HD 158476
 
| |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 31m 49.09839s[1] |
| Declination | −46° 02′ 12.4310″[1] |
| Apparent magnitude (V) | 6.048[2] |
| Characteristics | |
| Spectral type | F8/G0Ib[3] |
| B−V color index | +0.83[3] |
| Astrometry | |
| Radial velocity (Rv) | −29.0[4] km/s |
| Proper motion (μ) | RA: +2.05[1] mas/yr Dec.: −4.16[1] mas/yr |
| Parallax (π) | 2.24 ± 0.39[1] mas |
| Distance | approx. 1,500 ly (approx. 450 pc) |
| Details | |
| Luminosity | 752[5] L☉ |
| Temperature | 5,311[5] K |
| Rotational velocity (v sin i) | 9.5[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 158476 is a supergiant star in the southern constellation of Ara. There is a faint magnitude 10.5 companion at an angular separation of 20.0″ along a position angle of 209° (as of 2013).[6]
References
- 1 2 3 4 5 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. - ↑ Paunzen, E. (2015). "A new catalogue of Strömgren-Crawford uvbyβ photometry". Astronomy & Astrophysics. 580: A23. arXiv:1506.04568. Bibcode:2015A&A...580A..23P. doi:10.1051/0004-6361/201526413.
- 1 2 3 De Medeiros, J. R.; et al. (November 2002), "A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars", Astronomy and Astrophysics, 395: 97–98, Bibcode:2002A&A...395...97D, doi:10.1051/0004-6361:20021214
- ↑ 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. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
- 1 2 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
- ↑ 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
This article is issued from Wikipedia - version of the 4/20/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.