11.1 | +04 07 17 | 4.57 | B3IIIe v | G:Ori OB1a; in reflection nebula; member assoc. Tau-Ori R1 at 360 pc.,RV:vsini 160k/s also reported.,VAR:Gamma Cas 4.40 - 4.59V. Var. hydrogen emission. | |||||
HR 1937 | 49 | BD-07 1142 | 37507 | 132411 | 05 38 53.1 | -07 12 47 | 4.80 | A4V | SB:445.74d, K 28.6k/s, V0 -1.5k/s, asini 146. Massive invisible component. | ||||||||
HR 1940 | BD-03 1166 | 37594 | 132424 | 05 39 31.2 | -03 33 53 | 6.00 | A8V s | ||||||||||
HR 1942 | BD-09 1197 | 37635 | 132425 | 05 39 30.8 | -09 42 24 | 6.50 | B7V | G:Ori OB1 assoc.,S:Weak 4481 MgII line. | |||||||||
HR 1948 | ζ | 50 | BD-02 1338 | 37742 | 132444 | I | 4263 A | 2553 | 05 40 45.5 | -01 56 34 | 2.05 H | O9.7Ib e | 2.2 | 2.4 | C:Color excess E(B-V) = +0.09.,D:AB 1.88 O9.5Ib, 4.02 B2III, 1508.6y, a = 2.728". Colors for combined light. Blended magnitude 1.76V, 18 and 6 solar,D:masses. B is HR 1949. C is 9v at 58", possibly physical.,DYN:0.004".,G:Ori OB1b1; Orion belt; exciting star of HII region S277; HII region; IC 434.,M:In line of sight of high-velocity interstellar cloud.,N:ALNITAK; Alnitah.,R:Diam. = 0.00047 - 0.00048".,RV:Mass ejection up to 1800k/s.,S:Nitrogen deficient. Interstellar Lyman alpha absorption observed by AEROBEE rocket. Also classified O9.5Ib and,S:O9.5Iab.,VAR:ADS 4263. Uncertain which component, HR 1948 or 1949, is the variable suspect. | ||
HR 1949 | ζ | 50 | BD-02 1338 | 37743 | 0 | I | 4263 B | 2553 | 05 40 45.6 | -01 56 34 | 4.21 H | B0III | 2.2 | 2.4 | D:See HR 1948.,DYN:0.004".,G:Ori OB1; Orion belt; HII region; IC 434.,M:In line of sight of high-velocity interstellar cloud.,S:Interstellar Lyman alpha absorption observed by AEROBEE rocket. | ||
HR 1950 | BD-02 1337 | 37744 | 132441 | 05 40 37.3 | -02 49 30 | 6.22 | B1.5V | G:Ori OB1b1. | |||||||||
HR 1952 | BD-01 1004 | 37756 | 132445 | 2556 | 05 40 50.6 | -01 07 44 | 4.95 | B2IV-V | G:Ori OB1b1; Orion belt.,SB:27.1546d, K 88.5k/s, V0 +36.2k/s, msin3i 6.36, asini 22.6.,VAR:E?, 4.91 - 4.95V. | ||||||||
HR 1955 | BD+00 1152 | 37788 | 113033 | 05 41 05.6 | +00 20 16 | 5.93 | F0IV | G:Ori OB1. | |||||||||
HR 1957 | BD-10 1258 | 37808 | 150680 | V1051 Ori | 05 40 46.0 | -10 24 34 | 6.52 | B9.5IIIpSi4200 | VAR:Alpha CV, amp. 0.03V, 0.04U, 1.099d. | ||||||||
HR 1959 | BD-02 1346 | 37904 | 132465 | 4279 | 05 41 40.3 | -02 53 46 | 6.42 | A9IV-V | 0.9 | 0.1 | D:CPM.,G:Ori OB1b1. | ||||||
HR 1963 | 51 | BD+01 1105 | 37984 | 113056 | 2427 | I | 05 42 28.6 | +01 28 29 | 4.91 | K1III | G:Ori OB1. | ||||||
HR 1967 | BD-06 1293 | 38089 | 132477 | 4299 | 05 42 53.8 | -06 47 46 | 6.02 | F3V | 0.4 | 0.2 | D:AB 6.5 F5V, 6.9 F6V, 20.10y, a = 0.201". | ||||||
HR 1970 | BD-01 1012 | 38099 | 132480 | I | V1197 Ori | 05 43 09.3 | -01 36 47 | 6.31 | K4III | SB:143.04d, K 9.1k/s, V0 +32.1k/s, asini 17.9. | |||||||
HR 1978 | BD+03 1025 | 38309 | 113099 | 4333 | 05 45 01.9 | +04 00 29 | 6.09 | gF0n | 4.2 | 15.7 | D:BC, 9.5, 13.0v, sep. 1.3" at 17" from A, optical.,G:Ori OB1. | ||||||
HR 1986 | BD-04 1235 | 38495 | 132515 | 4361 | 05 46 02.8 | -04 16 06 | 6.34 | K1III+G0IV | 2.7 | 6.9 | D:CPM. Companion 8.97V, +0.55(B-V), +0.08(U-B), G0IV. | ||||||
HR 1987 | BD+09 954 | 38527 | 113124 | 2432 | 4369 | 05 46 52.1 | +09 31 20 | 5.79 | G8III | 5.9 | 17.2 | D:Optical. | |||||
HR 1988 | BD+01 1126 | 38529 | 113119 | 05 46 35.0 | +01 10 05 | 5.95 | G4V | G:Ori OB1. | |||||||||
