Constellation Sagitta (Arrow)

Properties
Sagitta is located in a star-rich region of the Milky Way, north of the star Atair in Aquila. It is a small constellation, but with a distinctive shape reminiscent of an arrow flying from west to east. The constellation, which is 80 square degrees, culminates around midnight on July 17th. [9, 15]
Stars with Proper Names:
- α Sge: Sham, Alsahm
Deep-Sky Object Descriptions

Mythology and History
Sagitta is the arrow with which Heracles hit the eagle who pecked at the liver of Prometheus every day, as punishment for stealing the fire from heaven for the people. According to another representation, the arrow is supposed to be the symbol of cosmic light.
The Greeks called the constellation Tóxon or Oistos, the Romans Latinized it to Sagitta and the Arabs spoke of El Sham . [10, 21]
Catalogs
HR | B | F | DM | HD | SAO | FK5 | IR | M* | ADS | VarID | RA | Dec | vMag | spType | dMag | Sep ["] | Remarks |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
HR 7171 | BD+19 3858 | 176301 | 104306 | 18 58 45.1 | +19 47 39 | 6.50 | B7III-IV | ||||||||||
HR 7198 | BD+19 3879 | 176776 | 104362 | 19 01 05.5 | +19 18 35 | 6.39 R | K1III | ||||||||||
HR 7200 | BD+20 4022 | 176819 | 86704 | 11659 | 19 01 22.6 | +20 50 01 | 6.69 | B2IV-V | SB:15.9526d, K 55.1k/s, V0 -10.3k/s, asini 11.9. | ||||||||
HR 7216 | BD+19 3888 | 177199 | 104405 | 3521 | 19 02 52.6 | +19 39 40 | 6.09 | K1III | |||||||||
HR 7260 | BD+16 3752 | 178428 | 104511 | W | Var? | 19 07 57.3 | +16 51 12 | 6.07 | G5V | 4.5 | 21.5 | SB:21.998d, K 12.8k/s, V0 +14.4k/s, asini 3.79. Unresolved by speckle interferometry 1986.46. | |||||
HR 7267 | BD+16 3758 | 178619 | 104524 | 3529 | 19 08 40.2 | +16 51 05 | 6.48 | F5IV-V | C:Other V magnitudes scatter from 6.10 to 6.68, B-V from +0.44 to +0.67, U-B from -0.01 to +0.23.,G:In Ursa cluster?,SB:4.812d, K 86.0k/s, V0 +8.8k/s, msin3i 1.26, asini 5.68. | ||||||||
HR 7285 | BD+16 3775 | 179588 | 104602 | 12160 | 19 12 34.4 | +16 50 47 | 6.73 | B9IV | 1.4 | 113.4 | D:B, 8.0v at 0.7" CPM. C is G5.,DYN:0.001". | ||||||
HR 7299 | BD+19 3956 | 180242 | 86981 | 19 15 02.6 | +20 12 12 | 6.00 | G8III | ||||||||||
HR 7301 | 1 | BD+20 4088 | 180317 | 86987 | 19 15 17.4 | +21 13 56 | 5.64 | A4V | N:1 Sge on borderline of Vul. Listed as Vul in BAC. | ||||||||
HR 7326 | BD+19 3975 | 181182 | 104711 | W | U Sge | 19 18 48.5 | +19 36 38 | 6.58 | B8III+K: | 3.0 | 92.0 | G:In cluster 4-5 Vul = Collinder 399 (nonmember).,S:Shell star.,SB:3.3806d, K 69.7k/s, V0 -10.1k/s, asini 3.24. Alternate orbit 3.3806205d, K 76k/s, V0 -5k/s, asini 3.25.,VAR:EA 6.58 - 9.18V, 3.3806260d. Period varies irregularly. i 90d. Semi-detached system. | |||||
