T Coronae Borealis
Recurrent nova in the constellation Corona Borealis / From Wikipedia, the free encyclopedia
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Not to be confused with Tau Coronae Borealis.
T Coronae Borealis (T CrB), nicknamed the Blaze star, is a recurrent nova in the constellation Corona Borealis.[11] It was first discovered in outburst in 1866 by John Birmingham,[12] although it had been observed earlier as a 10th magnitude star.[13] It may have been observed in 1217 and in 1787 as well.[14][15] It is expected to undergo an outburst again in 2024.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Corona Borealis |
Right ascension | 15h 59m 30.1622s[1] |
Declination | 25° 55′ 12.613″[1] |
Apparent magnitude (V) | 2.0–10.8[2] |
Characteristics | |
Evolutionary stage | Red giant + white dwarf |
Spectral type | M3III+p[3] |
Variable type | recurrent nova[2] |
Astrometry | |
Radial velocity (Rv) | −27.79[4] km/s |
Proper motion (μ) | RA: −4.220[5] mas/yr Dec.: 12.364[5] mas/yr |
Parallax (π) | 1.2127 ± 0.0488 mas[5] |
Distance | 806+34 −30[6] pc |
Orbit | |
Period (P) | 227.8 d[7] |
Semi-major axis (a) | 0.54 AU[6] |
Eccentricity (e) | 0.0[7] |
Inclination (i) | 67[8]° |
Details | |
Red giant | |
Mass | 1.12[6] M☉ |
Radius | 75[8] R☉ |
Luminosity | 655[9] L☉ |
Surface gravity (log g) | 2.0[10] cgs |
Temperature | 3,600[10] K |
White dwarf | |
Mass | 1.37[6] M☉ |
Luminosity | ~100[8] L☉ |
Other designations | |
Database references | |
SIMBAD | data |
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