HD 85512
HD 85512 is a solitary K-type main-sequence star 36.8 light-years (11.3 parsecs) away in the constellation Vela. It is about 1 billion years older than the Sun. It is extremely chromospherically inactive, only slightly more active than Tau Ceti. It exhibits a long-term variability and was thought to host one low-mass planet, although this is now doubtful.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Vela |
| Right ascension | 09h 51m 07.05180s |
| Declination | −43° 30′ 10.0237″ |
| Apparent magnitude (V) | 7.66 |
| Characteristics | |
| Spectral type | K6V |
| U−B color index | 1.12 |
| B−V color index | 1.18 |
| V−R color index | 0.71 |
| Astrometry | |
| Radial velocity (Rv) | −9.78±0.12 km/s |
| Proper motion (μ) | RA: 461.603 mas/yr Dec.: −471.880 mas/yr |
| Parallax (π) | 88.6737 ± 0.0173 mas |
| Distance | 36.782 ± 0.007 ly (11.277 ± 0.002 pc) |
| Absolute magnitude (MV) | 7.39 |
| Details | |
| Mass | 0.69 M☉ |
| Radius | 0.533 ± 0.04 R☉ |
| Luminosity (bolometric) | 0.126 ± 0.008 L☉ |
| Surface gravity (log g) | 4.604±0.017 cgs |
| Temperature | 4404±10 K |
| Metallicity | ([Si/H] dex) -0.02 |
| Metallicity [Fe/H] | -0.28 dex |
| Rotation | 47.13 ± 6.98 |
| Rotational velocity (v sin i) | 2.194±0.118 km/s |
| Age | 5.61 ± 0.61 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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