WASP-20
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00h 20m 38.53504s |
| Declination | −23° 56′ 08.6028″ |
| Apparent magnitude (V) | 10.779 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F9V |
| Astrometry | |
| Radial velocity (Rv) | 1.26±0.85 km/s |
| Proper motion (μ) | RA: +1.352 mas/yr Dec.: −14.739 mas/yr |
| Parallax (π) | 3.4699±0.7095 mas |
| Distance | approx. 900 ly (approx. 290 pc) |
| Details | |
| Mass | 1.09 M☉ |
| Radius | 1.14 R☉ |
| Surface gravity (log g) | 4.36 cgs |
| Temperature | 5,940±100 K |
| Metallicity [Fe/H] | −0.008±0.060 dex |
| Rotational velocity (v sin i) | 4.75±0.51 km/s |
| Age | 3.6 Gyr |
| Other designations | |
| CD−24 102, TOI-194, TIC 211438925, WASP-20, TYC 6413-439-1, GSC 06413-00439, 2MASS J00203853-2356086 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
WASP-20, also known as CD-24 102, is a binary star system in the equatorial constellation Cetus, located at a distance of about 940 light-years (290 parsecs) from the Sun. The primary star is an F-type main sequence star and hosts one confirmed exoplanet, WASP-20b.