U Coronae Borealis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Corona Borealis |
| Right ascension | 15h 18m 11.35252s |
| Declination | +31° 38′ 49.4159″ |
| Spectral type | B6 V + F8 III-IV |
| Other designations | |
| BD+32° 2569, HD 136175, HIP 74881, SAO 64619 | |
| Database references | |
| SIMBAD | data |
U Coronae Borealis (U CrB) is an Algol-type eclipsing binary star system in the constellation Corona Borealis. Its apparent magnitude varies between 7.66 and 8.79 over a period of 3.45 days. The component stars are a blue-white main sequence star of spectral type B6V and a cooler yellow-white subgiant star of spectral type F8III-IV.