HR 1999 | 52 | BD+06 1027 | 38710 | 113150 | 4390 | 05 48 00.2 | +06 27 15 | 5.27 | A5V | 0.1 | 1.4 | D:Binary. Companion F0.,DYN:0.005".,SB:vsini of secondary 70k/s. | |||||
HR 2001 | BD-10 1281 | 38735 | 150814 | S | V1031 Ori | 05 47 26.7 | -10 31 59 | 6.03 | A4V | SB:Spectroscopic triple system with nearly equal components.,VAR:EA 6.02 - 6.43V, 6.1 - 6.5p. 3.4057d. Redder at min. | |||||||
HR 2004 | κ | 53 | BD-09 1235 | 38771 | 132542 | 220 | I | 2641 | 05 47 45.4 | -09 40 11 | 2.06 | B0.5Ia v | C:Color excess E(B-V) = +0.07.,G:Ori OB1.,N:SAIPH.,R:Diam. 0.00044 - 0.00045".,S:Deficient in ultraviolet relative to most early-type supergiants shortward of 2800A. | ||||
HR 2007 | BD-04 1244 | 38858 | 132554 | 1155 | 05 48 34.9 | -04 05 41 | 5.97 | G4V | |||||||||
HR 2014 | BD+09 978 | 39007 | 113179 | 05 50 02.6 | +09 52 16 | 5.80 | G8III | G:Probable Hyades group. | |||||||||
HR 2019 | BD+04 1052 | 39051 | 113186 | 2439 | I | 05 50 13.1 | +04 25 24 | 5.97 | gK2 | ||||||||
HR 2024 | BD+01 1148 | 39118 | 113198 | Var | 05 50 30.0 | +02 01 28 | 5.98 | G8III+A0IV | S:vsini of secondary 85k/s.,SB:209.20d, K 19.2k/s, V0 +15.3k/s, asini 50.1.,VAR:Amp. 0.082. | ||||||||
HR 2030 | BD+19 1110 | 39286 | 94942 | 05 52 23.4 | +19 52 05 | 6.06 | G2IIIe+B8III | S:vsini of secondary =<50k/s. Luminosity also classified V. | |||||||||
HR 2031 | 55 | BD-07 1187 | 39291 | 132591 | 2442 | 2677 | 05 51 22.0 | -07 31 05 | 5.35 | B2IV-V | G:Ori OB1c. | ||||||
HR 2037 | 56 | BD+01 1151 | 39400 | 113220 | 2444 | I | 4467 | 2690 | 05 52 26.4 | +01 51 18 | 4.78 | K1.5IIb | 8.4 | 43.4 | |||
HR 2038 | BD+20 1156 | 39417 | 77680 | 05 53 19.1 | +20 17 57 | 6.71 | B9V | ||||||||||
HR 2039 | BD-09 1255 | 39421 | 132603 | 05 52 07.6 | -09 02 29 | 5.97 | A2Vnp | S:Lambda Boo star, Mg 4481 wk. | |||||||||
HR 2047 | χ1 | 54 | BD+20 1162 | 39587 | 77705 | I | D | 05 54 22.9 | +20 16 34 | 4.41 | G0V | 0.6 | D:Possibly triple system. Magnitudes of separate components unknown.,D:A*, 14.25y, a = 0.095". Probably low-mass companion.,G:In UMa cluster; Sirius group? UMa stream.,R:Occultation diam. = 0.0016". | ||||
HR 2048 | BD+10 927 | 39632 | 94977 | I | 05 54 13.4 | +10 35 13 | 6.12 | G9II | |||||||||
HR 2050 | BD+11 964 | 39662 | 94979 | W | 05 54 32.2 | +11 45 45 | 6.59 | A2V | 5.5 | 22.7 | D:Optical. | ||||||
HR 2051 | BD+03 1071 | 39685 | 113253 | 05 54 15.7 | +03 13 31 | 6.31 | K0 | ||||||||||
HR 2052 | 57 | BD+19 1126 | 39698 | 94986 | 2447 | 2722 | 05 54 56.7 | +19 44 59 | 5.92 | B2V | 2.2 | 0.0 | G:Cas-Tau OB1.,SB:6.1, 8.3v, sep. 0.0006", 7.9969d, K 70k/s, V0 +21k/s, msin3i 8.84, asini 7.70.,VAR:Beta C?, amp. <0.02V. | ||||
HR 2057 | BD+00 1208 | 39775 | 113265 | I | 05 54 44.1 | +00 58 06 | 6.00 | K0III | |||||||||
HR 2058 | BD-04 1281 | 39777 | 132635 | 05 54 34.7 | -04 03 50 | 6.57 | B1.5V | G:Ori OB1c. | |||||||||
