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).[5]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 31m 49.09850s[1] |
| Declination | −46° 02′ 12.4311″[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: +1.810[1] mas/yr Dec.: −3.806[1] mas/yr |
| Parallax (π) | 1.7610 ± 0.0460 mas[1] |
| Distance | 1,850 ± 50 ly (570 ± 10 pc) |
| Details | |
| Mass | 5.8[1] M☉ |
| Radius | 38[1] R☉ |
| Luminosity | 1,142[1] L☉ |
| Surface gravity (log g) | 1.89[1] cgs |
| Temperature | 5,305[1] K |
| Rotational velocity (v sin i) | 9.5[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
edit- ^ a b c d e f g h i j Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ 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. S2CID 73623700.
- ^ a b c 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. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ^ 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
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