KQ Puppis

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KQ Puppis
Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 07h 33m 47.96383s[1]
Declination −14° 31′ 26.0026″[1]
Apparent magnitude (V) +3.19[2]
Spectral type M2Iab/B0Ve[3]
U−B color index +0.29[2]
B−V color index +0.41[2]
Variable type LC[4]
Radial velocity (Rv) +22[5] km/s
Proper motion (μ) RA: -6.98[1] mas/yr
Dec.: +4.82[1] mas/yr
Parallax (π) 2.12 ± 0.45[1] mas
Distance 1,400[6] pc
Mass 13-20/17[6] M
Radius 570/4.35[6] R
Luminosity 59,800/13,800[6] L
Temperature ?/30,000[6] K
Other designations
KQ Pup, GSC 05409-01859, HD 60414, HD 60415, HIP 36773, HR 2902, NGC 2422 9, SAO 153072
Database references

KQ Puppis (KQ Pup) is a spectroscopic binary star in the constellation Puppis. A red supergiant star and a hot main sequence star orbit each other every 9,742 days.[6]


  1. ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ a b c 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: 0. Bibcode:2002yCat.2237....0D. 
  3. ^ Gonz�Lez-Riestra, R.; Rossi, C.; Viotti, R. F. (2003). "First far?UV observations of KQ Puppis with FUSE". Astronomy and Astrophysics 399 (2): 681. Bibcode:2003A&A...399..681G. doi:10.1051/0004-6361:20021830. 
  4. ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S 1: 02025. Bibcode:2009yCat....102025S. 
  5. ^ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Washington: 0. Bibcode:1953GCRV..C......0W. 
  6. ^ a b c d e f Rossi, C.; Altamore, A.; Baratta, G. B.; Friedjung, M.; Viotti, R. (1992). "The spectrum of the VV Cephei star KQ Puppis (Boss 1985). III - A possible model". Astronomy and Astrophysics (ISSN 0004-6361) 256: 133. Bibcode:1992A&A...256..133R.