Star in the constellation Puppis
1 Puppis Location of 1 Puppis (circled)
Observation dataEpoch J2000 Equinox J2000 Constellation Puppis Right ascension 07h 43m 32.38668s [ 1] Declination −28° 24′ 39.1887″[ 1] Apparent magnitude (V)4.59[ 2] Characteristics Evolutionary stage AGB [ 3] Spectral type M1III[ 4] U−Bcolor index +1.94[ 2] B−Vcolor index +1.63[ 2] Astrometry Radial velocity (Rv )+32.40[ 5] km/s Proper motion (μ)RA: −13.782[ 1] mas /yr Dec.: +29.646[ 1] mas /yr Parallax (π)4.1384± 0.1143 mas [ 1] Distance 790 ± 20 ly pc ) Absolute magnitude (MV )−2.24[ 6] Details Radius 84[ 7] R ☉ Luminosity 1,585 - 1,644[ 7] L ☉ Surface gravity (log g )0.32[ 8] cgs Temperature ± 170[ 7] K Metallicity [Fe/H] −0.19[ 8] dex Rotational velocity (v sin i )1.0[ 9] Other designations 1 Pup ,NSV 3708 ,CD −28°4767GC 10409HD 62576HIP 37648HR 2993SAO 174391CCDM J07435-2825AWDS J07435-2825AGSC 06552-03227[ 10] Database references SIMBAD data
1 Puppis is a single[ 11] star in the southernconstellation ofPuppis . It lies in the northern part of the constellation at a distance of about 790 ly , east ofAludra inCanis Major and just north of the white supergiant,3 Puppis . This object is visible to the naked eye as a faint, red-hued star with anapparent visual magnitude of 4.59. It is moving further from the Earth with a heliocentricradial velocity of +32.4 km/s.
Alight curve for 1 Puppis, plotted from Hipparcos data TheHipparcos data for 1 Puppis shows low amplitude (0.007 magnitude) variability with a period of 1.8094 days.[ 12] starspots that cause the brightness to change as it rotates, and which varies invisual magnitude from 4.58 to 4.63.[ 13]
This is ared giant star with astellar classification of M1 III,[ 4] core andevolved away from themain sequence . The star is radiating 1,509 times theluminosity of the Sun from its enlargedphotosphere at aneffective temperature of 4,111 K.[ 8] angular separation of″ [ 14] [ 15] proper motion to 1 Puppis.[ 16] [ 17]
^a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties" .Astronomy and Astrophysics .674 : A1.arXiv :2208.00211 Bibcode :2023A&A...674A...1G .doi :10.1051/0004-6361/202243940 S2CID 244398875 . Gaia DR3 record for this source atVizieR .^a b c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system".CDS/ADC Collection of Electronic Catalogues .2237 .Bibcode :2002yCat.2237....0D . ^ Eggen, Olin J. (1992). "Asymptotic Giant Branch Stars Near the Sun".The Astronomical Journal .104 : 275.Bibcode :1992AJ....104..275E .doi :10.1086/116239 . ^a b Abt, Helmut A. (2008)."Visual Multiples. IX. MK Spectral Types" .The Astrophysical Journal Supplement Series .176 (1):216– 217.Bibcode :2008ApJS..176..216A .doi :10.1086/525529 ^ 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 . ^ 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 c Messineo, M.; Brown, A. G. A. (2019)."A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2" .The Astronomical Journal .158 (1): 20.arXiv :1905.03744 Bibcode :2019AJ....158...20M .doi :10.3847/1538-3881/ab1cbd S2CID 148571616 . ^a b c Earle Luck, R. (2014)."Parameters and Abundances in Luminous Stars" .The Astronomical Journal .147 (6): 137.Bibcode :2014AJ....147..137L .doi :10.1088/0004-6256/147/6/137 ^ Glebocki, R.; Gnacinski, P. (2005). "VizieR Online Data Catalog: Catalog of Stellar Rotational Velocities (Glebocki+ 2005)".VizieR On-line Data Catalog: III/244. Originally Published in: 2005csss...13..571G; 2005yCat.3244....0G .3244 .Bibcode :2005yCat.3244....0G . Vizier catalog entry ^ "1 Pup" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2019-04-13 .^ 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 . ^ Koen, Chris; Eyer, Laurent (March 2002)."New periodic variables from the Hipparcos epoch photometry" .Monthly Notices of the Royal Astronomical Society .331 (1):45– 59.arXiv :astro-ph/0112194 Bibcode :2002MNRAS.331...45K .doi :10.1046/j.1365-8711.2002.05150.x ^ "NSV 3708" .The International Variable Star Index . AAVSO. Retrieved3 October 2022 .^ 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 ^ Vallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties" .Astronomy and Astrophysics .674 : A1.arXiv :2208.00211 Bibcode :2023A&A...674A...1G .doi :10.1051/0004-6361/202243940 S2CID 244398875 . Gaia DR3 record for this source atVizieR .^ Vallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties" .Astronomy and Astrophysics .674 : A1.arXiv :2208.00211 Bibcode :2023A&A...674A...1G .doi :10.1051/0004-6361/202243940 S2CID 244398875 . Gaia DR3 record for this source atVizieR .^ Vallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties" .Astronomy and Astrophysics .674 : A1.arXiv :2208.00211 Bibcode :2023A&A...674A...1G .doi :10.1051/0004-6361/202243940 S2CID 244398875 . Gaia DR3 record for this source atVizieR .
