Astronomy:6 Ceti
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00h 11m 15.85761s[1] |
| Declination | −15° 28′ 04.7258″[1] |
| Apparent magnitude (V) | 4.89[2] |
| Characteristics | |
| Spectral type | F8 V Fe−0.8 CH−0.5[3] |
| B−V color index | 0.487±0.012[2] |
| Astrometry | |
| Radial velocity (Rv) | +16.70±0.08[4] km/s |
| Proper motion (μ) | RA: −83.38[1] mas/yr Dec.: −270.17[1] mas/yr |
| Parallax (π) | 53.34 ± 0.64[1] mas |
| Distance | 61.1 ± 0.7 ly (18.7 ± 0.2 pc) |
| Absolute magnitude (MV) | 3.53[2] |
| Details[5] | |
| Mass | 1.12+0.08 −0.04 M☉ |
| Luminosity | 3.34[2] L☉ |
| Surface gravity (log g) | 4.17±0.12 cgs |
| Temperature | 6,289±81 K |
| Metallicity [Fe/H] | −0.33±0.06 dex |
| Rotational velocity (v sin i) | 4.88[6] km/s |
| Age | 4.2+0.8 −0.9 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
6 Ceti is a single[8] star in the equatorial constellation of Cetus. It is visible to the naked eye with an apparent magnitude of 4.89.[2] The annual parallax shift as measured from Earth's orbit is 53.34 mas, which yields a distance estimate of 61.1 light years. The star is moving further from the Sun with a constant radial velocity of +16.70 km/s.[4] It is one of the IAU's standard velocity stars.[9]
Gray et al. (2006) assigned this star a stellar classification of F8 V Fe−0.8 CH−0.5,[3] indicating it is an F-type main-sequence star with an underabundance of iron and the CH molecule in its stellar atmosphere. It is about 4.2 billion years old with 1.12[5] times the mass of the Sun and is spinning with a projected rotational velocity of 4.88 km/s.[6] The star is radiating 3.34[2] times the Sun's luminosity from its photosphere at an effective temperature of about 6,289 K.[5]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2006), "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample", The Astronomical Journal 132 (1): 161–170, doi:10.1086/504637, Bibcode: 2006AJ....132..161G.
- ↑ 4.0 4.1 Maldonado, J. et al. (October 2010), "A spectroscopy study of nearby late-type stars, possible members of stellar kinematic groups", Astronomy and Astrophysics 521: A12, doi:10.1051/0004-6361/201014948, Bibcode: 2010A&A...521A..12M.
- ↑ 5.0 5.1 5.2 Bensby, T. et al. (2014), "Exploring the Milky Way stellar disk. A detailed elemental abundance study of 714 F and G dwarf stars in the solar neighbourhood", Astronomy & Astrophysics 562 (A71): 28, doi:10.1051/0004-6361/201322631, Bibcode: 2014A&A...562A..71B.
- ↑ 6.0 6.1 Martínez-Arnáiz, R. et al. (September 2010), "Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter", Astronomy and Astrophysics 520: A79, doi:10.1051/0004-6361/200913725, Bibcode: 2010A&A...520A..79M, http://eprints.ucm.es/37826/1/davidmontes17libre.pdf, retrieved 2018-11-04.
- ↑ "6 Cet". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=6+Cet.
- ↑ 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ Scarfe, C. D. et al. (1990), "Coude Radial Velocities of Standard Stars", Publications of the Dominion Astrophysical Observatory 18: 21, Bibcode: 1990PDAO...18...21S.
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