HR 7369 | 2 | BD+16 3839 | 182490 | 104797 | W | 19 24 22.1 | +16 56 16 | 6.25 | A2III-IV | 0.8 | 340.6 | SB:7.390d, K 52.8k/s, V0 +11.2k/s, msin3i 1.01, asini 5.37. | |||||
HR 7463 | ε | 4 | BD+16 3918 | 185194 | 105061 | 12693 | 12213 | 19 37 17.4 | +16 27 46 | 5.66 | G8III v | 2.7 | 88.9 | D:B is B8, optical. | |||
HR 7475 | BD+16 3936 | 185622 | 105104 | I | 12750 | 19 39 25.4 | +16 34 17 | 6.38 | K4Ib | 2.7 | 31.8 | D:CPM companion B3V. | |||||
HR 7479 | α | 5 | BD+17 4042 | 185758 | 105120 | I | 12766 | 19 40 05.8 | +18 00 50 | 4.37 | G1II | 6.8 | 90. | D:Companions B and C optical.,N:Sham; Alsahm. Names originally corresponded to whole constellation Sagitta. | |||
HR 7488 | β | 6 | BD+17 4048 | 185958 | 105133 | 1513 | I | 19 41 02.9 | +17 28 34 | 4.37 | G8IIIaCN0.5 | G:Red star Pleiades group. | |||||
HR 7536 | δ | 7 | BD+18 4240 | 187076 | 105259 | 743 | I | W | Del Sge | 19 47 23.3 | +18 32 03 | 3.82 | M2II+A0V | D:Suspected visual double probably single image, composite spectrum. Secondary either B6 or A0V.,G:In reflection nebula; Gamma Cas-type nebula. Assoc. of Delta Sge with nebula probable but not certain; nebula,G:could be HII region excited by O8f star, 9 Sge, HR 7574.,SB:3725d, K 7.5k/s, V0 +1.9k/s, asini 364, vsini of both components =<50k/s.,VAR:Amp. 0.09p. | |||
HR 7546 | ζ | 8 | BD+18 4254 | 187362 | 105298 | 12973 | 19 48 58.7 | +19 08 32 | 5.00 | A3V | 0.5 | 0.2 | D:AB 5.5 A1V, 6.2 A3V, 22.8y, a = 0.146". Masses 4.0, 2.0 solar. C, 8.7v at 8" physical. Speckle interferometry 1985.5,D:gives sep. 0.180".,DYN:0.010".,RV:ADS 12973A, suspected SB. | ||||
HR 7574 | 9 | BD+18 4276 | 188001 | 105360 | 12503 | 19 52 21.8 | +18 40 19 | 6.23 | O7.5Iaf | G:Within 1d of HII reg. S84.,S:Shell star. Also classified O8If.,VAR:E?, 6.20 - 6.25V, amp. 0.06B, over 80d? Variable polarization. Expanding atmosphere. | |||||||
HR 7609 | 10 | BD+16 4067 | 188727 | 105436 | S Sge | 19 56 01.3 | +16 38 05 | 5.36 | G5Ib v | RV:Also varies with period 8.4d.,SB:676.2d, K 15.0k/s, V0 -10.0k/s, asini 135.,VAR:CDelta 5.28 - 6.04V, 8.382173d. Period varies. Spectrum varies, F6Ib-G5Ib. | |||||||
HR 7616 | BD+20 4351 | 188971 | 87963 | 19 57 00.2 | +20 59 53 | 6.48 R | A2IV | ||||||||||
HR 7622 | 11 | BD+16 4081 | 189090 | 105471 | 3592 | 19 57 45.4 | +16 47 21 | 5.53 | B9III | ||||||||
HR 7635 | γ | 12 | BD+19 4229 | 189319 | 105500 | 752 | I | 12638 | 19 58 45.4 | +19 29 32 | 3.47 | M0-III e | G:Hyades group.,S:Ultraviolet FeII emission. | ||||
