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]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
R Virginis
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Observation data
Epoch J2000 Equinox J2000 |
| Constellation |
Virgo |
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| Right ascension |
12h 38m 29.9338s[2] |
| Declination |
+06° 59′ 19.0256″[2] |
| Apparent magnitude (V) |
6.1 - 12.1[3] |
| Characteristics |
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| Spectral type |
M3.5-7e[4] |
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| U−B color index |
1.22[5] |
| B−V color index |
1.56[5] |
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| Variable type |
Mira[3] |
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| Astrometry |
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| 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) |
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| Details |
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| Mass | 2.18[7] M☉ |
| Radius | 130[8] R☉ |
| Surface gravity (log g) | 0.44[7] cgs |
| Temperature | 3,300[7]–3,800[8] K |
| Metallicity [Fe/H] | +0.49[7] dex |
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| Other designations |
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| 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 |
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| SIMBAD | data |
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