HR 2061 | α | 58 | BD+07 1055 | 39801 | 113271 | 224 | I | 4506 | Alp Ori | 05 55 10.3 | +07 24 25 | 0.50 | M1-2Ia-Iab e | 9.9 | 174.4 | D:Components B-E all 11 to 14.5v at sep. 40" to 174" from A. D 13.5 at 77", optical. Speckle interferometric observations,D:in 1983 November (Karovska et al. 1986, ApJ, 308, 360) show A to be a triple system with closer companion at 0.06",D:(mag. diff. 3.4 at H alpha) and more distant companion at 0.51" (mag. diff. 4.6 at H alpha).,M:Radio star. Circumstellar shell of gas and dust. The gas shell detached from photosphere at about 5 stellar radii. Diam,M:of optically thin dust shell possibly 1".5. Surrounded by reflection nebula. Gas shell up to 100 R, dust shell from 12,M:to 250 R. Highly limb darkened.,N:BETELGEUSE; Betelguex; Betelgeuze; Beteiguex; Al Mankib.,R:The first star whose diameter was measured with the interferometer, .047", by Michelson and Pease at Mt. Wilson in 1920.,RV:Expanding circumstellar shell, extending at least 29" or about 600 stellar radii. If rate constant, initial potassium,RV:ejection about 2700 years ago. 2.85-cm radio emission indicates mass loss.,S:Ultraviolet FeII emission. 5-micron observations indicate carbon monoxide. STRATOSCOPE II observations indicate infrared,S:H2O bands. UV observations from OAO-2 indicate C and O underabundant. MgII emissions indicate a cooler shell,S:surrounding the supergiant.,SB:ADS 4506A, 5.781y, K 3.08k/s, V0 +20.33k/s, asini 81.773.,VAR:ADS 4506A, SRc 0.40 - 1.3V, 2335d. Also superimposed waves 200-400d. | |
HR 2063 | BD+20 1171a | 39816 | 77730 | I | U Ori | 05 55 49.3 | +20 10 30 | 5.40 | M6.5IIIe | P:Polarization possibly due to circumstellar dust scattering.,R:Occultation diam. = 0.0143 - 0.01545".,S:Infrared star. OH and water emission. SiO maser source. OH emission strong in infrared. Also H2O microwave,S:emission. IR spectra show water vapor. Strong water bands at light minimum.,VAR:M 4.8 - 12.6v, 368.3d. Period has varied between 367.9 and 376.0d. Colors correspond to 6.72V. | |||||||
HR 2067 | BD+13 1036 | 39881 | 95004 | 4519 | 05 56 03.5 | +13 55 31 | 6.60 | G5IV | 1.9 | 47.5 | D:All companions optical. | ||||||
HR 2070 | BD-04 1289 | 39910 | 132652 | 05 55 30.3 | -04 36 59 | 5.87 | gK2 | ||||||||||
HR 2071 | BD-04 1291 | 39927 | 132653 | 05 55 35.4 | -04 47 18 | 6.28 | A2III | ||||||||||
HR 2075 | BD+09 1016 | 39985 | 113284 | 05 56 28.0 | +09 30 35 | 5.99 | A0IV | ||||||||||
HR 2076 | BD+11 975 | 40020 | 95027 | 2453 | 05 56 49.5 | +11 31 16 | 5.87 | K2III | |||||||||
HR 2093 | BD+01 1168 | 40282 | 113306 | I | 05 57 54.2 | +01 13 28 | 6.22 | M0III | |||||||||
HR 2097 | BD-01 1078 | 40347 | 132700 | 05 58 11.7 | -00 59 39 | 6.22 | K0 | ||||||||||
HR 2099 | BD+12 968 | 40369 | 95075 | 4562 | 05 58 53.2 | +12 48 31 | 5.70 | K2III+A5V | 1.0 | 0.4 | D:126.0y, e 0.56, a 0.265", i 75.4d, mag. diff 1.4.,S:Also classified K0III + A7V. | ||||||
HR 2100 | 59 | BD+01 1171 | 40372 | 113315 | 4555 | V1004 Ori | 05 58 24.4 | +01 50 13 | 5.90 | A5mDel Del | 4.7 | 36.7 | SB:2.7405d, K 55.6k/s, V0 +45.3k/s, asini 2.09.,VAR:Delta Sct 5.88 - 5.92V, 0.0611d. | ||||
HR 2103 | 60 | BD+00 1239 | 40446 | 113321 | 1161 | W | 05 58 49.6 | +00 33 11 | 5.22 | A1V s | 6.6 | 19.1 | |||||
HR 2109 | BD-01 1083 | 40574 | 132723 | 05 59 37.7 | -01 26 40 | 6.63 | B8IIIn | ||||||||||
HR 2113 | BD-03 1256 | 40657 | 132732 | 2457 | I | 2770 | 06 00 03.4 | -03 04 27 | 4.53 | K1.5IIIFe-1.5 | |||||||
