W Coronae Borealis (W CrB) is a Mira-type long period variable star in the constellation Corona Borealis. Its apparent magnitude varies between 7.8 and 14.3 over a period of 238 days.[5]
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Corona Borealis |
| Right ascension | 16h 15m 24.549s[2] |
| Declination | +37° 47′ 44.21″[2] |
| Apparent magnitude (V) | 7.8 - 14.3[3] |
| Characteristics | |
| Evolutionary stage | asymptotic giant branch |
| Spectral type | M2e-M5e[3] |
| Variable type | mira[3] |
| Astrometry | |
| Proper motion (μ) | RA: −9.527[2] mas/yr Dec.: -6.275[2] mas/yr |
| Parallax (π) | 0.4201 ± 0.0447 mas[2] |
| Distance | approx. 7,800 ly (approx. 2,400 pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
Constellation of Corona Borealis | |||||||||
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