HD 78004

Last updated
HD 78004
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Vela [1]
Right ascension 09h 04m 09.27988s [2]
Declination −47° 05′ 51.8548″ [2]
Apparent magnitude  (V)3.75 [1]
Characteristics
Spectral type K2III [3]
B−V color index +1.174±0.056 [1]
Astrometry
Radial velocity (Rv)+24.3±0.7 [1] km/s
Proper motion (μ)RA: −47.45 [2] mas/yr
Dec.: +41.48 [2] mas/yr
Parallax (π)10.89±0.11  mas [2]
Distance 300 ± 3  ly
(91.8 ± 0.9  pc)
Absolute magnitude  (MV)−1.06 [1]
Details
Radius 27.32+3.61
−2.54 [4]   R☉
Luminosity 271.5±8.3 [4]   L☉
Temperature 4,483+224
−270 [4]   K
Other designations
c Vel, CD−46°4883, HD 78004, HIP 44511, HR 3614, SAO 220803 [5]
Database references
SIMBAD data

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. [1] It is located at a distance of approximately 320  light years from the Sun based on parallax, [2] and is drifting further away with a radial velocity of +24 km/s. [1]

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. 1 2 3 4 5 6 7 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. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 6 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
  3. 1 2 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. 1 2 3 4 5 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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