Mira-type long period variable star in the constellation Corona Borealis
V Coronae Borealis
V Coronae Borealis in optical light
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation
Corona Borealis
Right ascension
15h 49m 31.31093s[1]
Declination
+39° 34′ 17.9111″ [1]
Spectral type
C6,2e(N2e)[2]
Other designations
BD+40° 2929, HD 141826, HIP 77501, SAO 64929
The visual band light curve of V Coronae Borealis, from AAVSO data[3]
V Coronae Borealis (V CrB) is a Mira-type long period variable star and carbon star in the constellation Corona Borealis. Its apparent magnitude varies between 6.9 and 12.6 over a period of 357 days[2]
V Coronae Borealis is too far from Earth for its parallax to be measured effectively. Basing on a period of 357 days, the absolute magnitude of V Coronae Borealis has been calculated to be -4.62.[4] It was estimated to around 8810 light-years distant in a 2012 paper, shining with a luminosity approximately 102831 times that of the Sun and has a surface temperature of 2877 K.[5]
^ ab"V Coronae Borealis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 13 November 2014.
^ abVSX (4 January 2010). "V Coronae Borealis". AAVSO Website. American Association of Variable Star Observers. Retrieved 13 November 2014.
^Cite error: The named reference aavso was invoked but never defined (see the help page).
^Guandalini, R.; Cristallo, S. (2013). "Luminosities of carbon-rich asymptotic giant branch stars in the Milky Way". Astronomy & Astrophysics. 555: 7. arXiv:1305.4203. Bibcode:2013A&A...555A.120G. doi:10.1051/0004-6361/201321225. S2CID 54918450. A120.
^McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. S2CID 118665352.
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