HD 75063

HD 75063
Location of a Velorum (circled in red)
Observation data
Epoch J2000.0      Equinox ICRS
Constellation Vela
Right ascension 08h 46m 01.64391s
Declination −46° 02′ 29.5042″
Apparent magnitude (V) 3.87
Characteristics
Spectral type A1III or A0 II
B−V color index 0.015±0.029
Astrometry
Radial velocity (Rv)+23.2±0.3 km/s
Proper motion (μ) RA: −12.82 mas/yr
Dec.: +4.23 mas/yr
Parallax (π)1.76±0.14 mas
Distance1,900 ± 100 ly
(570 ± 50 pc)
Absolute magnitude (MV)−4.89
Details
Mass8.6±0.3 M☉
Radius41 R☉
Luminosity6,800 L☉
Temperature8,195 K
Rotational velocity (v sin i)30 km/s
Age30.6±2.6 Myr
Other designations
a Vel, CD−45°4517, HD 75063, HIP 43023, HR 3487, SAO 220422
Database references
SIMBADdata

HD 75063 is a single star in the southern constellation of Vela. It has the Bayer designation of a Velorum, while HD 75063 is the identifier from the Henry Draper Catalogue. This is a naked-eye star with an apparent visual magnitude of 3.87 and has a white hue. The star is located at a distance of approximately 1,900 light-years from the Sun based on parallax measurements and has an absolute magnitude of −4.89. It is drifting further away with a radial velocity of +23 km/s.

This object has been stellar classifications of A1III and A0 II, matching a massive A-type giant or bright giant star, respectively. It is an estimated 31 million years old and is spinning with a projected rotational velocity of 30 km/s. The star has 8.6 times the mass of the Sun and around 4.5 times the Sun's radius. The star is radiating 6,800 times the Sun's luminosity from its photosphere at an effective temperature of 8,195 K.

References

  1. 1 2 3 4 5 6 7 8 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 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 Levato, O. H. (August 1972). "Rotational Velocities and Spectral Types of Some A-Type Stars". Publications of the Astronomical Society of the Pacific. 84 (500): 584. Bibcode:1972PASP...84..584L. doi:10.1086/129336.
  4. 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.
  5. 1 2 3 4 5 Tetzlaff, N.; et al. (January 2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.
  6. 1 2 3 McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017-10-01). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770–791. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433. ISSN 0035-8711. a Velorum's database entry at VizieR.
  7. 1 2 Royer, F.; et al. (May 2002). "Rotational velocities of A-type stars II. Measurement of vsini in the northern hemisphere". Astronomy & Astrophysics. 393: 897–912. arXiv:astro-ph/0205255. Bibcode:2002A&A...393..897R. doi:10.1051/0004-6361:20020943. S2CID 14070763.
  8. ↑ "a Vel". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-22.
  9. ↑ 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.