77 Ceti
| Observation data EpochJ2000EquinoxJ2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 02h34m42.62373s[1] |
| Declination | −07° 51′ 34.0113″[1] |
| Apparent magnitude(V) | 5.731[2] |
| Characteristics | |
| Spectral type | K2 III[3] |
| U−Bcolor index | +1.68[4] |
| B−Vcolor 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 ± 0.1337mas[1] |
| Distance | 489 ± 10ly (150 ± 3pc) |
| 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 Cetiis a single,[8]orange-huedstarlocated 489[1]light yearsaway in theequatorialconstellationofCetus.It is faintly visible to the naked eye, having anapparent visual magnitudeof 5.7.[2]This is anevolvedgiant starwith astellar classificationof K2 III.[3]It is radiating 187 times theSun's luminosityfrom itsphotosphereat aneffective temperatureof 4,206 K.[9]
References
[edit]- ^abcdefghiBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData 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 sourceatVizieR.
- ^abHøg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars".Astronomy and Astrophysics.355:L27.Bibcode:2000A&A...355L..27H.doi:10.1888/0333750888/2862.
- ^abHouk, 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 "Compilation of Eggen's UBV data, transformed to UBV (unpublished)".Catalogue of Eggen's UBV Data.Bibcode:1986EgUBV........0M.
- ^abAnderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation".Astronomy Letters.38(5): 331.arXiv:1108.4971.Bibcode:2012AstL...38..331A.doi:10.1134/S1063773712050015.S2CID119257644.
- ^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.RetrievedDecember 29,2018.
- ^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.S2CID14878976.
- ^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.arXiv:1510.05666.Bibcode:2016AJ....151...59C.doi:10.3847/0004-6256/151/3/59.S2CID119246448.
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