Gamma2 Fornacis: Difference between revisions
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| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Fornax |
| Right ascension | 02h 49m 54.1822s[1] |
| Declination | −27° 56′ 31.123″[1] |
| Apparent magnitude (V) | 5.377[2] |
| Characteristics | |
| Spectral type | A1 V[3] |
| Astrometry | |
| Radial velocity (Rv) | 24.0±4.2[4] km/s |
| Proper motion (μ) | RA: −47.053±0.247[1] mas/yr Dec.: 20.932±0.258[1] mas/yr |
| Parallax (π) | 6.3134 ± 0.1330 mas[1] |
| Distance | 520 ± 10 ly (158 ± 3 pc) |
| Absolute magnitude (MV) | −0.35[5] |
| Details | |
| Mass | 2.4[6] M☉ |
| Radius | 4.5[7] R☉ |
| Luminosity | 120[7] L☉ |
| Surface gravity (log g) | 3.5[6] cgs |
| Temperature | 9,000[6] K |
| Metallicity [Fe/H] | −0.02[8] dex |
| Rotational velocity (v sin i) | 149[9] km/s |
| Age | 401[6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Gamma2 Fornacis (γ2 For) is a star in the constellation Fornax, with an apparent magnitude of 5.4. It is an A1 main sequence star 2.4 times as massive as the Sun and 120 times as luminous. Gamma1 Fornacis is a 6th magnitude star four degrees to the north.
γ2 Fornacis is about 520 ly from Earth and is receding at 24 km/s. Comparison of its properties to theoretical models suggest an age of about 400 million years.
References
- ^ a b c d e 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.
- ^ . Bibcode:2000A&A...355L..27H.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ . Bibcode:1982MSS...C03....0H.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
- ^ . Bibcode:2012AstL...38..331A.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ a b c d . Bibcode:2016AJ....152...40G.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ a b . Bibcode:2017MNRAS.471..770M.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ . Bibcode:2019A&A...628A..94A.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ . Bibcode:2012A&A...537A.120Z.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help)
