HD 69142

Last updated
HD 69142
Puppis constellation map.svg
Red circle.svg
Location of HD 69142 (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Puppis
Right ascension 08h 14m 02.92219s [1]
Declination −40° 20 52.4031 [1]
Apparent magnitude  (V)4.44 [2]
Characteristics
Spectral type K1II-III [3]
U−B color index +1.09 [2]
B−V color index +1.17 [2]
Astrometry
Radial velocity (Rv)+13.50 [4] km/s
Proper motion (μ)RA: +45.51 [1] mas/yr
Dec.: −65.60 [1] mas/yr
Parallax (π)10.93±0.48  mas [1]
Distance 300 ± 10  ly
(91 ± 4  pc)
Absolute magnitude  (MV)−0.38 [5]
Orbit [6]
Primaryh2 Puppis Aa
Companionh2 Puppis Ab
Period (P)930 days
Semi-major axis (a)10.66 mas
Eccentricity (e)0.4
Inclination (i)135.2°
Longitude of the node (Ω)181.7°
Periastron epoch (T)2418060
Argument of periastron (ω)
(secondary)
140°
Details
Mass 1.79 [7]   M
Radius 23 [7]   R
Luminosity 207 [5]   L
Surface gravity (log g)1.97 [7]   cgs
Temperature 4,467 [7]   K
Rotational velocity (v sin i)< 1.0 [8]  km/s
Other designations
h2 Puppis, CD−39°4128, CPD−39°2219, CCDM  J08140-4021A, GC  11215, GSC  07664-02482, HIP  40326, HR  3243, HD  69142, SAO  219635, WDS  J08140-4021A
Database references
SIMBAD data

HD 69142 is a class K1II-III [3] (orange bright giant) star in the constellation Puppis. Its apparent magnitude is 4.44 [2] and it is approximately 298 light years away based on parallax. [1]

It is a multiple star; the primary is a spectroscopic binary with a 2.55 year orbit with eccentricity 0.4, [9] and there is a more distant companion B at 59.4" and 9.5 magnitude. [10]

References

  1. 1 2 3 4 5 6 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
  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. Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN   54001336.
  5. 1 2 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
  6. Jancart, S. (2005). "Astrometric orbits of SB9 stars". Astronomy and Astrophysics. 442 (1): 365–380. arXiv: astro-ph/0507695 . Bibcode:2005A&A...442..365J. doi:10.1051/0004-6361:20053003. S2CID   15123997.
  7. 1 2 3 4 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: 555–562. arXiv: astro-ph/9911002 . Bibcode:1999A&A...352..555A. 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. arXiv: 1312.3474 . Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. S2CID   54046583. Vizier catalog entry
  9. Malkov, O. Yu.; Tamazian, V. S.; Docobo, J. A.; Chulkov, D. A. (2012). "Dynamical masses of a selected sample of orbital binaries". Astronomy & Astrophysics. 546: A69. Bibcode:2012A&A...546A..69M. doi: 10.1051/0004-6361/201219774 . Vizier catalog entry
  10. 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