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 |
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 |
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]