HR 2124 | μ | 61 | BD+09 1064 | 40932 | 113389 | 4617 | 2792 | 06 02 23.0 | +09 38 51 | 4.12 | A2V | 1.8 | 0.3 | D:AB 4.4 A2V, 6.0 F3V, 17.5d, a = 0.276"; ABxP, 18.25y, a = 0.089". Magnitude and colors for combined light. A is alpha,D:CVn var., SB1, 4.45d; B is SB2, 4.78d. Component C, 14v at 18" probably optical.,DYN:0.023".,G:Mel 25; the Hyades.,S:K/m indicate A3/A7, respectively.,SB:ADS 4617A, 4.4476d, K 28.4k/s, V0 var., asini 1.74. Alternate orbit 4.4478d, K 29.2k/s, V0 +40.9k/s,,SB:asini 1.79. Speckle interferometric sep. 0.153" 1980.94; unresolved 1983.94. ADS 4617AB, 18y, K 14.9k/s,,SB:V0 +43.3k/s, asini 851. ADS 4617B is SB2, 4.78d.,VAR:ADS 4617A, Alpha CV 4.10 - 4.18V. | |||
HR 2127 | BD+01 1195 | 40964 | 113392 | 06 02 17.1 | +01 41 40 | 6.59 | B8V | ||||||||||
HR 2130 | 64 | BD+19 1186 | 41040 | 95166 | D | 2803 | 06 03 27.3 | +19 41 26 | 5.14 | B8III | 0.0 | 0.0 | D:Triple system, SB, sep. 0.0014". Third component found by occulation, 6.5v at 0.060".,S:Luminosity also given as V.,SB:14.57d. | ||||
HR 2133 | BD+11 1009 | 41076 | 95170 | 06 03 24.7 | +11 40 51 | 6.08 | A0V s | ||||||||||
HR 2135 | χ2 | 62 | BD+20 1233 | 41117 | 77911 | D | 2809 | 06 03 55.2 | +20 08 18 | 4.63 | B2Ia t | 0.0 | 0.0 | D:Occultation binary, sep. 0.02".,G:Gem OB1.,S:Emission lines possibly variable.,VAR:H alpha profile var. | |||
HR 2144 | 63 | BD+05 1085 | 41361 | 113429 | 06 04 58.2 | +05 25 12 | 5.67 | gG7 | |||||||||
HR 2145 | 66 | BD+04 1116 | 41380 | 113430 | 230 | 06 04 58.4 | +04 09 31 | 5.63 | G4III | ||||||||
HR 2159 | ν | 67 | BD+14 1152 | 41753 | 95259 | 232 | 06 07 34.3 | +14 46 06 | 4.42 | B3V | G:Cas-Tau OB1; member of Pleiades group.,SB:131.211d, K 33.3k/s, V0 +24.1k/s, asini 46.2. | ||||||
HR 2167 | BD+08 1202 | 42035 | 113503 | 06 08 47.2 | +08 40 12 | 6.55 | B9V | ||||||||||
HR 2174 | BD+02 1139 | 42111 | 113507 | 4749 | 06 08 57.9 | +02 29 58 | 5.73 | A3Vn v | 1.2 | 29.3 | D:AB CPM. B is 6.94V, +0.04(B-V), -0.02(U-B), A0V, vsini 120k/s. Component C, 8.9v at 118". HD erroneously assigned the,D:preceding number, HD 42092, to the fainter following component of ADS 4749. Consequently the data for the two primary,D:components are sometimes interchanged. vsini for component A is 250k/s.,VAR:ADS 4749A, spectrum variable. Sometimes shows shell features. | ||||||
HR 2184 | BD+18 1112 | 42351 | 95337 | 06 11 01.8 | +18 07 46 | 6.33 | K1II | ||||||||||
HR 2191 | BD+13 1151 | 42477 | 95352 | 06 11 27.9 | +13 38 19 | 6.04 | A0Vnn | ||||||||||
HR 2193 | 68 | BD+19 1253 | 42509 | 95359 | 2471 | W | 06 12 01.3 | +19 47 26 | 5.75 | B9.5V | 3.5 | 86.3 | |||||
HR 2198 | 69 | BD+16 1035 | 42545 | 95365 | 06 12 03.3 | +16 07 50 | 4.95 | B5Vn | G:Cas-Tau OB1; member of Pleiades group.,SB:19.0d, K 15k/s. | ||||||||
HR 2199 | ξ | 70 | BD+14 1187 | 42560 | 95362 | W | 06 11 56.4 | +14 12 32 | 4.48 | B3IV | 7.9 | 40.0 | G:Member of the local association (Pleiades group); Cas-Tau OB1.,SB:45.10d, K 22.4, V0 +19.3, asini 13.41. | ||||
HR 2207 | BD+18 1129 | 42784 | 95397 | 06 13 33.4 | +18 40 49 | 6.58 | B8Vnn | G:Member of the local association (Pleiades group). | |||||||||
HR 2208 | BD+10 1050 | 42807 | 95394 | 06 13 12.6 | +10 37 39 | 6.45 | G2V | ||||||||||
HR 2210 | BD-02 1512 | 42824 | 132965 | 06 12 44.4 | -02 30 16 | 6.62 | A2V | ||||||||||
HR 2214 | BD+17 1182 | 42954 | 95419 | W | 06 14 28.6 | +17 54 23 | 5.88 | A5Vm | 0.0 | 0.5 | D:Binary. Occultation indicates sep. 0.27". | ||||||
HR 2218 | BD-03 1345 | 43023 | 132994 | 06 13 54.3 | -03 44 29 | 5.83 | G8III | G:Probable Hyades group. | |||||||||
