Astronomy:Eta2 Fornacis
From HandWiki
Short description: Star in the constellation Fornax
  | |
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Fornax |
| Right ascension | 02h 50m 14.7837s[1] |
| Declination | −35° 50′ 37.023″[1] |
| Apparent magnitude (V) | 5.47[2] |
| Characteristics | |
| Evolutionary stage | giant |
| Spectral type | K0III[3] |
| B−V color index | 0.9[4] |
| Astrometry | |
| Radial velocity (Rv) | 17.30±0.76[1] km/s |
| Proper motion (μ) | RA: +51.003[1] mas/yr Dec.: +18.217[1] mas/yr |
| Parallax (π) | 7.6745 ± 0.1512[1] mas |
| Distance | 425 ± 8 ly (130 ± 3 pc) |
| Details | |
| Mass | 2.9[1] M☉ |
| Radius | 9.4[1] R☉ |
| Luminosity | 72[1] L☉ |
| Surface gravity (log g) | 2.76[1] cgs |
| Temperature | 5,061[1] K |
| Age | 414[1] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Eta2 Fornacis (η2 Fornacis) is an orange giant in the constellation of Fornax. The star has a spectral type of K0III and an apparent magnitude of 6.02. The star is visually close to, but unrelated with the similar stars η1 Fornacis and η3 Fornacis.[4] The star is located at approximately 425 light years away, and forms a visual binary system with a 10th magnitude companion.[6]
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 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.
- ↑ Hoffleit, D.; Warren, Jr., W. H. (1991). The Bright Star Catalogue (5th Revised ed.). New Haven: Astronomical Data Center, NSSDC/ADC. Bibcode: 1964cbs..book.....H.
- ↑ Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations -40_ƒ0 to -26_ƒ0. Bibcode: 1982mcts.book.....H.
- ↑ 4.0 4.1 "η2 Fornacis (eta2 Fornacis)". https://theskylive.com/sky/stars/eta2-fornacis-star.
- ↑ "* eta03 For". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+eta03+For.
- ↑ "VizieR". https://vizier.cds.unistra.fr/viz-bin/VizieR-S?WDS%20J02502-3551A.
 |  |
