Astronomy:77 Ceti
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Short description: Star in the constellation Cetus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Cetus |
| Right ascension | 02h 34m 42.62373s[1] |
| Declination | −07° 51′ 34.0113″[1] |
| Apparent magnitude (V) | 5.731[2] |
| Characteristics | |
| Spectral type | K2 III[3] |
| U−B color index | +1.68[4] |
| B−V color index | +1.393±0.008[5] |
| Astrometry | |
| Radial velocity (Rv) | 24.9±2[6] km/s |
| Proper motion (μ) | RA: +59.581[1] mas/yr Dec.: −63.696[1] mas/yr |
| Parallax (π) | 6.6740 ± 0.1337[1] mas |
| Distance | 489 ± 10 ly (150 ± 3 pc) |
| Absolute magnitude (MV) | +0.01[5] |
| Details | |
| Radius | 25.02+1.39 −4.09[1] R☉ |
| Luminosity | 189.1±4.5[1] L☉ |
| Temperature | 4,279+400 −114[1] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
77 Ceti is a single,[8] orange-hued star located 489[1] light years away in the equatorial constellation of Cetus. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.7.[2] This is an evolved giant star with a stellar classification of K2 III.[3] It is radiating 187 times the Sun's luminosity from its photosphere at an effective temperature of 4,206 K.[9]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 Høg, E. et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27. doi:10.1888/0333750888/2862. Bibcode: 2000A&A...355L..27H.
- ↑ 3.0 3.1 Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey 5. Bibcode: 1999MSS...C05....0H.
- ↑ Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode: 1986EgUBV........0M.
- ↑ 5.0 5.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Carnegie Institute Washington D.C. Publication (Washington). Bibcode: 1953GCRV..C......0W.
- ↑ "77 Cet". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=77+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.
- ↑ Chandler, Colin Orion et al. (2016). "The Catalog of Earth-Like Exoplanet Survey Targets (Celesta): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal 151 (3): 59. doi:10.3847/0004-6256/151/3/59. Bibcode: 2016AJ....151...59C.
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