Astronomy:HD 158476
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Short description: F-type supergiant star in the constellation Ara
  | |
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Ara[1] |
| Right ascension | 17h 31m 49.09850s[2] |
| Declination | −46° 02′ 12.4311″[2] |
| Apparent magnitude (V) | 6.048[3] |
| Characteristics | |
| Spectral type | F8/G0Ib[4] |
| B−V color index | +0.83[4] |
| Astrometry | |
| Radial velocity (Rv) | −29.0[5] km/s |
| Proper motion (μ) | RA: +1.810[2] mas/yr Dec.: −3.806[2] mas/yr |
| Parallax (π) | 1.7610 ± 0.0460[2] mas |
| Distance | 1,850 ± 50 ly (570 ± 10 pc) |
| Absolute magnitude (MV) | −2.13[1] |
| Details | |
| Mass | 5.8[2] M☉ |
| Radius | 38[2] R☉ |
| Luminosity | 1,142[2] L☉ |
| Surface gravity (log g) | 1.89[2] cgs |
| Temperature | 5,305[2] K |
| Rotational velocity (v sin i) | 9.5[4] 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
- ↑ 1.0 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.
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Paunzen, E. (2015). "A new catalogue of Strömgren-Crawford uvbyβ photometry". Astronomy & Astrophysics 580: A23. doi:10.1051/0004-6361/201526413. Bibcode: 2015A&A...580A..23P.
- ↑ 4.0 4.1 4.2 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. doi:10.1051/0004-6361:20021214. Bibcode: 2002A&A...395...97D.
- ↑ 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.
- ↑ 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
External links
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