HR 2220 | 71 | BD+19 1270 | 43042 | 95432 | 4842 | 06 14 50.9 | +19 09 23 | 5.20 | F6V | 5.6 | 25.4 | D:B and C optical. Aitken and Wallenquist disagree on magnitude difference: Aitken AB 6.0, AC 5.3, AD 4.8; Wallenquist,D:5.6, 7.6, 7.3, respectively. Separation 25", 76" and 86", respectively. | |||||
HR 2222 | BD+13 1173 | 43112 | 95444 | 2474 | I | W | 2878 | 06 15 08.5 | +13 51 04 | 5.91 | B1V | 6.6 | 21.3 | D:Companion, RV -2k/s, optical.,M:Old disk population runaway star. | |||
HR 2223 | 72 | BD+16 1060 | 43153 | 95447 | 06 15 25.1 | +16 08 35 | 5.30 | B7V | |||||||||
HR 2229 | 73 | BD+12 1081 | 43247 | 95457 | 06 15 45.0 | +12 33 04 | 5.33 | B9II-III | |||||||||
HR 2231 | BD+06 1172 | 43285 | 113650 | 06 15 40.1 | +06 03 58 | 6.07 | B6Ve | ||||||||||
HR 2232 | BD+04 1181 | 43317 | 113653 | 2478 | 06 15 47.0 | +04 17 01 | 6.64 | B3IV | |||||||||
HR 2233 | BD-00 1234 | 43318 | 133028 | 2477 | 06 15 34.3 | -00 30 44 | 5.65 | F6V | |||||||||
HR 2235 | BD+17 1191 | 43335 | 95473 | I | 06 16 23.8 | +17 10 53 | 6.39 | K5II | |||||||||
HR 2236 | BD+01 1275 | 43358 | 113656 | W | 06 15 54.0 | +01 10 09 | 6.37 | F5IV: | 0.0 | 0.2 | D:6.8 F5, 7.0, 28.1y, a = 0.165". | ||||||
HR 2241 | 74 | BD+12 1084 | 43386 | 95476 | 1169 | W | 06 16 26.6 | +12 16 20 | 5.04 | F5IV-V | 4.2 | 204.0 | |||||
HR 2246 | BD+01 1278 | 43461 | 113668 | 06 16 21.2 | +01 04 49 | 6.63 | B6V | ||||||||||
HR 2247 | 75 | BD+09 1173 | 43525 | 113675 | 2480 | 4890 | 06 17 06.6 | +09 56 33 | 5.39 | A2V | 0.2 | 0.1 | D:AP 6.1 A2IV, 9.0y, a = 0.109". B and C both 8.4v at 63" and 117", both optical. D, 11v at 5" from C. AP resolved,D:by speckle interferometry 1983.93, sep. 0.06". Aa resolved by speckle interferometry 1983.93, but unresolved 1983.94.,DYN:0.020". | ||||
HR 2248 | BD+07 1216 | 43526 | 113673 | 06 16 58.4 | +07 03 11 | 6.57 | B7III | ||||||||||
HR 2250 | BD+14 1233 | 43583 | 95494 | 06 17 33.3 | +14 03 30 | 6.59 | A0V | ||||||||||
HR 2251 | BD+05 1168 | 43587 | 113683 | W | 2896 | 06 17 16.1 | +05 06 01 | 5.71 | F9V | 3.9 | 189.7 | ||||||
HR 2253 | BD+14 1235 | 43683 | 95502 | 2481 | 4901 | 06 18 05.6 | +14 22 58 | 6.16 | A3V | 6.9 | 25.4 | D:AB binary. B, 13.0v at 2". C, optical? 13.28V, +0.56(B-V), +0.34(U-B). | |||||
HR 2258 | BD+17 1203 | 43819 | 95519 | V1155 Ori | 06 19 01.8 | +17 19 30 | 6.32 | B9IIIpSiCr: | VAR:Amp. 0.04U, 1.0785d. H and K lines vary. | ||||||||
HR 2259 | BD+09 1184 | 43821 | 113710 | 06 18 40.5 | +09 02 50 | 6.24 | K0 | SB:1325d, k 10.92k/s, v0 -24.85k/s, asini 179. | |||||||||
HR 2269 | BD+14 1247 | 44033 | 95543 | I | 2917 | 06 20 04.2 | +14 39 04 | 5.69 | K3Ib | VAR:Lc?, 5.68 - 5.81V. | |||||||
HR 2275 | BD-02 1564 | 44131 | 133118 | I | 2918 | 06 19 59.6 | -02 56 40 | 4.90 | M1III | ||||||||
HR 2276 | BD+11 1128 | 44173 | 95563 | 06 20 52.3 | +11 45 23 | 6.54 | B5III | ||||||||||
HR 2287 | BD+12 1123 | 44497 | 95599 | 06 22 36.5 | +12 34 12 | 6.00 | F0III | ||||||||||
HR 2302 | BD+16 1135 | 44867 | 95641 | 06 24 52.9 | +16 03 25 | 6.33 | G9III | ||||||||||
HR 2308 | BD+14 1283 | 44984 | 95659 | I | BL Ori | 06 25 28.1 | +14 43 19 | 6.24 | C5II | S:Technetium found in spectrum.,VAR:Lb 8.5 - 9.7p. |
Planetary Nebulae | ||||||||
---|---|---|---|---|---|---|---|---|
Name | RA | Dec | Type | bMag | vMag | Dim | Dreyer Description | Identification, Remarks |
NGC 2022 | 05 42 06.2 | +09 05 12 | PN | 12.4 | 11.6 | 0.65 | planetary, pB, vS, vlE | PK 196-10.1, CS=15.2 |
