R Virginis
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Virgo |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 6.1 - 12.1[3] |
| Characteristics | |
| Spectral type | M3.5-7e[4] |
| U−B Template:Engvar | 1.22[5] |
| B−V Template:Engvar | 1.56[5] |
| Variable type | Mira[3] |
| Astrometry | |
| Radial velocity (Rv) | −26.60[6] km/s |
| Proper motion (μ) | RA: Script error: No such module "val".[2] mas/yr Dec.: Script error: No such module "val".[2] mas/yr |
| Parallax (π) | 1.8884±0.0946 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Details | |
| Mass | 2.18[7] Template:Solar mass |
| Radius | 130[8] Template:Solar radius |
| Surface gravity (log g) | 0.44[7] cgs |
| Temperature | 3,300[7]–3,800[8] K |
| Metallicity [Fe/H] | +0.49[7] dex |
| Metallicity [Fe/H] | {{{metal_fe2}}} 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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R Virginis is a Mira variable in the constellation Virgo. Located approximately Script error: No such module "convert". 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]
References
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