S Coronae Borealis
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Corona Borealis |
| Right ascension | 15h 21m 23.9561s[1] |
| Declination | +31° 22′ 02.573″[1] |
| Apparent magnitude (V) | 5.80[2] |
| Characteristics | |
| Spectral type | M7e[3] |
| U−B color index | 0.36[1] |
| B−V color index | 1.71[1] |
| Variable type | Mira[4] |
| Astrometry | |
| Radial velocity (Rv) | -5.12[5] km/s |
| Proper motion (μ) | RA: -7.73[1] mas/yr Dec.: -13.03[1] mas/yr |
| Parallax (π) | 1.85 ± 1.19[1] mas |
| Distance | 433[6] pc |
| Absolute magnitude (MV) | -0.8±0.3[7] |
| Details | |
| Radius | 537-664[8] R☉ |
| Luminosity | 12,700[8] L☉ |
| Temperature | 2350-2600[8] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
S Coronae Borealis (S CrB) is a Mira-type long period variable star with a period of 360 days[9] in the constellation Corona Borealis. Its apparent magnitude varies between 5.8 and 14.1[4] Located around 1946 light-years distant, it shines with a luminosity approximately 16643 times that of the Sun and has a surface temperature of 3033 K.[10]
References
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