Galactic Nebulae | ||||||||
Name | RA | Dec | Type | bMag | vMag | Dim | Dreyer Description | Identification, Remarks |
NGC 1788 | 05 06 53.2 | -03 20 28 | RN | 5 × 3 | B, cL, R, bM *** 15, * 10, 1½' 318°, inv in the neby | LBN 916 | ||
NGC 1973 | 05 35 04.8 | -04 43 55 | EN | 7.0 | 5 × 5 | * 8·9 inv in Neb (V 30) | CED 55B, part of N 1977 | |
NGC 1975 | 05 35 18.0 | -04 41 00 | EN | 7.0 | 10 × 5 | B ** inv in neb (V 30) | CED 55C, part of N 1977 | |
NGC 1976 | 05 35 17.1 | -05 23 25 | EN+RN | 3.7 | 4.0 | 40 × 35 | !!! Θ¹ Orionis and the great neb | M 42, LBN 974, Orion nebula |
NGC 1977 | 05 35 18.0 | -04 49 15 | RN+OCL | 20 | !!, c¹ 42 Orionis and neb | OCL 525.1 | ||
NGC 1980 | 05 35 25.0 | -05 54 54 | EN+OCL | 14 × 14 | vF, vvL, ι 44 Orionis inv | Iota Orionis Nebula, OCL 529 | ||
NGC 1982 | 05 35 31.3 | -05 16 03 | EN | 6.8 | 20 × 15 | ! vB, vL, R with tail, mbM * 8·9 | M 43, CED 55G, Pos of CS | |
NGC 1999 | 05 36 25.4 | -06 42 57 | EN+RN | 2 × 2 | * 10, 11 inv in Neb | LBN 979 | ||
NGC 2023 | 05 41 38.2 | -02 15 33 | EN+RN | 10 × 10 | B * in M of L, lE neb | LBN 954 | ||
NGC 2024 | 05 41 42.0 | -01 51 24 | EN | 30 × 30 | ! irr, B, vvL, black sp incl | CED 55P, Flame nebula | ||
NGC 2064 | 05 46 18.4 | +00 00 21 | RN | 1 × 1 | eF, vS, * 9·10 np 4' | LBN 1627, part of M 78 | ||
NGC 2067 | 05 46 32.0 | +00 07 54 | RN | 8 × 3 | F, pL, M 78 s | DG 79, part of M 78 | ||
NGC 2068 | 05 46 45.0 | +00 04 48 | RN | 8.0 | 8 × 6 | B, L, wisp, gmbN, 3 st inv, r | M 78, DG 80 | |
NGC 2071 | 05 47 07.2 | +00 17 39 | RN | 8.0 | 7 × 5 | D * (10 & 14 m) with vF, L chev | LBN 938 | |
NGC 2163 | 06 07 49.5 | +18 39 27 | RN | 3 × 2 | eF, E, dif, * 11 att s | CED 62, DG 87, LBN 855, bipolar | ||
NGC 2174 | 06 09 00.3 | +20 38 26 | EN | 3.5 × 2 | eF, bet 3 vF st | CED 67A, knot in N 2175 | ||
NGC 2175 | 06 09 38.6 | +20 29 18 | EN | 40 × 30 | * 8 m in neb (Auw No 21) | LBN 854, OCL 476 | ||
IC 420 | 05 32 14.0 | -04 31 12 | RN | 6 | vF, spp * 9 (not verified) | LBN 963, vdB 44 | ||
IC 423 | 05 33 22.0 | -00 36 52 | EN | 2 × 2 | vF, L oval ring | LBN 913, CED 52 | ||
IC 424 | 05 33 37.2 | -00 24 47 | RN | 120 | vF, L, brightest f | DG 59 | ||
IC 426 | 05 36 31.0 | -00 17 54 | RN | 7 × 7 | vF, 5' diam | LBN 921, CED 55J | ||
IC 427 | 05 36 18.0 | -06 37 00 | EN+RN | L, probably connected with Great Neb | ||||
IC 428 | 05 36 24.2 | -06 27 06 | EN+RN | L, probably connected with Great Neb | ||||
IC 429 | 05 38 18.0 | -07 02 12 | RN | vF, vS, R [? inv in f one] | brightest part of IC 430, near V883 Ori | |||
IC 430 | 05 38 18.2 | -07 02 26 | RN | 11 × 11 | Neb band 10' l, np * 5m | CED 55K, DG 69 | ||
IC 431 | 05 40 14.0 | -01 27 48 | RN | 5 × 3 | Neb * 8.6 | LBN 944, CED 55L | ||
IC 432 | 05 40 55.0 | -01 30 24 | RN | 8 × 4 | Neb, lE, * 8.4 inv | LBN 946, CED 55M | ||
IC 434 | 05 41 00.0 | -02 27 12 | EN | 11.0 | 60 × 10 | Neb, 60' l, south from ζ Orionis | LBN 953, CED 55N, Horsehead nebula | |
IC 435 | 05 43 00.0 | -02 18 46 | RN | 4 × 3 | Neb, * 8.5 | CED 55Q | ||
IC 2159 | 06 09 57.0 | +20 25 54 | EN | vF, vL, dif | CED 67B, in N 2175 | |||
IC 2162 | 06 13 06.0 | +17 58 48 | EN | 3 × 3 | vF, pL, R, * 10 inv p | LBN 859, Sh2-255 | ||
Open Clusters | ||||||||
Name | RA | Dec | Type | bMag | vMag | Dim | Dreyer Description | Identification, Remarks |
