p Velorum

{{Short description|Triple star system in the constellation Vela}}

{{lower case}}

{{Starbox begin|name=p Velorum}}

{{Starbox observe

|epoch=J2000

|constell=Vela

|ra={{RA|10|37|18.13995}}{{cite journal|title=Validation of the new Hipparcos reduction|url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL|author=van Leeuwen, F.|display-authors=etal|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653–664|date=2007|arxiv=0708.1752|bibcode=2007A&A...474..653V|doi=10.1051/0004-6361:20078357|s2cid = 18759600}}

|dec={{DEC|-48|13|32.2349}}

|appmag_v=3.83 (4.13 / 5.76)

}}

{{Starbox character

|class=F3IV + F0V + A6V{{cite journal|bibcode=1969MNRAS.142..523E|doi=10.1093/mnras/142.4.523|title=A Rediscussion of p Velorum|journal=Monthly Notices of the Royal Astronomical Society|volume=142|issue=4|pages=523–541|year=1969|last1=Evans|first1=D. S.|doi-access=free}}

|b-v=+0.31

|u-b=+0.04

}}

{{Starbox astrometry

|radial_v=21.20 ± 0.7{{cite journal|title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system|author=Gontcharov, G. A.|date=2006|journal=Astronomy Letters|volume=32|issue=11|pages=759–771|bibcode=2006AstL...32..759G|doi=10.1134/S1063773706110065|arxiv=1606.08053|s2cid=119231169}}

|prop_mo_ra=-133.41

|prop_mo_dec=-1.82

|parallax=37.26

|p_error=0.36

|parallax_footnote=

|absmag_v=2.15 / 2.70 / 2.14

}}

{{Starbox orbit

|reference={{cite web|url=http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6|title=Sixth Catalog of Orbits of Visual Binary Stars|publisher=United States Naval Observatory|access-date=2017-07-16|archive-date=2017-08-01|archive-url=https://web.archive.org/web/20170801102553/http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6|url-status=dead}}

|primary=p Vel A

|name=p Vel B

|period=16.651

|axis=0.361

|inclination=128.5

|node=37.2

|periastron=2019.562

|eccentricity=0.726

|periarg=288.9

}}

{{Starbox detail

|source={{Cite journal |last1=Eggl |first1=S. |last2=Pilat-Lohinger |first2=E. |last3=Funk |first3=B. |last4=Georgakarakos |first4=N. |last5=Haghighipour |first5=N. |date=2013-02-01 |title=Circumstellar habitable zones of binary-star systems in the solar neighbourhood |bibcode=2013MNRAS.428.3104E |journal=Monthly Notices of the Royal Astronomical Society |volume=428 |issue=4 |pages=3104–3113 |doi=10.1093/mnras/sts257 |doi-access=free |arxiv=1210.5411 |issn=0035-8711}}

|component1=p Vel Aa

|mass=1.88

|radius={{solar radius calculator|type=LT|12.535|6790|decimals=2}}{{efn|name=rad}}

|luminosity=12.5

|temperature=6,710

|component2=p Vel Ab

|mass2=1.29

|radius2={{solar radius calculator|type=LT|2.79|6740|decimals=2}}{{efn|name=rad}}

|luminosity2=2.79

|temperature2=6,740

}}

{{Starbox detail|no_heading=y

|component1=p Vel B

|mass=2.41

}}

{{Starbox catalog

|names={{odlist|CD=-47° 6042|HIP=51986|HR=4167|SAO=222199}}

|component1=p Vel A

|names1={{odlist|HD=92139}}

|component2=p Vel B

|names2={{odlist|HD=92140}}

}}

{{Starbox reference

|Simbad=p+Vel

}}

{{Starbox end}}

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.