Constellation Caelum (Engraving Tool)

Caelum
Caelum: IAU Constellation Map [150]

Properties

Caelum is an inconspicuous, almost insignificant constellation at the end of Eridanus, southwest of Canis Maior and does not contain any stars brighter than 4.5 mag. It has an area of 125 square degrees and culminates at midnight on around November 30th. In Central Europe, it only just comes over the southern horizon. [9, 15]

Data for constellation Caelum [150]
IAU NameCaelum
IAU GenitiveCaeli
IAU Abbr.Cae
English NameEngraving Tool
Season (47° N)October … January
Right Ascension04h 19m 32s … 05h 05m 01s
Declination-48° 44' 18" … -27° 01' 30"
Area125 deg2
Neighbours (N↻)Lep, Eri, Hor, Dor, Pic, Col

Deep-Sky Object Descriptions

History

The constellation was introduced around 1752 by French astronomer Abbé Nicolas Louis de Lacaille, who lacked a little imagination. While all sorts of legendary heroes cavort in the constellations of the northern hemisphere, those in the southern hemisphere are more like the contents of a toolbox. The Caelum represents an engraving tool or burin, which was used by artisans to work on metal and ivory. [7]

Catalogs

Yale Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991) [154]
HR B F RA [hms] Dec [dms] vMag spType dMag Sep ["]
1443δ04 30 50.1-44 57 145.07 B2IV-V
1502α04 40 33.7-41 51 504.45 F2V 8.06.6
1503β04 42 03.5-37 08 405.05 F1V
1539ζ04 47 49.6-30 01 136.37 K1IV
1652γ105 04 24.4-35 29 004.55 K3III 4.13.0
1653γ205 04 26.1-35 42 196.34 F1III

Revised+Historic NGC/IC, Version 22/9, © Dr. Wolfgang Steinicke [277]
Galaxies
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 155804 20 15.7-45 01 52SBbc13.212.42.5 × 1pF, S, E, gbMESO 250-17, AM 0418-450, IRAS 04187-4508
NGC 156704 21 08.7-48 15 17E012.511.51.3 × 1.3F, S, R, bMESO 202-10, AM 0419-482
NGC 157004 22 08.9-43 37 48E213.212.31.5 × 1.2F, S, R, gbMNGC 1571, ESO 250-19, MCG -7-10-1, AM 0420-434
NGC 157204 22 42.7-40 36 04SBa13.312.42.4 × 1.2pF, S, R, * 13 nf 1'ESO 303-14, MCG -7-10-3, AM 0421-404, IRAS 04210-4042
NGC 158504 27 33.0-42 09 54Sc14.213.51.2 × 0.7pF, S, R, gbM, * 12, 287°.8ESO 303-18, MCG -7-10-6, IRAS 04259-4216
NGC 159504 28 21.6-47 48 55E313.712.71.3 × 0.9vF, S, R, bMESO 202-25, AM 0426-475, Carafe group
NGC 159804 28 33.4-47 46 57SBc13.813.31.4 × 0.8F, S, R, bMESO 202-26, AM 0427-475, IRAS 04271-4753, Carafe group
NGC 161604 32 41.9-43 42 54Sbc13.312.61.8 × 0.9F, S, E, vglbMESO 251-10, MCG -7-10-13, AM 0431-434, IRAS 04311-4349
NGC 165804 44 01.1-41 27 49Sbc14.313.51.5 × 0.5F, pS, pmE, glbMESO 304-16, MCG -7-10-20, AM 0442-413
NGC 166004 44 11.1-41 29 52Sa14.914.01 × 0.5vF, S, lE, glbMESO 304-18, MCG -7-10-21, AM 0442-413
NGC 166804 46 05.9-44 43 58E/SB013.812.81.6 × 0.9eF, R, att to * 14ESO 251-30, MCG -7-10-23, AM 0444-444
NGC 167904 49 55.5-31 58 02SBm12.211.62.7 × 2vB, L, iR, 4 st invESO 422-1, MCG -5-12-4, UGCA 96, AM 0448-320, IRAS 04480-3203
NGC 168704 51 21.1-33 56 21SBab14.713.91.3 × 0.5vF, S, R, vglbMESO 361-13, MCG -6-11-5
NGC 170104 55 51.1-29 53 01Sb13.612.81.2 × 0.9F, S, vlE, glbM, * 10, 75" sfESO 422-11, MCG -5-12-10, IRAS 04539-2957
NGC 175905 00 49.0-38 40 25E013.812.81.2 × 1.2vF, pL, vglbMESO 305-1, MCG -6-12-2, AM 0459-384
IC 206804 26 36.8-42 05 37S0-a14.213.31.2 × 0.8eF, pL, R, h 2643 fESO 303-17, MCG -7-10-4, FAIR 408, AM 0425-421
IC 210604 56 33.8-28 30 14SBb13.813.01.7 × 0.9eeF, pL, D * 24s fESO 422-12, MCG -5-12-11, IRAS 04545-2834

References

7«Der grosse Kosmos-Himmelsführer» von Ian Ridpath und Wil Tirion; Kosmos Verlag; ISBN 3-440-05787-9
9«Drehbare Sternkarte SIRIUS» von H. Suter-Haug; Hallwag-Verlag, Bern
15«Hartung's Astronomical Objects for Southern Telescopes» by David Malin and David J. Frew; Melbourne University Press 1995; ISBN 0-522-84553-3
150IAU: The Constellations, 11. Oktober 2020; iau.org/public/themes/constellations
154Yale Bright Star Catalog, 15. Oktober 2020; tdc-www.harvard.edu/catalogs/bsc5.html
277«Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; klima-luft.de/steinicke (2021-02-17)