HD 69142

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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[1] mas
Distance 300 ± 10 ly
(91 ± 4 pc)
Absolute magnitude (MV) -0.38[5]
Orbit[6]
Primary h2 Puppis Aa
Companion h2 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[edit]

  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. 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 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 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. Bibcode:2012AstL...38..331A. arXiv:1108.4971Freely accessible. doi:10.1134/S1063773712050015.  Vizier catalog entry
  6. ^ Jancart, S. (2005). "Astrometric orbits of SB9 stars". Astronomy and Astrophysics. 442 (1): 365–380. Bibcode:2005A&A...442..365J. arXiv:astro-ph/0507695Freely accessible. doi:10.1051/0004-6361:20053003. 
  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. Bibcode:1999A&A...352..555A. arXiv:astro-ph/9911002Freely accessible.  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:1312.3474Freely accessible. doi:10.1051/0004-6361/201220762.  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