WASP-71
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 01h 57m 03.204s |
| Declination | +00° 45′ 31.88″ |
| Apparent magnitude (V) | 10.56 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F8 |
| B−V color index | 0.896 |
| Astrometry | |
| Radial velocity (Rv) | 7.690±0.004 km/s |
| Proper motion (μ) | RA: 23.418 mas/yr Dec.: −6.844 mas/yr |
| Parallax (π) | 2.8158±0.0265 mas |
| Distance | 1,160 ± 10 ly (355 ± 3 pc) |
| Details | |
| Mass | 1.53+0.07 −0.06 M☉ |
| Radius | 2.17+0.18 −0.10 R☉ |
| Surface gravity (log g) | 3.944+0.036 −0.050 cgs |
| Temperature | 6,050±100 K |
| Metallicity [Fe/H] | 0.15±0.07 dex |
| Rotational velocity (v sin i) | 7.8±0.3 km/s |
| Age | 3.6+1.6 −1.0 Gyr |
| Other designations | |
| Mpingo, BD+00 316, TOI-388, TIC 422655579, WASP-71, TYC 30-116-1, 2MASS J01570320+0045318 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
WASP-71, also named Mpingo, is an ordinary star with a close-orbiting planetary companion in the equatorial constellation of Cetus. With an apparent visual magnitude of 10.56, it is too faint to be visible to the naked eye. This star is located at a distance of 1,160 light-years based on parallax measurements, and is drifting further away with a heliocentric radial velocity of 7.7 km/s.
This is classified as an F-type star with a stellar classification of F8. It is more than double the diameter of the Sun with 1.5 times the Sun's mass. The star is younger than the Sun at about 3.6 billion years, yet is already evolving away from the main sequence. BD+00 316 is enriched in heavy elements, having 140% of the solar abundance of iron. Imaging surveys in 2015 and 2020 failed to find any stellar companions for BD+00 316.