HD 78004

This article is about c Velorum. For C Velorum, see HR 3407.
HD 78004
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Vela
Right ascension 09h 04m 09.27988s[1]
Declination −47° 05′ 51.8548″[1]
Apparent magnitude (V) 3.75[2]
Characteristics
Spectral type K2III[3]
B−V color index +1.174±0.056[2]
Astrometry
Radial velocity (Rv)+24.3±0.7[2] km/s
Proper motion (μ) RA: −47.45[1] mas/yr
Dec.: +41.48[1] mas/yr
Parallax (π)10.89 ± 0.11 mas[1]
Distance300 ± 3 ly
(91.8 ± 0.9 pc)
Absolute magnitude (MV)−1.06[2]
Details
Radius27.32+3.61
−2.54[4] R☉
Luminosity271.5±8.3[4] L☉
Temperature4,483+224
−270[4] K
Other designations
c Vel, CD–46°4883, HD 78004, HIP 44511, HR 3614, SAO 220803[5]
Database references
SIMBADdata

HD 78004 is a single[6] star in the constellation Vela. It has the Bayer designation c Velorum, while HD 78004 is the identifier from the Henry Draper catalogue. The object has an orange hue and is visible to the naked eye with an apparent visual magnitude of 3.75.[2] It is located at a distance of approximately 320 light years from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +24 km/s.[2]

This is an aging K-type giant star with a stellar classification of K2III,[3] having exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. At present, it has 27[4] times the radius of the Sun. The star is radiating 271.5 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,483 K.[4]

References

  1. ^ a b c d e f 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. Vizier catalog entry
  2. ^ a b c d e f 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. ^ a b Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  4. ^ a b c d e 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.
  5. ^ "c Vel". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-20.
  6. ^ 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

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