| 词条 | V Coronae Borealis |
| 释义 |
|constell= Corona Borealis |name= V Coronae Borealis{{Starbox image | image = | caption = V Coronae Borealis in optical light }} |type= C6,2e(N2e)[1] |ra= {{RA|15|49|31.31093}} [1] |dec= {{DEC|+39|34|17.9111}} [1] | names = BD+40° 2929, HD 141826, HIP 77501, SAO 64929 }}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.[3] 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.[4] References1. ^1 {{cite web |url =http://simbad.u-strasbg.fr/simbad/sim-id?Ident=V+CrB&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id|title = V Coronae Borealis|work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg|accessdate = 13 November 2014}} {{Stars of Corona Borealis}}{{var-star-stub}}2. ^1 {{cite web|url=http://www.aavso.org/vsx/index.php?view=detail.top&oid=10604 |title=V Coronae Borealis|author=VSX|date=4 January 2010|work=AAVSO Website|publisher=American Association of Variable Star Observers|accessdate=13 November 2014}} 3. ^{{cite journal | bibcode=2013A&A...555A.120G |title=Luminosities of carbon-rich asymptotic giant branch stars in the Milky Way |author = Guandalini, R. |author2 = Cristallo, S. |journal = Astronomy & Astrophysics |volume = 555 | id = A120 | pages = 7 |date=2013|arxiv = 1305.4203 |doi = 10.1051/0004-6361/201321225 }} 4. ^{{cite journal|author=McDonald, I.|author2=Zijlstra, A. A.|author3=Boyer, M. L.|date=2012|title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars|journal=Monthly Notices of the Royal Astronomical Society|volume=427|issue=1|pages=343–57|bibcode=2012MNRAS.427..343M|doi=10.1111/j.1365-2966.2012.21873.x|arxiv = 1208.2037 }} 7 : Corona Borealis|Mira variables|Objects with variable star designations|C-type stars|Durchmusterung objects|Henry Draper Catalogue objects|Hipparcos objects |
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