R Virginis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 12h 38m 29.9338s |
| Declination | +06° 59′ 19.0256″ |
| Apparent magnitude (V) | 6.1 - 12.1 |
| Characteristics | |
| Spectral type | M3.5-7e |
| U−B color index | 1.22 |
| B−V color index | 1.56 |
| Variable type | Mira |
| Astrometry | |
| Radial velocity (Rv) | −26.60 km/s |
| Proper motion (μ) | RA: −32.283±0.248 mas/yr Dec.: 4.483±0.186 mas/yr |
| Parallax (π) | 1.8884±0.0946 mas |
| Distance | 1,730 ± 90 ly (530 ± 30 pc) |
| Details | |
| Mass | 2.18 M☉ |
| Radius | 130 R☉ |
| Surface gravity (log g) | 0.44 cgs |
| Temperature | 3,300–3,800 K |
| Metallicity [Fe/H] | +0.49 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 |
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. Its variable nature was discovered by Karl Ludwig Harding in 1809.