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.[7]
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 | |
Radius | 88[2] R☉ |
Luminosity | 839[2] L☉ |
Temperature | 3,320[2] K |
Other designations | |
Database references | |
SIMBAD | data |