HR 7645 | 13 | BD+17 4183 | 189577 | 105522 | I | 13230 | VZ Sge | 20 00 03.3 | +17 31 00 | 5.37 | M4IIIa | 7.5 | 28.5 | VAR:Lb? 5.27 - 5.57V, 7.0 - 7.24p. | |||
HR 7662 | BD+18 4365 | 190211 | 105608 | I | W | 20 03 16.4 | +18 30 02 | 5.96 | K3II-III+G8IV | 3.3 | 47.1 | ||||||
HR 7672 | 15 | BD+16 4121 | 190406 | 105635 | W | 12757 | 20 04 06.2 | +17 04 12 | 5.80 | G1V | 0.9 | 203.7 | |||||
HR 7679 | η | 16 | BD+19 4277 | 190608 | 105659 | 3609 | I | 20 05 09.5 | +19 59 28 | 5.10 | K2III | G:Hyades group. | |||||
HR 7696 | BD+16 4153 | 191178 | 105733 | I | 20 08 06.5 | +16 39 51 | 6.42 | M3III | |||||||||
HR 7705 | θ | 17 | BD+20 4453 | 191570 | 88276 | 13442 A | 20 09 56.6 | +20 54 55 | 6.48 | F5IV | 0.6 | 83.9 | D:AB binary. B, 8.7v at 13". C, optical.,DYN:0.016". | ||||
HR 7713 | BD+20 4462 | 191814 | 88309 | 20 11 03.5 | +21 08 05 | 6.22 | K0 | ||||||||||
HR 7746 | 18 | BD+21 4130 | 192836 | 88433 | 20 16 19.7 | +21 35 55 | 6.13 | K1III | G:UMa stream. | ||||||||
HR 7780 | BD+17 4294 | 193579 | 105991 | I | 20 20 21.4 | +17 47 35 | 5.80 | gK5 |
Planetary Nebulae | ||||||||
---|---|---|---|---|---|---|---|---|
Name | RA | Dec | Type | bMag | vMag | Dim | Dreyer Description | Identification, Remarks |
NGC 6879 | 20 10 26.6 | +16 55 25 | PN | 13.0 | 12.5 | 0.15 | planetary, stellar = 10m | PK 57-8.1, CS=15.0 |
NGC 6886 | 20 12 42.8 | +19 59 24 | PN | 12.2 | 11.4 | 0.17 | planetary, stellar = 10 m | PK 60-7.2, CS=15.7 |
IC 4997 | 20 20 08.8 | +16 43 56 | PN | 11.6 | 10.5 | 0.22 | Planetary, stellar | PK 58-10.1, CS=14.6 |
Globular Clusters | ||||||||
Name | RA | Dec | Type | bMag | vMag | Dim | Dreyer Description | Identification, Remarks |
NGC 6838 | 19 53 46.1 | +18 46 44 | XI | 8.4 | 7.2 | Cl, vL, vRi, pmC, st 11…16 | M 71, GCL 115 |
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 G050.1+03.3 | 19 11 31 | +16 51 32 | M 1-67 | 50+03.1 | 19092+1646 | MERRILL 1938 | ARO 10, He 2- 427, Sh 2- 80, VV 220, VV' 481 | 81. | 90. | AG82 350, CSI +16 -19093, LS II +164, NSV 11797, WR 124 | U: 12.16, B: 12.20, V: 11.16 | WN 8 | |||
PN G051.0+02.8 | 19 15 00 | +17 22 48 | WhMe 1 | WHITELOCK et al 1986 | 0. | B: 14.56, V: 13.42 | ? + B9V | ||||||||
PN G051.0+03.0 | 19 14 05 | +17 31 34 | He 2-430 | 51+03.1 | 19118+1726 | HENIZE 1964 | ARO 308, AS 345, MHa 305- 11 | < 5. | 1.7 | ||||||
PN G051.3+01.8 | 19 19 18 | +17 11 49 | PM 1-295 | PREITE-MARTINEZ 1988 | TCSS 1 | 20. | -13. ± 50. | B: 16.7, V: 15.1 | |||||||