NGC 1662 | 04 48 27.0 | +10 55 48 | I2p | 6.4 | 12 | Cl of L & S sc st | OCL 470 | |
NGC 1663 | 04 49 24.3 | +13 08 27 | IV2p | 15.8 | 14.5 | 9 | Cl, lRi, st L & S | OCL 461 |
NGC 1981 | 05 35 12.0 | -04 26 00 | III2p | 4.2 | 28 | Cl, vB, lRi, st L, sc | OCL 525 | |
NGC 2112 | 05 53 45.2 | +00 24 39 | II3m | 9.1 | 18 | Cl, pL, lRi, pC, st S | OCL 509 | |
NGC 2141 | 06 02 55.0 | +10 26 47 | II3r | 9.4 | 10 | F, pS, dif (Sw not found) | OCL 487 | |
NGC 2143 | 06 03 07.4 | +05 43 42 | OCL | 11 | Cl, L, pRi, vlC, st 10 | |||
NGC 2169 | 06 08 24.3 | +13 57 53 | I3p | 5.9 | 6 | Cl, S, lRi, pmC, ** Σ 848 | OCL 481 | |
NGC 2175 S | 06 10 54.0 | +20 36 36 | OCL | 5 | * 8 m in neb (Auw No 21) | Lund 1182, near N 2175 | ||
NGC 2180 | 06 09 36.2 | +04 42 44 | OCL | 6 | Cl, pRi, lC, st L and S | |||
NGC 2186 | 06 12 07.1 | +05 27 31 | II2p | 8.7 | 5 | Cl, pL, pRi, pC, st L and S | OCL 498 | |
NGC 2194 | 06 13 45.9 | +12 48 24 | III1r | 8.5 | 9 | Cl, L, Ri, gvmCM | OCL 495 | |
NGC 2202 | 06 16 50.7 | +05 59 48 | OCL | 7 | ** Chief of Cl | |||
Galaxies | ||||||||
Name | RA | Dec | Type | bMag | vMag | Dim | Dreyer Description | Identification, Remarks |
NGC 1661 | 04 47 07.7 | -02 03 18 | Sbc | 14.0 | 13.2 | 1.4 × 0.9 | vF, vS, bM | UGC 3166, MCG 0-13-8, CGCG 394-9 |
NGC 1670 | 04 49 42.6 | -02 45 36 | S0 | 13.8 | 12.8 | 1.3 × 0.7 | vF, vS | MCG 0-13-16, CGCG 394-17 |
NGC 1671 | 04 49 33.8 | +00 15 12 | S0 | 13.9 | 12.9 | 0.9 × 0.6 | pF, pS, R | IC 395, UGC 3178, MCG 0-13-15, CGCG 394-16 |
NGC 1678 | 04 51 35.4 | -02 37 22 | S0 | 14.2 | 13.2 | 1.1 × 0.8 | vF, S | MCG 0-13-19, CGCG 394-20 |
NGC 1682 | 04 52 19.7 | -03 06 19 | E-S0 | 14.5 | 13.5 | 0.9 × 0.9 | vF, vS, II 528 f 12s ±, * 9 s 4'.5 | MCG -1-13-28, NPM1G -03.0219 |
NGC 1683 | 04 52 17.5 | -03 01 27 | Sa | 15.6 | 14.7 | 1 × 0.4 | vF, R | NPM1G -03.0218 |
NGC 1684 | 04 52 31.1 | -03 06 20 | E2 | 13.0 | 12.0 | 2.2 × 1.7 | pF, pS, R, bM, * 9, 225° ± | MCG -1-13-31, IRAS 04500-0311 |
NGC 1685 | 04 52 34.2 | -02 56 59 | SB0-a | 15.0 | 14.1 | 1.3 × 0.9 | F | MCG -1-13-32, IRAS 04500-0301 |
NGC 1690 | 04 54 19.3 | +01 38 26 | E? | 15.3 | 14.3 | 1 × 1 | vF, vS, am vS st, L * sp | UGC 3198, MCG 0-13-27, CGCG 394-30 |
NGC 1691 | 04 54 38.3 | +03 16 04 | SB0-a | 12.9 | 12.0 | 2.3 × 1.8 | F, S, * 11 inv | UGC 3201, MCG 1-13-9, MK 1088, CGCG 420-19, IRAS 04520+0311 |
NGC 1709 | 04 58 44.0 | -00 28 40 | S0 | 15.2 | 14.2 | 0.9 × 0.7 | vF, vS, np II 516 | MCG 0-13-54, CGCG 394-58, NPM1G -00.0168 |
NGC 1713 | 04 58 54.7 | -00 29 19 | E1 | 13.9 | 12.7 | 1.4 × 1.2 | F, S, R, bM | UGC 3222, MCG 0-13-56, CGCG 394-59 |
NGC 1719 | 04 59 34.5 | -00 15 38 | Sa | 14.5 | 13.6 | 1.1 × 0.3 | pF, S, iR, pslbM | UGC 3226, MCG 0-13-60, CGCG 394-63 |
NGC 1729 | 05 00 15.6 | -03 21 11 | Sc | 13.6 | 12.9 | 1.7 × 1.4 | vF, pL, 2B st v nr | MCG -1-13-43, IRAS 04577-0325 |
NGC 1740 | 05 01 54.7 | -03 17 45 | E-S0 | 13.9 | 12.9 | 1.5 × 1.2 | eF, vS, * 12 sp | MCG -1-13-46, NPM1G -03.0222 |
NGC 1753 | 05 02 32.2 | -03 20 41 | Sa | 15.4 | 14.5 | 1.4 × 0.6 | eeF, pS, R, sf h 342 | MCG -1-13-48, IRAS 05000-0324 |
NGC 1762 | 05 03 37.0 | +01 34 24 | Sc | 13.4 | 12.6 | 1.7 × 1.1 | vF, vS | UGC 3238, MCG 0-13-67, CGCG 394-73, IRAS 05010+0130 |
NGC 1819 | 05 11 46.0 | +05 12 03 | SB0 | 13.5 | 12.5 | 1.3 × 1 | vF, S, R | UGC 3265, MCG 1-14-2, MK 1194, CGCG 421-4, IRAS 05091+0508 |
