R Virginis

R Virginis is a Mira variable in the constellation Virgo. Located approximately 530 parsecs (1,700 ly) distant, it varies between magnitudes 6.1 and 12.1 over a period of approximately 146 days.^[3] Its variable nature was discovered by Karl Ludwig Harding in 1809.^[9]

ConstellationVirgo

Right ascension12^h 38^m 29.9338^s[2]

Declination+06° 59′ 19.0256″^[2]

Apparentmagnitude(V)6.1 - 12.1^[3]

Quick facts Observation data Epoch J2000 Equinox J2000, Constellation ...

R Virginis

The visual band light curve of R Virginis, from AAVSO data[1]
Observation data Epoch J2000      Equinox J2000
Constellation	Virgo
Right ascension	12h 38m 29.9338s[2]
Declination	+06° 59′ 19.0256″[2]
Apparent magnitude (V)	6.1 - 12.1[3]
Characteristics
Spectral type	M3.5-7e[4]
U−B color index	1.22[5]
B−V color index	1.56[5]
Variable type	Mira[3]
Astrometry
Radial velocity (Rv)	−26.60[6] km/s
Proper motion (μ)	RA: −32.283±0.248[2] mas/yr Dec.: 4.483±0.186[2] mas/yr
Parallax (π)	1.8884±0.0946 mas[2]
Distance	1,730 ± 90 ly (530 ± 30 pc)
Details
Mass	1.19[7] M☉
Radius	130[8] R☉
Surface gravity (log g)	0.34[7] cgs
Temperature	3,270[7]–3,800[8] K
Metallicity [Fe/H]	+0.29[7] dex
Other designations
R Virginis, TYC 295-2-1, AG+07°1658, HD 109914, BD+07°2561, DO 3264, HIP 61667, GC 17212, HR 4808, RAFGL 4157, SAO 119509
Database references
SIMBAD	data

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