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Semiregular variable star in the constellation Corona Borealis From Wikipedia, the free encyclopedia
RS Coronae Borealis is a semiregular variable star located in the constellation Corona Borealis with a parallax of 2.93mas being a distance of 341 parsecs (1,110 ly).[1] It varies between magnitudes 8.7 to 11.6 over 332 days.[2] It is unusual in that it is a red star with a high proper motion (greater than 50 milliarcseconds a year).[4] Located around 1072 light-years distant, it shines with a luminosity approximately 1839 times that of the Sun and has a surface temperature of 3340 K.[5]
Observation data Epoch J2000.0[1] Equinox J2000.0[1] | |
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Constellation | Corona Borealis |
Right ascension | 15h 58m 30.764s[1] |
Declination | +36° 01′ 19.73″[1] |
Apparent magnitude (V) | 8.7-11.6[2] |
Spectral type | M7III |
Other designations | |