Zeta Caeli

Zeta Caeli, Latinized from ζ Caeli, is an orange-hued star in the constellation Caelum with a visual magnitude of +6.36.[2] It is an evolved K-type giant star and a member of the Milky Way's thick disk population.[8] Based upon an annual parallax shift of 7.59 mas as seen from Earth,[1] this star is located about 430 light years from the Sun.

Zeta Caeli
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Caelum
Right ascension 04h 47m 49.57719s[1]
Declination −30° 01′ 13.3391″[1]
Apparent magnitude (V) +6.36[2]
Characteristics
Spectral type K0 III[3]
B−V color index +1.06[2]
Astrometry
Radial velocity (Rv)+6.7±1.0[4] km/s
Proper motion (μ) RA: +28.93[1] mas/yr
Dec.: +92.67[1] mas/yr
Parallax (π)7.59 ± 0.36 mas[1]
Distance430 ± 20 ly
(132 ± 6 pc)
Absolute magnitude (MV)+0.76[5]
Details
Radius4.2[6] R☉
Luminosity62[7] L☉
Surface gravity (log g)2.39[8] cgs
Temperature4,620[8] K
Metallicity [Fe/H]−0.22[8] dex
Other designations
ζ Cae, CD−30° 2011, GC 5851, HD 30608, HIP 22280, HR 1539, SAO 195300[9]
Database references
SIMBADdata

References
  1. van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
  2. Cousins, A. W. J.; et al. (1966), "Photoelectric magnitudes and colours of southern stars, II", Royal Observatory Bulletins, 121: 1, Bibcode:1966RGOB..121....1C.
  3. Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1982mcts.book.....H.
  4. de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
  5. Anderson, 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, S2CID 119257644.
  6. Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics (Third ed.), 367 (2): 521, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
  7. McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
  8. Meléndez, J.; et al. (June 2008), "Chemical similarities between Galactic bulge and local thick disk red giant stars", Astronomy and Astrophysics, 484 (3): L21–L25, arXiv:0804.4124, Bibcode:2008A&A...484L..21M, doi:10.1051/0004-6361:200809398, S2CID 3201679.
  9. "zet Cae". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-09-09.
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