HD 96566

HD 96566 is a single[8] star in the southern constellation of Carina. It has the Bayer designation z1 Carinae; HD 96566 is the identifier from the Henry Draper Catalogue. This object has a yellow hue and is visible to the naked eye with an apparent visual magnitude of +4.62.[2] The star is located at a distance of approximately 376 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −1 km/s.[1] It has an absolute magnitude of −0.81.[2]

For other stars with the Bayer designation z Carinae, see z Carinae.
HD 96566
Observation data
Epoch J2000      Equinox J2000
Constellation Carina
Right ascension 11h 06m 32.42668s[1]
Declination −62° 25′ 26.8119″[1]
Apparent magnitude (V) +4.62[2]
Characteristics
Spectral type G7.5III[3]
B−V color index 0.988±0.065[2]
Astrometry
Radial velocity (Rv)−1.07±0.17[1] km/s
Proper motion (μ) RA: −36.93±0.16[4] mas/yr
Dec.: +9.46±0.14[4] mas/yr
Parallax (π)8.6750 ± 0.1387 mas[1]
Distance376 ± 6 ly
(115 ± 2 pc)
Absolute magnitude (MV)−0.81[2]
Details
Mass3.6[5] M☉
Radius20.21+0.36
−0.39[1] R☉
Luminosity214.4±4.0[1] L☉
Surface gravity (log g)2.59±0.17[6] cgs
Temperature4,913+49
−43[1] K
Metallicity [Fe/H]0.05±0.05[6] dex
Other designations
z1 Carinae, CPD−61°2067, GC 15288, GJ 9345, HD 96566, HIP 54301, HR 4325, SAO 251269[7]
Database references
SIMBADdata

This is an aging G-type giant star with a stellar classification of G7.5III,[3] which indicates it has exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. It has an estimated 3.6[5] times the mass of the Sun and has grown to 20[1] times the Sun's radius. The metallicity, or abundance of elements other than hydrogen and helium, is about the same as in the Sun.[6] It is radiating about 214[1] times the Sun's luminosity from its photosphere at an effective temperature of 4,913 K.[1]

References
  1. 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.
  2. 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.
  3. Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
  4. 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.
  5. Gondoin, P. (December 1999), "Evolution of X-ray activity and rotation on G-K giants", Astronomy and Astrophysics, 352: 217–227, Bibcode:1999A&A...352..217G.
  6. Alves, S.; et al. (April 2015), "Determination of the spectroscopic stellar parameters for 257 field giant stars", Monthly Notices of the Royal Astronomical Society, 448 (3): 2749–2765, arXiv:1503.02556, Bibcode:2015MNRAS.448.2749A, doi:10.1093/mnras/stv189.
  7. "HD 96566". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-11.
  8. Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
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