U Coronae Borealis

Not to be confused with Upsilon Coronae Borealis.

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.^[3] 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.^[4]

U Coronae Borealis

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Corona Borealis
Right ascension	15h 18m 11.35252s[1]
Declination	+31° 38′ 49.4159″[1]
Spectral type	B6 V + F8 III-IV[1]
Other designations
BD+32° 2569, HD 136175, HIP 74881, SAO 64619[1]
Database references
SIMBAD	data

A visual band light curve for U Coronae Borealis, adapted from et al. (2003)^[2]