R Corvi

R Corvi (R Crv) is a Mira variable star in the constellation Corvus, which ranges from a magnitude of 6.7 to 14.4 with a period of approximately 317 days.^[3] In the sky it appears close to Gamma Corvi and can be seen in the same binocular field.^[4] Extrapolating its luminosity from its period of 317 days yields a distance of 810 parsecs.^[5]

R Crv

The visual band light curve of R Corvi, from AAVSO data[1]
Observation data Epoch J2000      Equinox J2000
Constellation	Corvus
Right ascension	12h 19m 37.8727s[2]
Declination	−19° 15′ 21.877″[2]
Apparent magnitude (V)	6.70[2]
Characteristics
Spectral type	M4.5-9:e[2]
B−V color index	3.70[2]
Variable type	Mira[3]
Astrometry
Radial velocity (Rv)	-22.00[2] km/s
Proper motion (μ)	RA: -1.20[2] mas/yr Dec.: -10.03[2] mas/yr
Distance	810 pc
Other designations
BD-18° 3367, HD 107199, HIP 60106, SAO 157211.
Database references
SIMBAD	data