HD 156331 - Misplaced Pages

Star in the constellation Ara

HD 156331
Observation data Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	17 19 30.51713
Declination	−50° 03′ 49.5490″
Apparent magnitude (V)	6.27 (7.0 + 7.0)
Characteristics
Spectral type	F8III + B9V
B−V color index	+0.41
Astrometry

Radial velocity (R_v)	+10.50±1.2 km/s
Proper motion (μ)	RA: +8.76 mas/yr Dec.: −32.86 mas/yr
Parallax (π)	16.94 ± 0.51 mas
Distance	193 ± 6 ly (59 ± 2 pc)

Details
HD 156331 A
Mass	1.56 `M`_☉
Luminosity	8.6 `L`_☉
Surface gravity (log g)	3.46 cgs
Temperature	6597 K
Metallicity	−0.02 dex
Age	1.80 Gyr

Other designations
CD-49° 11324, HD 156331, HIP 84759, HR 6423, SAO 244631.
Database references
SIMBAD	data

HD 156331 is double star in the southern constellation of Ara. As of 2014, the pair have an angular separation of less than an arc second along a position angle of 49°.

References

^ 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.
^ Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C
^ 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
Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
^ Casagrande, L.; et al. (2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey". Astronomy & Astrophysics. 530 (A138): 21. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. S2CID 56118016.
^ McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352

Bayer	α (Choo/Tchou) β γ δ ε ε ζ (Tseen Yin) η θ ι κ λ μ (Cervantes) ν (V539) ν π ρ ρ 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

Exoplanets	Gliese 674 b HD 154672 b HD 154857 b c HD 156411 b μ Arae b c d e

NGC	6193 6200 6204 6208 6250 6352 6362 6397
Other	ESO 280-SC06 IC 4651 Westerlund 1

NGC	6188 6326
Other	Stingray Nebula Water Lily Nebula

NGC	6215 6221 6300 6328