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HD 75710

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HD 75710
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
Right ascension 08h 49m 47.63746s[1]
Declination −45° 18′ 28.3346″[1]
Apparent magnitude (V) 4.94[2]
Characteristics
Spectral type A2 III[3]
B−V color index +0.043±0.003[2]
Astrometry
Radial velocity (Rv)+5.0±7.4[4] km/s
Proper motion (μ) RA: −11.490[1] mas/yr
Dec.: +13.450[1] mas/yr
Parallax (π)2.7107 ± 0.1660 mas[1]
Distance1,200 ± 70 ly
(370 ± 20 pc)
Absolute magnitude (MV)−2.71[2]
Details
Luminosity914.04[5] L☉
Temperature8,150[5] K
Rotational velocity (v sin i)110[6] km/s
Other designations
g Vel, CD−44° 4861, FK5 2698, GC 12204, HD 75710, HIP 43347, HR 3520, SAO 220540, PPM 313660[7]
Database references
SIMBADdata

HD 75710 is a single[8] star in the constellation of Vela. It has an apparent visual magnitude of approximately 4.94,[2] which is bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of 2.7 mas,[1] it is located about 1,200 light-years from the Sun.

The stellar classification of this star is A2 III,[3] suggesting it is in the giant star stage of its stellar evolution. It has a high rate of spin with a projected rotational velocity of 110 km/s, which is giving the star an oblate shape with an equatorial bulge that is 7% larger than the polar radius.[6] HD 75710 is radiating 914 times the Sun's luminosity from its photosphere at an effective temperature of 8,150 K.[5]

References

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  1. ^ a b c d e f 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. ^ a b c d 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. ^ 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. ^ a b c McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427: 343–357, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
  6. ^ a b Belle, G. T. (2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review, 20: 51, arXiv:1204.2572, Bibcode:2012A&ARv..20...51V, doi:10.1007/s00159-012-0051-2, S2CID 119273474.
  7. ^ "HD 75710". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-08-08.
  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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