Star in Monoceros constellation
3 Monocerotis Location of 3 Monocerotis (circled)
Observation dataEpoch J2000 Equinox J2000 Constellation Monoceros Right ascension 06h 01m 50.42241s [ 1] Declination −10° 35′ 52.5565″[ 1] Apparent magnitude (V)4.92[ 2] [ 3] Characteristics Spectral type B5 III[ 4] U−Bcolor index −0.58[ 5] B−Vcolor index −0.12[ 5] Astrometry Radial velocity (Rv )+39.00[ 6] km/s Absolute magnitude (MV )−1.94[ 2] A Proper motion (μ)RA: [ 7] mas /yr Dec.: [ 7] mas /yr Parallax (π)4.5717± 0.3115 mas [ 7] Distance 710 ± 50 ly pc ) B Proper motion (μ)RA: [ 8] mas /yr Dec.: [ 8] mas /yr Parallax (π)3.1006± 0.0960 mas [ 8] Distance 1,050 ± 30 ly pc ) Details 3 Mon A Mass 5.85[ 9] M ☉ Radius 4.5[ 10] R ☉ Luminosity 1,105[ 2] L ☉ Temperature 15,000[ 9] K Metallicity 0.00[ 11] dex Rotational velocity (v sin i )45[ 12] Other designations 3 Mon BD −10°1349GC 7631HD 40967HIP 28574HR 2128SAO 151037CCDM J06018-1036WDS J06018-1036[ 13] Database references SIMBAD data
3 Monocerotis is abinary star [ 3] equatorial constellation ofMonoceros , located approximately 780 light years away from the Sun based on parallax.[ 1] apparent visual magnitude of 4.92.[ 2] radial velocity of +39 km/s.[ 6]
The magnitude 4.98 primary, designated component A, has astellar classification of B5 III,[ 4] evolved blue giant star. It has 5.85[ 9] mass of the Sun and is radiating 1,105[ 2] Sun's luminosity from itsphotosphere at aneffective temperature of 15,000 K.[ 9] angular separation of″ [ 14]
^a b c 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 ^a b c d e 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 .S2CID 119257644 . Vizier catalog entry ^a b 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 . ^a b Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)".VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H .5050 .Bibcode :1995yCat.5050....0H . ^a b Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars".The Journal of the American Association of Variable Star Observers .42 (2): 443.Bibcode :2014JAVSO..42..443M . Vizier catalog entry ^a b 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 . ^a b c Brown, A. G. A. ; et al. (Gaia collaboration) (August 2018)."Gaia Data Release 2: Summary of the contents and survey properties" .Astronomy & Astrophysics 616 . A1.arXiv :1804.09365 Bibcode :2018A&A...616A...1G doi :10.1051/0004-6361/201833051 Gaia DR2 record for this source atVizieR .^a b c Brown, A. G. A. ; et al. (Gaia collaboration) (August 2018)."Gaia Data Release 2: Summary of the contents and survey properties" .Astronomy & Astrophysics 616 . A1.arXiv :1804.09365 Bibcode :2018A&A...616A...1G doi :10.1051/0004-6361/201833051 Gaia DR2 record for this source atVizieR .^a b c d Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (2010). "Masses and luminosities of O- and B-type stars and red supergiants".Astronomische Nachrichten .331 (4): 349.arXiv :1003.2335 Bibcode :2010AN....331..349H .doi :10.1002/asna.200911355 .S2CID 111387483 . Vizier catalog entry ^ Pasinetti Fracassini, L. E.; et al. (February 2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)".Astronomy and Astrophysics .367 (2) (Third ed.):521– 524.arXiv :astro-ph/0012289 Bibcode :2001A&A...367..521P .doi :10.1051/0004-6361:20000451 .S2CID 425754 . ^ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood".Astronomy Letters .38 (12):771– 782.arXiv :1606.08814 Bibcode :2012AstL...38..771G .doi :10.1134/S1063773712120031 .S2CID 118345778 . Vizier catalog entry ^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002)."Rotational Velocities of B Stars" .The Astrophysical Journal .573 (1):359– 365.Bibcode :2002ApJ...573..359A .doi :10.1086/340590 ^ "3 Mon" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2019-04-12 .^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001)."The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog" .The Astronomical Journal .122 (6): 3466.Bibcode :2001AJ....122.3466M .doi :10.1086/323920 Vizier catalog entry