NGC 1843 | 05 14 06.1 | -10 37 36 | Sc | 13.4 | 12.7 | 2.1 × 1.7 | F, S, R, lbM | MCG -2-14-8, UGCA 107, IRAS 05117-1041 |
NGC 1875 | 05 21 45.7 | +06 41 20 | E-S0 | 14.7 | 13.7 | 0.8 × 0.7 | eF, S, R | MCG 1-14-31, CGCG 421-39, Arp 327, VV 169, HCG 34A |
NGC 1924 | 05 28 01.9 | -05 18 37 | SBbc | 13.3 | 12.5 | 1.6 × 1.2 | vF, pL, iR, st nr | MCG -1-14-11, NPM1G -05.0244, IRAS 05255-0521 |
NGC 2110 | 05 52 11.2 | -07 27 23 | E-S0 | 13.5 | 12.5 | 1.7 × 1.2 | eF, cS, lE, pslbM, er | MCG -1-15-4, IRAS 05497-0728 |
NGC 2119 | 05 57 26.9 | +11 56 56 | E2 | 15.0 | 14.0 | 1.2 × 1 | F, vS, R, bM | UGC 3380 |
IC 392 | 04 46 25.8 | +03 30 20 | S0 | 13.7 | 12.7 | 1 × 0.8 | pB, S, R, N = 12.5 | UGC 3158, MCG 1-13-1, CGCG 420-2, VV 665, IRAS 04438+0324 |
IC 404 | 05 13 19.6 | +09 45 17 | S | 15.4 | 14.6 | 0.5 × 0.4 | vF, vS, stellar, * 13 close | CGCG 446-1 |
IC 409 | 05 19 33.5 | +03 19 02 | S | 14.7 | 13.9 | 0.7 × 0.5 | pB, R, biN? | MCG 1-14-24, CGCG 421-26 |
IC 412 | 05 21 56.7 | +03 29 11 | Sab | 14.5 | 13.7 | 1.3 × 0.6 | vF, vS, stellar, Pos 115° Dist 36" | IC 2123, UGC 3298, MCG 1-14-34, KCPG 107A, VV 225, VV 630, CGCG 421-41 |
IC 413 | 05 21 58.7 | +03 28 56 | S0 | 14.8 | 13.8 | 0.9 × 0.7 | eF, vS, stellar, Pos 115° Dist 36" | IC 2124, UGC 3299, MCG 1-14-35, KCPG 107B, VV 225, VV 630, CGCG 421-42 |
IC 414 | 05 21 55.0 | +03 20 35 | S | 14.8 | 14.0 | 0.5 × 0.3 | eF, * 9 sf 2' | MCG 1-14-33, CGCG 421-40, IRAS 05192+0317 |
IC 421 | 05 32 08.5 | -07 55 04 | SBbc | 15.0 | 14.2 | 3.3 × 2.9 | vF, L | MCG -1-15-1, UGCA 111, NPM1G -07.0196, IRAS 05297-0757 |
IC 2112 | 05 00 30.0 | +04 23 11 | S | 15.0 | 14.2 | 0.5 × 0.2 | vF, pS, dif | CGCG 420-27 |
PNG | RA J2000.0 | Dec J2000.0 | Main ID | PK | IRAS | Discoverer | Identities | oDiam ["] | rDiam ["] | Dist [kpc] | Rvel [km/s] | ExpVel [km/s] | C* Name | C* Mag | C* SP Type |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PN G190.3-17.7 | 05 05 34 | +10 42 22 | J 320 | 190-17.1 | 05028+1038 | JONCKHEERE 1916 | ARO 60, VV 20, VV' 29 | 6.4 | 7.1 | -23.4 ± 0.7 | 15.0 (O-III) | AG82 39 | B: 14.45, V: 14.42 | WC | |
PN G193.6-09.5 | 05 40 44 | +12 21 17 | H 3-75 | 193-09.1 | MAYALL 1964 | ARO 218 | 24. | +9.5 ± 19.0 | |||||||
PN G196.6-10.9 | 05 42 06 | +9 05 18 | NGC 2022 | 196-10.1 | 05393+0903 | HERSCHEL 1785 | ARO 61, VV 23, VV' 34 | 19. | 1.8 | +14.0 ± 2.0 | 26. (O-III) | AG82 49, HD 37882, PLX 1306 | B: 15.89 | ||
PN G197.2-14.2 | 05 31 48 | +6 56 09 | K 1- 7 | 197-14.1 | KOHOUTEK 1963 | A 10, ARO 176 | 34. | 20. | +57.6 ± 3.5 | AG82 46 | B: 20.2 | ||||
PN G197.4-06.4 | 05 59 25 | +10 41 41 | WeDe 1 | WEINBERGER et al 1983 | 925. | +16.0 | 16. (N-II) | AG82 53 | U: 15.8, B: 17.1, V: 17.4 | Hg O(H) | |||||
PN G197.8-03.3 | 06 11 09 | +11 46 47 | A 14 | 197-03.1 | ABELL 1955 | A55 10, ARO 125, VV' 39 | 33. | AG82 59, CSI +11 -06084, UBV 6225 | U: 15.74, B: 15.75, V: 15.24 | F7 V? | |||||
PN G198.6-06.3 | 06 02 23 | +9 39 03 | A 12 | 198-06.1 | 05595+0939 | ABELL 1964 | ARO 220 | 37. | 35. | AG82 56 | B: 19.7 | ||||
PN G201.9-04.6 | 06 14 34 | +7 34 32 | We 1- 4 | WEINBERGER 1977 | 40. | AG82 60 | B: >21.1 | ||||||||
PN G204.0-08.5 | 06 04 47 | +3 56 27 | A 13 | 204-08.1 | ABELL 1955 | A55 9, ARO 124, VV' 38, YM 28 | 153. | 20. (O-III), 22.5 (N-II) | AG82 58, CSI +03 -06022, UBV 6150 | U: 19.06, B: 20.06, V: 19.87 |