| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10 27 52.72877 |
| Declination | −58° 44′ 21.8507″ |
| Apparent magnitude (V) | 3.81 |
| Characteristics | |
| Spectral type | F2II or F0Ib |
| B−V color index | 0.317±0.019 |
| Astrometry | |
| Radial velocity (Rv) | +9.4±0.7 km/s |
| Proper motion (μ) | RA: −14.47 mas/yr Dec.: +2.36 mas/yr |
| Parallax (π) | 2.43 ± 0.12 mas |
| Distance | 1,340 ± 70 ly (410 ± 20 pc) |
| Absolute magnitude (MV) | −4.44 |
| Details | |
| Mass | 7.00±0.55 M☉ |
| Radius | 45.05+3.74 −4.03 R☉ |
| Luminosity | 3,466±392 L☉ |
| Surface gravity (log g) | 1.50 cgs |
| Temperature | 6,598+317 −258 K |
| Metallicity | −0.37 dex |
| Rotational velocity (v sin i) | 22.0 km/s |
| Age | 100 Myr |
| Other designations | |
| s Car, NSV 4869, CD−58°2227, FK5 393, GC 14388, HD 90853, HIP 51232, HR 4114, SAO 238085 | |
| Database references | |
| SIMBAD | data |
HD 90853 is a single star in the southern constellation Carina. It has the Bayer designation s Carinae, while HD 90853 is the identifier from the Henry Draper catalogue. This is a variable star with an apparent visual magnitude that ranges from 3.36 down to 3.51, and thus is bright enough to be visible to the naked eye. It is located at a distance of approximately 1,340 light-years from the Sun based on parallax, and has an absolute magnitude of −4.44. The star is drifting further away with a radial velocity of +9 km/s.
This is an aging bright giant or supergiant star that has been assigned stellar classifications of F2II and F0Ib, respectively. It has seven times the mass of the Sun and has expanded to 45 times the Sun's radius. It is spinning with a projected rotational velocity of 22 km/s. The star is radiating 3,466 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 6,598 K.
References
- ^ 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.
- ^ 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. S2CID 119257644.
- ^ Malaroda, S. (August 1975). "Study of the F-type stars. I. MK spectral types". Astronomical Journal. 80: 637–641. Bibcode:1975AJ.....80..637M. doi:10.1086/111786.
- ^ van der Wal, S. E.; van Genderen, A. M. (April 1988). "VBLUW-photometry of the two FO Ib supergiants HD 80404 and HD 90853 and the K5 Ib supergiant HD 85891 with its associated cluster". Astronomy and Astrophysics. 195: 172–178. Bibcode:1988A&A...195..172V.
- ^ Hohle, M. M.; et al. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349–360. arXiv:1003.2335. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355. S2CID 111387483.
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ Mallik, Sushma V.; et al. (October 2003). "Lithium and rotation in F and G dwarfs and subgiants". Astronomy and Astrophysics. 409: 251–261. Bibcode:2003A&A...409..251M. doi:10.1051/0004-6361:20031084.
- "HD 90853". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-26.
- Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
- Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.
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