Constellation Ara (Altar)

Ara
Ara: IAU Constellation Map [150]

Properties

Ara lies in a star-rich area of ​​the Milky Way south of scorpion's tail. The constellation encloses an area of ​​237 square degrees and culminates at midnight on June 12th, but is not visible from Europe. [9, 15]

Data for constellation Ara [150]
IAU NameAra
IAU GenitiveArae
IAU Abbr.Ara
English NameAltar
Season (47° N)Not visible
Right Ascension16h 34m 17s … 18h 10m 41s
Declination-67° 41' 26" … -45° 29' 10"
Area237 deg2
Neighbours (N↻)Sco, Nor, TrA, Aps, Pav, Tel, CrA

Mythology and History

Despite its unobtrusive outlines, the constellation was already known to the Greeks and Romans in ancient times. According to legend, Centaurus sacrificed the wolf on this altar. [7] Another explanation saw it the table of the gods. Among the 48 constellations of Ptolemy this appears as the three-legged censer to which he had assigned seven stars. [15]

Catalogs

Yale Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991) [154]
HR B F RA [hms] Dec [dms] vMag spType dMag Sep ["]
6229η16 49 47.1-59 02 293.76 K5III 9.523.6
6285ζ16 58 37.2-55 59 253.13 K3III
6295ε116 59 35.1-53 09 384.06 K4IIIab
6314ε217 03 08.8-53 14 135.29 F6V 7.625.
6451ι17 23 16.1-47 28 065.25 B2IIIne v5.342.8
6461β17 25 18.0-55 31 482.85 K3Ib-IIa
6462γ17 25 23.6-56 22 393.34 B1Ib 7.017.9
6468κ17 26 00.0-50 38 015.23 G8III 8.330.
6500δ17 31 05.9-60 41 023.62 B8Vn 8.047.4
6510α17 31 50.5-49 52 342.95 B2Vne v8.055.6
6537σ117 35 39.6-46 30 204.59 A0V
6549π17 38 05.6-54 30 015.25 A5IV-V
6569λ17 40 23.6-49 24 564.77 F3IV
6585μ17 44 08.7-51 50 035.15 G3IV-V
6743θ18 06 37.9-50 05 303.66 B2Ib

Revised+Historic NGC/IC, Version 22/9, © Dr. Wolfgang Steinicke [277]
Planetary Nebulae
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 632617 20 46.4-51 45 14PN12.20.32!!! planetary, pB, vS, RPK 338-8.1, ESO 228-PN1, AM 1716-514, CS=13.5
IC 126617 45 35.5-46 05 19PN12.10.17Stellar (gaseous spectrum)PK 345-8.1, ESO 279-PN7, CS=11.1
IC 464217 11 45.3-55 23 58PN13.40.4Planetary, stellarPK 334-9.1, ESO 180-PN4, CS=13.5
Galactic Nebulae
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 618816 40 05.0-48 39 42EN+RN20 × 12! F, vL, viE, B * invESO 226-EN19
Open Clusters
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 619316 41 20.3-48 45 48II3p5.214Cl, vL, lRi, lC, rrr, F neb invOCL 975, ESO 226-SC20, in N 6188
NGC 620016 44 08.6-47 28 11III2m7.415Cl (in Milky Way)OCL 978, ESO 277-SC8
NGC 620416 46 07.9-47 00 44I2p8.26Cl, pRi, eiCM, st 11…12OCL 982, ESO 277-SC10
NGC 620816 49 25.8-53 42 18II1m7.218Cl, L, Ri, lCM, st 9…12OCL 964, ESO 179-SC14
NGC 625016 57 56.0-45 56 12IV3p5.916Cl, L, lRi, lC, st 8…12OCL 991, ESO 277-SC20
NGC 625316 59 06.1-52 42 57I3m10.24Cl, S, triangular, st 13OCL 972, ESO 180-SC2
IC 465117 24 52.0-49 56 36II3m6.910Cl, pCOCL 987, ESO 228-SC2
Globular Clusters
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 635217 25 29.2-48 25 20XI7.89pF, LGCL 64, ESO 228-SC3
NGC 636217 31 54.8-67 02 51X8.115globular, cB, L, vgmbM, rrr, st 14…17GCL 66, ESO 102-SC8
NGC 639717 40 41.3-53 40 23IX5.331globular, B, vL, Ri, st 13GCL 74, ESO 181-SC4
Galaxies
NameRADecTypebMagvMagDimDreyer DescriptionIdentification, Remarks
NGC 621516 51 07.0-58 59 35Sc12.011.52.2 × 2pF, R, vglbM, * 4 p 79sESO 137-46, IRAS 16467-5854
NGC 6215 A16 52 48.7-58 56 49Sb14.213.41.5 × 0.5pF, R, vglbM, * 4 p 79sESO 138-4
NGC 622116 52 46.1-59 13 06SBc10.79.93.5 × 2.5globular, pB, cL, R, glbM, rrESO 138-3, AM 1648-590, IRAS 16484-5908
NGC 630017 16 59.7-62 49 13SBb11.010.24.3 × 2.8F, vL, vlE, am st, 2 st invESO 101-25, VV 734, IRAS 17123-6245
NGC 630517 18 00.9-59 10 16E/SB013.212.11.4 × 0.8vF, vS, R, glbMESO 138-19
NGC 632817 23 40.9-65 00 35SBab12.912.12.4 × 1.4vF, vS, vlE, glbMESO 102-3, AM 1718-645
IC 464617 23 53.4-60 00 01Sc12.611.92.8 × 1.7F, pL, spirESO 138-23, IRAS 17194-5957
IC 465217 26 26.5-59 43 42Sb14.113.30.8 × 0.4F, planetary, 15 magnESO 138-25, IRAS 17220-5941
IC 465317 27 07.0-60 52 45SB0-a13.212.51.1 × 0.6eeF, eS, bM, eF, * v nr, suspESO 138-28, AM 1722-605, IRAS 17225-6050
IC 465617 37 44.1-63 43 47Sc13.412.72.3 × 0.6eeF, vS, eE 90°, cbMESO 102-10, IRAS 17329-6341

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)