63 Ceti

63 Ceti
Observation data
Epoch J2000      Equinox J2000
Constellation Cetus
Right ascension 02h 11m 35.83502s[1]
Declination −01° 49′ 31.5439″[1]
Apparent magnitude (V) +5.93[2]
Characteristics
Spectral type K0III[3]
U−B color index +0.70[2]
B−V color index +0.97[2]
Astrometry
Radial velocity (Rv)27.69 ± 0.05[4] km/s
Proper motion (μ) RA: −11.27[1] mas/yr
Dec.: −32.96[1] mas/yr
Parallax (π)8.40 ± 0.46[1] mas
Distance390 ± 20 ly
(119 ± 7 pc)
Details[4]
Mass1.85 M☉
Radius11.06 R☉
Luminosity68.08 L☉
Surface gravity (log g)2.59 cgs
Temperature4940 K
Metallicity [Fe/H]−0.17 ± 0.06 dex
Rotational velocity (v sin i)1.27 km/s
Other designations
63 Cet, BD−02° 375, HD 13468, HIP 10234, HR 639, SAO 129739[5]
Database references
SIMBADdata

63 Ceti is a star in the constellation of Cetus. With an apparent magnitude of about 5.9,[2] the star is barely visible to the naked eye (see Bortle scale). Parallax estimates made by the Hipparcos spacecraft put it at a distance of about 390 light years (129 parsecs) away from the Earth.[1]

63 Ceti has a spectral type of K0III,[3] implying a K-type giant. These types of stars are generally reddish-colored stars with spectral types from K to M, with radii that are 10 to 100 times larger than the Sun.[6] 63 Ceti fits this description, with a radius about 11 times larger than the Sun, a mass of about 1.85 times the Sun, and an effective temperature of 4940 K.[4] 63 Ceti is currently at the horizontal branch, an stage in stellar evolution.[5]

References

  1. 1 2 3 4 5 6 van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752 Freely accessible. doi:10.1051/0004-6361:20078357.
  2. 1 2 3 4 Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
  3. 1 2 Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 5: 0. Bibcode:1999MSS...C05....0H.
  4. 1 2 3 Jones, M. I.; Jenkins, J. S.; Rojo, P.; Melo, C. H. F. (2011). "Study of the impact of the post-MS evolution of the host star on the orbits of close-in planets". Astronomy & Astrophysics. 536: A71. doi:10.1051/0004-6361/201117887.
  5. 1 2 "* 63 Cet". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 March 2017.
  6. ↑ David Darling. "Red giant". The Internet Encyclopedia of Science. Retrieved 21 March 2017.


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