Astronomy:HD 156331
From HandWiki
Short description: Star in the constellation Ara
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[2] mas |
| Distance | 193 ± 6 ly (59 ± 2 pc) |
| Absolute magnitude (MV) | +2.42[1] |
| Other designations | |
| 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
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ 3.0 3.1 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
- ↑ 4.0 4.1 4.2 Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122 (6): 3466, doi:10.1086/323920, Bibcode: 2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, 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. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G.
External links
 |  |
