20 Puppis

From Wikipedia, the free encyclopedia
Jump to: navigation, search
20 Puppis
Puppis constellation map.svg
Red circle.svg

Location of 20 Puppis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 08h 13m 19.96755s[1]
Declination −15° 47′ 17.6021″[1]
Apparent magnitude (V) 4.99[2]
Characteristics
Spectral type G5II[3]
U−B color index +0.78[2]
B−V color index +1.07[2]
Astrometry
Radial velocity (Rv) +16.80[4] km/s
Proper motion (μ) RA: -12.41[1] mas/yr
Dec.: -3.35[1] mas/yr
Parallax (π) 3.75 ± 0.30[1] mas
Distance 870 ± 70 ly
(270 ± 20 pc)
Absolute magnitude (MV) -2.12[5]
Details
Luminosity 913[5] L
Surface gravity (log g) 0.80[6] cgs
Temperature 5,078[7] K
Metallicity [Fe/H] -0.18[5] dex
Rotational velocity (v sin i) 6.9[8] km/s
Other designations
20 Pup, BD-15°2324, FK5 311, GC 11184, GSC 05996-02764, HIP 40259, HR 3229, HD 68752, SAO 153993
Database references
SIMBAD data

20 Puppis (20 Pup) is a class G5II[3] (yellow bright giant) star in the constellation Puppis. Its apparent magnitude is 4.99[2] and it is approximately 870 light years away based on parallax.[1]

References[edit]

  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c d 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. 
  3. ^ a b Lyubimkov, Leonid S.; Lambert, David L.; Kaminsky, Bogdan M.; Pavlenko, Yakov V.; Poklad, Dmitry B.; Rachkovskaya, Tamara M. (2012). "Lithium abundance in atmospheres of F- and G-type supergiants and bright giants". Monthly Notices of the Royal Astronomical Society. 427: 11. arXiv:1212.6057Freely accessible. Bibcode:2012MNRAS.427...11L. doi:10.1111/j.1365-2966.2012.21617.x. 
  4. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  5. ^ a b c Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971Freely accessible. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.  Vizier catalog entry
  6. ^ Soubiran, Caroline; Le Campion, Jean-François; Brouillet, Nathalie; Chemin, Laurent (2016). "The PASTEL catalogue: 2016 version". Astronomy & Astrophysics. 591: A118. arXiv:1605.07384Freely accessible. Bibcode:2016A&A...591A.118S. doi:10.1051/0004-6361/201628497. 
  7. ^ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427: 343. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.  Vizier catalog entry
  8. ^ De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401.  Vizier catalog entry