Misplaced Pages

p Velorum

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Triple star system in the constellation Vela
p Velorum
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
Right ascension 10 37 18.13995
Declination −48° 13′ 32.2349″
Apparent magnitude (V) 3.83 (4.13 / 5.76)
Characteristics
Spectral type F3IV + F0V + A6V
U−B color index +0.04
B−V color index +0.31
Astrometry
Radial velocity (Rv)21.20 ± 0.7 km/s
Proper motion (μ) RA: -133.41 mas/yr
Dec.: -1.82 mas/yr
Parallax (π)37.26 ± 0.36 mas
Distance87.5 ± 0.8 ly
(26.8 ± 0.3 pc)
Absolute magnitude (MV)2.15 / 2.70 / 2.14
Orbit
Primaryp Vel A
Companionp Vel B
Period (P)16.651 yr
Semi-major axis (a)0.361″
Eccentricity (e)0.726
Inclination (i)128.5°
Longitude of the node (Ω)37.2°
Periastron epoch (T)2019.562
Argument of periastron (ω)
(secondary)		288.9°
Details
p Vel Aa
Mass1.88 M☉
Radius2.56 R☉
Luminosity12.5 L☉
Temperature6,710 K
p Vel Ab
Mass1.29 M☉
Radius1.22 R☉
Luminosity2.79 L☉
Temperature6,740 K
p Vel B
Mass2.41 M☉
Other designations
CD−47° 6042, HIP 51986, HR 4167, SAO 222199
p Vel A: HD 92139
p Vel B: HD 92140
Database references
SIMBADdata

p Velorum (abbreviated to p Vel) is a triple star system in the constellation Vela. Parallax measurements by the Hipparcos spacecraft put it at a distance of 87.5 light-years, or 26.8 parsecs from Earth. It is visible to the naked eye with a combined apparent magnitude of 3.83.

The primary component is a spectroscopic binary whose components have an orbital period of 10.21 days. The inner spectroscopic binary consists of two F-type stars, a subgiant and a main-sequence star. There is a companion star which is a white A-type main-sequence star, with an apparent magnitude of 5.76. It is separated 0.361 arcseconds from the primary and has an orbital period of 16.651 years.

Notes

  1. ^ Calculated, using the Stefan-Boltzmann law and the star's effective temperature and luminosity, with respect to the solar nominal effective temperature of 5,772 K: ( 5 , 772 6 , 710 ) 4 ⋅ 12.535 = 2.56   R ⊙ . {\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{6,710}}{\biggr )}^{4}\cdot 12.535}}=2.56\ R_{\odot }.} ( 5 , 772 6 , 740 ) 4 ⋅ 2.79 = 1.22   R ⊙ . {\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{6,740}}{\biggr )}^{4}\cdot 2.79}}=1.22\ R_{\odot }.}

References

  1. ^ van Leeuwen, F.; et al. (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.
  2. ^ Evans, D. S. (1969). "A Rediscussion of p Velorum". Monthly Notices of the Royal Astronomical Society. 142 (4): 523–541. Bibcode:1969MNRAS.142..523E. doi:10.1093/mnras/142.4.523.
  3. ^ "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 2017-08-01. Retrieved 2017-07-16.
  4. Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  5. Eggl, S.; Pilat-Lohinger, E.; Funk, B.; Georgakarakos, N.; Haghighipour, N. (2013-02-01). "Circumstellar habitable zones of binary-star systems in the solar neighbourhood". Monthly Notices of the Royal Astronomical Society. 428 (4): 3104–3113. arXiv:1210.5411. Bibcode:2013MNRAS.428.3104E. doi:10.1093/mnras/sts257. ISSN 0035-8711.
Constellation of Vela
Stars
Bayer
Variable
HR
HD
Other
Exoplanets
Star
clusters
NGC
Other
Nebulae
NGC
Other
Galaxies
NGC
Galaxy clusters
Category


Stub icon

This binary or multiple star system-related article is a stub. You can help Misplaced Pages by expanding it.

Categories: