Omega Fornacis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Fornax[1][2] |
| Right ascension | 2h 33m 50.704s[3] |
| Declination | –28° 13′ 56.44″[3] |
| Apparent magnitude (V) | 4.9[2] |
| Characteristics | |
| Spectral type | B9.5V[1][2] |
| U−B color index | -0.13[1][2] |
| B−V color index | -0.05[1][2] |
| R−I color index | -0.07[1][2] |
| Astrometry | |
| Radial velocity (Rv) | –0.13 km/s |
| Proper motion (μ) | RA: –13.24 ± 0.54[3] mas/yr Dec.: –1.79 ± 0.60[3] mas/yr |
| Parallax (π) | 6.74 ± 0.71[3] mas |
| Distance | approx. 480 ly (approx. 150 pc) |
| Absolute magnitude (MV) | -0.96 [4] |
| Details | |
| Temperature | 10910 ± 420[5] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
Omega Fornacis (ω For) is a class B9.5V[2] (blue main-sequence) star in the constellation Fornax. Its apparent magnitude is 4.90[2] and it is approximately 480 light years away based on parallax.[3] It is a binary star with one A7V (white main-sequence) companion with apparent magnitude 7.88 and separation 10.8" (corresponding to roughly 1600 AU based on parallax).[6]
References
- 1 2 3 4 5 6 "Omega Fornacis". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2012-07-13.
- 1 2 3 4 5 6 7 8 Hoffleit, D.; Warren, Jr., W. H. (1991). "VizieR Detailed Page". Bright Star Catalogue, 5th Revised Ed. (Preliminary Version). CDS. Retrieved 2012-07-13.
- 1 2 3 4 5 6 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.Vizier catalog entry - ↑ Absolute magnitude calculated as , where is the star's absolute magnitude, is the star's apparent magnitude, and is the star's measured parallax in arcseconds.
- ↑ Zorec, J.; et al. (2009). "Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff". Astronomy and Astrophysics. 501 (1): 297–320. arXiv:0903.5134. Bibcode:2009A&A...501..297Z. doi:10.1051/0004-6361/200811147.
- ↑ 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.Vizier catalog entry
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