Star in the constellation Cetus
69 Ceti is a single[ 7] star located around 860[ 1] light years away in the equatorial constellation of Cetus . It is visible to the naked eye with an apparent visual magnitude of 5.3.[ 2] This is an aging red giant star with a stellar classification of M1/2III.[ 3] It is radiating 1,813 times the Sun's luminosity from an enlarged photosphere , 100 times the Sun's radius , at an effective temperature of 3,765 K.[ 1]
References
^ a b c d e f g h i j k 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 .
^ a b Høg, 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 .
^ a b Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey . 5 . Bibcode :1999MSS...C05....0H .
^ a b Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory . 4 : 99. Bibcode :1966CoLPL...4...99J .
^ Ryon, Jenna; Shetrone, Matthew D.; Smith, Graeme H. (2009). "Comparing the CaiiH and K Emission Lines in Red Giant Stars". Publications of the Astronomical Society of the Pacific . 121 (882): 842. arXiv :0907.3346 . Bibcode :2009PASP..121..842R . doi :10.1086/605456 . S2CID 17821279 .
^ "69 Cet" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved December 28, 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 , S2CID 14878976 .