HD 69142

Today, HD 69142 is a topic of great relevance and interest to many people around the world. Since ancient times, HD 69142 has been the object of study, debate and reflection, and its impact covers various aspects of daily life. Currently, the importance of HD 69142 has been enhanced by the rise of new technologies, which have opened new perspectives of analysis and understanding on this topic. In this article, we will explore different aspects of HD 69142, from its origin to its relevance today, through its implications in different areas of social, cultural, economic and political life.

This article is about h2 Puppis. For other stars with this Bayer designation, see h Puppis. For H Puppis, see HD 53811.
HD 69142
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]
Distance300 ± 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
Mass1.79[7] M☉
Radius23[7] R☉
Luminosity207[5] L☉
Surface gravity (log g)1.97[7] cgs
Temperature4,467[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
SIMBADdata

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. ^ a b c d e f 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. ^ 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 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. ^ a b 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. ^ a b c d 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