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HD 157662

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HD 157662
Observation data Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	17^h27^m 12.46093^s^[1]
Declination	−50° 37′ 49.3379″^[1]
Apparent magnitude (V)	5.905^[2]
Characteristics
Spectral type	B9II^[3]
U−B color index	+0.055^[4]
B−V color index	+0.105^[4]
Astrometry

Radial velocity (R_v)	+11.0^[5] km/s
Proper motion (μ)	RA: +0.19^[1] mas/yr Dec.: −2.53^[1] mas/yr
Parallax (π)	1.10 ± 0.38 mas^[1]
Distance	approx. 3,000 ly (approx. 900 pc)

Details

Mass	7.87±1.68^[2] `M`_☉
Luminosity	8,214^[2] `L`_☉
Temperature	10,650^[2] K

Other designations
CD-50° 11283, HD 157662, HIP 85409, HR 6478, SAO 244755.
Database references
SIMBAD	data

HD 157662 is a bright giant star in the southern constellationofAra. It has a magnitude 10.91 companion at an angular separation of 76.4″ along a position angle of 159°.^[6]

References

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^ ^a ^b ^c ^d ^e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.

^ ^a ^b ^c ^d Hohle, M. M.; et al. (April 2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten, 331 (4): 349, arXiv:1003.2335, Bibcode:2010AN....331..349H, doi:10.1002/asna.200911355, S2CID 111387483

^ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H

^ ^a ^b Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M

^ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W

^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22

External links

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Constellation of Ara

Stars

Bayer	α (Choo/Tchou) β γ δ ε¹ ε² ζ (Tseen Yin) η θ ι κ λ μ (Cervantes) ν¹ (V539) ν² π ρ¹ ρ² σ
Variable	R S OY V626 V821 V828 V829 V854 V862 V872
HR	6177 6187 6207 6236 6251 6253 6297 6300 6312 6323 6408 6416 (41 G.) 6423 6438 6477 6478 6483 6487 6513 6759
HD	152079 153201 154672 154857 156411 (Inquill)
Other	2MASS J18082002−5104378 CXOU J164710.2−455216 Gliese 674 Gliese 676 IRAS 16594-4656 SAO 244567 SGR 1627−41 Westerlund 1-20 Westerlund 1 W26 Westerlund 1-75 Westerlund 1-237 Westerlund 1-243 XTE J1650−500