Lambda1 Phoenicis
Star in the constellation Phoenix
title: "Lambda1 Phoenicis" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["a-type-main-sequence-stars", "circumstellar-disks", "double-stars", "hyades-stream", "phoenix-(constellation)", "bayer-objects", "durchmusterung-objects", "henry-draper-catalogue-objects", "hipparcos-objects", "bright-star-catalogue-objects"] description: "Star in the constellation Phoenix" topic_path: "science/astronomy" source: "https://en.wikipedia.org/wiki/Lambda1_Phoenicis" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Star in the constellation Phoenix ::
| name = λ1 Phoenicis | image = |image=Phoenix constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=Lambda1 Phoenicis |x=535|y=333 | caption = Location of λ1 Phoenicis (circled) | epoch = J2000 | constell = Phoenix | ra = | dec = | appmag_v = 4.76 | type = | class = A0Va | b-v = +0.02 | u-b = +0.04 | variable = | radial_v = | prop_mo_ra = +139.946 | prop_mo_dec = +21.275 | parallax = 17.8163 | p_error = 0.2228 | parallax_footnote = | absmag_v = 1.14 | mass = 2.26 | radius = 2.24 | gravity = 4.17 | metal_fe = 0.00 | age_myr = 224 | temperature = 9,931 | luminosity = 33.68 | rotational_velocity = 111 | names = | Simbad = lam01+Phe
λ1 Phoenicis, Latinized as Lambda1 Phoenicis, is a double star in the southern constellation of Phoenix. It is visible to the naked eye as a faint, white-hued point of light with a combined apparent visual magnitude of 4.76. The system is located approximately 183 light years away from the Sun based on parallax. It is a member of the Hyades Supercluster.
The brighter component is an A-type main-sequence star with a stellar classification of A0Va. It may form a binary system of two roughly equal stars. An infrared excess suggests there is a debris disk orbiting from the star with a mean temperature of 95 K. It has one visual companion at an angular separation of about and magnitude 13.7.
References
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| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 | postscript=. }}
| title=A Comprehensive Census of Nearby Infrared Excess Stars | last1=Cotten | first1=Tara H. | last2=Song | first2=Inseok | journal=The Astrophysical Journal Supplement Series | volume=225 | issue=1 | id=15 | pages=24 | date=July 2016 | bibcode=2016ApJS..225...15C | arxiv=1606.01134 | doi=10.3847/0067-0049/225/1/15 | s2cid=118438871 | doi-access=free }}
| last1=Gray |first1=R. O. | last2=Garrison | first2=R. F. | title=The Early A-Type Stars: Refined MK Classification, Confrontation with Stroemgren Photometry, and the Effects of Rotation | journal=The Astrophysical Journal Supplement Series | volume=65 | pages=581 | year=1987 | doi=10.1086/191237 | bibcode=1987ApJS...65..581G | doi-access=free }}
| last1=Anderson | first1=E. | last2=Francis | first2=Ch. | title=XHIP: An extended hipparcos compilation | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | arxiv=1108.4971 | doi=10.1134/S1063773712050015 | s2cid=119257644 }} Vizier catalog entry
| bibcode=2001AJ....122.3466M | doi=10.1086/323920 | title=The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog | journal=The Astronomical Journal | volume=122 | issue=6 | pages=3466 | year=2001 | display-authors=1 | last1=Mason | first1=Brian D. | last2=Wycoff | first2=Gary L. | last3=Hartkopf | first3=William I. | last4=Douglass | first4=Geoffrey G. | last5=Worley | first5=Charles E. | doi-access=free }} Vizier catalog entry
| last=Mallama | first=A. | title=Sloan Magnitudes for the Brightest Stars | journal=The Journal of the American Association of Variable Star Observers | volume=42 | pages=443 | year=2014 | issue=2 | bibcode=2014JAVSO..42..443M
| last1=Gontcharov | first1=G. A. | title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system | journal=Astronomy Letters | volume=32 | issue=11 | pages=759–771 | year=2006 | bibcode=2006AstL...32..759G | arxiv=1606.08053 | doi=10.1134/S1063773706110065 | s2cid=119231169
| last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A. | title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets | journal=The Astrophysical Journal | volume=804 | issue=2 | pages=146 | year=2015 | bibcode=2015ApJ...804..146D | arxiv=1501.03154 | doi=10.1088/0004-637X/804/2/146 | s2cid=33401607 }} Vizier catalog entry
| last1=Gontcharov | first1=G. A. | title=Dependence of kinematics on the age of stars in the solar neighborhood | journal=Astronomy Letters | volume=38 | issue=12 | pages=771–782 | year=2012 | bibcode=2012AstL...38..771G | arxiv=1606.08814 | doi=10.1134/S1063773712120031 | s2cid=118345778
| last1=Dommanget| first1=J.| last2=Nys| first2=O. | title=VizieR Online Data Catalog: CCDM (Catalog of Components of Double & Multiple stars) (Dommanget+ 2002) | journal=VizieR On-line Data Catalog: I/274. Originally Published in: Observations et Travaux 54 | volume=1274 | year=2002 | bibcode=2002yCat.1274....0D
References
- {{cite DR2. 4975414983273644032
- "lam01 Phe".
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