19 Puppis

19 Puppis


Location of 19 Puppis (circled)

Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 08h 11m 16.30585s[1]
Declination −12° 55′ 37.1952″[1]
Apparent magnitude (V) 4.72[2]
Characteristics
Spectral type G9III-IIIb[3]
U−B color index +0.76[2]
B−V color index +0.96[2]
Astrometry
Radial velocity (Rv)+36.07[4] km/s
Proper motion (μ) RA: -25.79[1] mas/yr
Dec.: +8.09[1] mas/yr
Parallax (π)18.46 ± 0.21[1] mas
Distance177 ± 2 ly
(54.2 ± 0.6 pc)
Absolute magnitude (MV)1.05[5]
Details
Mass1.05[6] M☉
Radius8.9[6] R☉
Luminosity43.31[5] L☉
Surface gravity (log g)2.56[6] cgs
Temperature4,750[7] K
Metallicity [Fe/H]+0.06[5] dex
Rotational velocity (v sin i)2.0[8] km/s
Other designations
BD-12°2385, CCDM J08112-1256AB, GC 11134, GSC 05434-03731, HIP 40084, HR 3211, HD 68290, SAO 153942, WDS J08113-1256AB
Database references
SIMBADdata

19 Puppis (19 Pup) is a class G9III[3] (yellow giant) star in the constellation Puppis. Its apparent magnitude is 4.72[2] and it is approximately 177 light years away based on parallax.[1]

It is a multiple star system with six reported components. Beside the primary, there are B, at magnitude 11.2 and separation 2.2", C, at magnitude 13.2 and separation 30.7", D, at magnitude 8.9 and separation 57.8", E, at magnitude 9.37 and separation 70.1", and F, at magnitude 10.74 and separation 114.1".[9]

References

  1. 1 2 3 4 5 6 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. Bibcode:2007A&A...474..653V. arXiv:0708.1752 Freely accessible. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 1 2 3 4 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. 1 2 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.
  4. ↑ Massarotti, Alessandro; Latham, David W.; Stefanik, Robert P.; Fogel, Jeffrey (2008). "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity". The Astronomical Journal. 135: 209. Bibcode:2008AJ....135..209M. doi:10.1088/0004-6256/135/1/209.
  5. 1 2 3 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. Bibcode:2012AstL...38..331A. arXiv:1108.4971 Freely accessible. doi:10.1134/S1063773712050015. Vizier catalog entry
  6. 1 2 3 Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555. Bibcode:1999A&A...352..555A. arXiv:astro-ph/9911002 Freely accessible. Vizier catalog entry
  7. ↑ Gontcharov, G. A. (2009). "Red giant clump in the Tycho-2 catalogue". Astronomy Letters. 34 (11): 785. Bibcode:2008AstL...34..785G. arXiv:1607.00619 Freely accessible. doi:10.1134/S1063773708110078. Vizier catalog entry
  8. ↑ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. Bibcode:2014A&A...561A.126D. arXiv:1312.3474 Freely accessible. doi:10.1051/0004-6361/201220762. Vizier catalog entry
  9. ↑ 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
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