BP Circini

BP Circini
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Circinus
Right ascension 14h 46m 41.97980s[1]
Declination −61° 27′ 42.9906″[1]
Spectral typeF2/F3II + B6.0[1]
Other designations
CD−60° 5320, HD 129708, HIP 72264, SAO 252879[1]

BP Circini is a star in the constellation Circinus. A Cepheid variable, its apparent magnitude ranges from 7.37 to 7.71 over 2.39810 days.[2] It is a yellow-white supergiant of spectral type F2 or F3II.[1] A spectroscopic binary, it has a 4.7 solar mass (M☉) companion that is a blue-white star of spectral type B6.[3]

References

  1. 1 2 3 4 5 "V* BP Cir". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 24 January 2014.
  2. ↑ BSJ (30 November 2013). "BP Circini". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 January 2014.
  3. ↑ Evans, Nancy Remage; Bond, Howard E.; Schaefer, Gail H.; Mason, Brian D.; Karovska, Margarita; Tingle, Evan (2013). "Binary Cepheids: Separations and Mass Ratios in 5M ⊙ Binaries". Astronomical Journal. 146 (4): 93, 10 pp. arXiv:1307.7123v1. Bibcode:2013AJ....146...93E. doi:10.1088/0004-6256/146/4/93.


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