Epsilon Volantis
Multiple star in the constellation Volans
title: "Epsilon Volantis" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["b-type-subgiants", "a-type-main-sequence-stars", "spectroscopic-binaries", "multiple-star-systems", "volans", "bayer-objects", "durchmusterung-objects", "henry-draper-catalogue-objects", "hipparcos-objects", "bright-star-catalogue-objects"] description: "Multiple star in the constellation Volans" topic_path: "science/astronomy" source: "https://en.wikipedia.org/wiki/Epsilon_Volantis" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Multiple star in the constellation Volans ::
| name = ε Volantis | image= | image=Volans IAU.svg | float=center | width=250 | position=right | mark=Red circle.svg | mark_width=10 | mark_link=ε Vol | x%=50.3 | y%=42.8 | caption=Location of ε Volantis (circled) | epoch = J2000.0 | constell = Volans | ra = | dec = | appmag_v = +4.33 | class = B5 III (B6 IV + B8 + A2 V + A2 V) | b-v = −0.12 | u-b = | variable = | radial_v = +9.6 | prop_mo_ra = | prop_mo_dec = | parallax = 5.0597 | p_error = 0.1248 | parallax_footnote = | absmag_v = −1.82 | source= | component1 = ε Vol Aa | mass = | radius = | luminosity = | gravity = 3.62 | temperature = 14,348 | metal_fe = | rotational_velocity = 1 | age_gyr = | component2 = ε Vol Ab | gravity2 = 4.07 | temperature2 = 10,772 | rotational_velocity2 = 7 | names = |Simbad=eps+Vol
Epsilon Volantis, Latinized from ε Volantis, is a quadruple star system in the southern constellation Volans. This star is at the center of the constellation of Volans and connects the "wings" of the constellation. Based upon parallax measurements, is roughly 640 light years from Earth.
The primary component, Epsilon Volantis A, is a spectroscopic binary. It is classified a blue-white B-type giant star and has an apparent magnitude of +4.35. (The individual components are classified as B6IV and B8.) The binary system has an orbital period of 14.1683 days. The binary's companion, Epsilon Volantis B, is 6.05 arcseconds away and has an apparent magnitude of +8.1. It too is a spectroscopic binary, consisting of two A-type main sequence stars with stellar classifications of A2 V and an orbital period of "a few days".
References
| last1=Houk | first1=N. | last2=Cowley | first2=A. P. | title=University of Michigan Catalogue of two-dimensional spectral types for the HD stars | volume=1 |year=1975 | bibcode=1975mcts.book.....H | postscript=. }}
| last=Wilson | first=Ralph Elmer | date=1953 | title=General catalogue of stellar radial velocities | journal=Carnegie Institute Washington D.C. Publication | publisher=Carnegie Institution of Washington | bibcode=1953GCRV..C......0W | postscript=. }}
| last1=Cousins | first1=A. W. J. | title=UCBV Magnitudes and Colours of South Circumpolar Stars | journal=South African Astronomical Observatory Circulars | volume=1 | page=51 | year=1977 | bibcode=1977SAAOC...1...51C | postscript=. }}
| last1=Medici | first1=A. | last2=Hubrig | first2=S. | title=Triple System epsilon Vol and Quadruple System eta Mus: the Mass Ratio in Close Binary Systems | journal=Information Bulletin on Variable Stars | issue=4827 | page=1 | date=January 2000 | volume=4827 | bibcode=2000IBVS.4827....1M | postscript=. }}
| title=Spectroscopic study of early-type multiple stellar systems. II. New binary subsystems | last1=Veramendi | first1=M. E. | last2=González | first2=J. F. | journal=Astronomy & Astrophysics | volume=567 | id=A35 | pages=10 | date=July 2014 | doi=10.1051/0004-6361/201423736 | bibcode=2014A&A...567A..35V | postscript=. |arxiv = 1405.1084 | s2cid=21711755 }}
| title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | s2cid=119257644 | postscript=. }}
| title=eps Vol | accessdate=2016-09-02 | postscript=.
References
- (2023). "Application of the binary spectral model to high-resolution spectra. First estimation of the fundamental parameters for HD 20784". Monthly Notices of the Royal Astronomical Society.
- {{Cite Gaia EDR3. 5270986008289935232
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