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−B color index
+1.94[ 2]
B−V color 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 southern constellation of Puppis . It lies in the northern part of the constellation at a distance of about 790 ly , east of Aludra in Canis 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 an apparent visual magnitude of 4.59. It is moving further from the Earth with a heliocentric radial velocity of +32.4 km/s.
A light curve for 1 Puppis, plotted from Hipparcos data The Hipparcos 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 in visual magnitude from 4.58 to 4.63.[ 13]
This is a red giant star with a stellar classification of M1 III,[ 4] core and evolved away from the main sequence . The star is radiating 1,509 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,111 K.[ 8] angular separation of ″ [ 14] [ 15] proper motion to 1 Puppis.[ 16] [ 17]
References
^ 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 at VizieR .^ 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 . Retrieved 2019-04-13 .^ 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. Retrieved 3 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 at VizieR .^ 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 at VizieR .^ 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 at VizieR .