PN G051.5+06.1 | 19 03 37 | +19 21 23 | K 1-17 | 51+06.1 | 19014+1916 | KOHOUTEK 1963 | ARO 83 | 45. | AG82 341 | B: 19.2 | |||||
PN G052.9+02.7 | 19 19 03 | +19 02 21 | K 3-31 | 52+02.1 | 19168+1856 | KOHOUTEK 1964 | ARO 315 | 0. | 1.5 | ||||||
PN G053.2-01.5 | 19 35 18 | +17 13 02 | K 3-38 | 53-01.1 | 19330+1706 | KOHOUTEK 1964 | 4. | 4.7 | |||||||
PN G053.3+03.0 | 19 18 41 | +19 33 56 | A 59 | 53+03.1 | 19164+1928 | ABELL 1955 | A55 48, ARO 84, VV' 494 | 87. | 75. | B: 22.21, V: 21.15 | |||||
PN G053.8-03.0 | 19 42 10 | +17 05 08 | A 63 | 53-03.1 | ABELL 1955 | A55 51, ARO 161, VV' 509 | 40. | AG82 379, CSI +16 -19399, HV 5452, UBV 16747, UU Sge | U: 14.35, B: 15.05, V: 14.67 | sdO + K-MV | |||||
PN G054.4-02.5 | 19 41 34 | +17 45 18 | M 1-72 | 54-02.1 | 19393+1738 | MINKOWSKI 1946 | ARO 159, He 2- 444, VV 239, VV' 507 | < 10. | 0.7 | B: 18.9, V: 17.7 | |||||
PN G055.1-01.8 | 19 40 25 | +18 49 19 | K 3-43 | 55-01.1 | 19382+1842 | KOHOUTEK 1964 | 2.8 | late-type,var. | |||||||
PN G056.8-06.9 | 20 02 36 | +17 36 50 | K 3-51 | 56-06.1 | 20003+1728 | KOHOUTEK 1964 | ARO 340 | 15. : | |||||||
PN G057.2-08.9 | 20 10 27 | +16 55 20 | NGC 6879 | 57-08.1 | 20081+1646 | PICKERING 1883 | ARO 107, He 2- 455, VV 249, VV' 525 | 5. | 5. | +9.0 ± 8.1 | 21.5 (O-III) | AG82 398, CSI +16 -20082, GCRV 12528 | B: 14.9, V: 14.8 | Of/WR ? | |
PN G058.3-10.9 | 20 20 09 | +16 43 53 | IC 4997 | 58-10.1 | 20178+1634 | FLEMING 1896 | ARO 38, He 2- 464, VV 256, VV' 532 | 1.6 | 1.6 | -66.2 ± 1.3 | 14.5 (O-III), 21.5 (N-II) | AG82 405, CSI +16-20178 0, HD 193538, QV Sge | B: 14.6, V: 14.4 | Of/WR | |
PN G058.6-05.5 | 20 01 42 | +19 54 41 | WeSb 5 | WEINBERGER et al 1981 | 150. | AG82 395 | B: 17.4 | ||||||||
PN G060.0-04.3 | 20 00 11 | +21 42 58 | A 68 | 60-04.1 | 19579+2134 | ABELL 1955 | A55 55, ARO 166, VV' 522 | 38. | AG82 394 | U: 13.42, B: 13.52, V: 13.26 | |||||
PN G060.1-07.7 | 20 12 43 | +19 59 22 | NGC 6886 | 60-07.2 | 20104+1950 | COPELAND 1884 | ARO 109, He 2- 458, VV 252, VV' 528 | 5.5 | 1.7 | -35.8 ± 1.1 | 20.0 (O-III), 25.5 (N-II) | AG82 402, CSI +19 -20105, GCRV 12572 | V: 18. | ||
PN G060.3-07.3 | 20 11 56 | +20 20 06 | He 1- 5 | 60-07.1 | 20097+2010 | HENIZE 1961 | ARO 169, He 2- 457, He 3-1844 | 29. | 2.0 | +39.1 ± 4.5 | 34.0 (O-III), 34. (N-II) | AG82 400, CSI +20 -20097, CSV 5066, FG Sge, LS II +20 19 | var.;G8-K0 Ia | ||
PN G061.4-09.5 | 20 22 22 | +20 06 18 | NGC 6905 | 61-09.1 | 20201+1956 | HERSCHEL 1831 | ARO 75, He 2- 466, VV 257, VV' 535 | 40. | 1.0 | -8.4 ± 1.7 | 43.5 (O-III) | AG82 408, CSI +19-20201 0, HD 193949, PLX 4855 | B: 16.3, V: 15.7 | WC-OVI, WC 3 |