HD 156331
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara[1] |
| Right ascension | 17h 19m 30.51713s[2] |
| Declination | −50° 03′ 49.5490″[2] |
| Apparent magnitude (V) | 6.27[3] (7.0 + 7.0)[4] |
| Characteristics | |
| Spectral type | F8III + B9V[4] |
| B−V color index | +0.41[3] |
| Astrometry | |
| Radial velocity (Rv) | +10.50±1.2[5] km/s |
| Proper motion (μ) | RA: +8.76[2] mas/yr Dec.: −32.86[2] mas/yr |
| Parallax (π) | 16.94±0.51 mas[2] |
| Distance | 193 ± 6 ly (59 ± 2 pc) |
| Absolute magnitude (MV) | +2.42[1] |
| 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°.[4]
References
- ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
- ^ 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 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
- ^ a b c 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.
External links