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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Virgo |
| Right ascension | 13h 18m 24.3s |
| Declination | -18° 18′ 40.3″ |
| Apparent magnitude (V) | 4.74 |
| Characteristics | |
| Spectral type | G5-6 V |
| U-B color index | 0.26 |
| B-V color index | 0.71 |
| V-R color index | 0.37 |
| R-I color index | 0.33 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | -8.2 km/s |
| Proper motion (μ) | RA: -1,069.90 mas/yr Dec.: -1,063.78 mas/yr |
| Parallax (π) | 117.35 ± 0.69 mas |
| Distance | 27.8 ± 0.2 ly (8.52 ± 0.05 pc) |
| Absolute magnitude (MV) | 5.07 |
| Details | |
| Mass | 0.96 M☉ |
| Radius | 0.94 R☉ |
| Surface gravity (log g) | 4.47 |
| Luminosity | 0.78 L☉ |
| Temperature | 5604 K |
| Metallicity | 93-95% |
| Rotation | <17 km/s. |
| Age | ? years |
| Other designations | |
61 Virginis is a star similar to the Sun, located about 27.8 light-years away in the constellation of Virgo.
There is some evidence that it may have a jovian planet, but seems not to have a nearby massive companion.1 A subsequent study also failed to find the large substellar companion (with 20 to 80 times the mass of Jupiter) or a Jupiter-class planet2, therefore it is a good candidate for possessing a family of terrestrial planets, with an orbit slightly less and a year slightly smaller than that of the Earth.
External links
- 61 Virginis at SolStation
- Alcyone emphemeris
References
- ^ Campbell et al, 1988, pages 904, 906, and 919
- ^ Cumming et al, 1999
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