WASP-64
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Canis Major |
| Right ascension | 06h 44m 27.60507s |
| Declination | −32° 51′ 30.1793″ |
| Apparent magnitude (V) | 12.29 |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | G7 |
| Apparent magnitude (J) | 11.368 |
| Apparent magnitude (H) | 11.079 |
| Apparent magnitude (K) | 10.956 |
| Astrometry | |
| Radial velocity (Rv) | 34.40±1.23 km/s |
| Proper motion (μ) | RA: -19.265 mas/yr Dec.: -1.072 mas/yr |
| Parallax (π) | 2.7721±0.0102 mas |
| Distance | 1,177 ± 4 ly (361 ± 1 pc) |
| Details | |
| Mass | 1.004±0.028 M☉ |
| Radius | 1.058±0.025 R☉ |
| Luminosity | 0.95±0.13 L☉ |
| Surface gravity (log g) | 4.4±0.15 cgs |
| Temperature | 5550±150 K |
| Metallicity [Fe/H] | −0.08±0.11 dex |
| Rotation | 15.8±3.7 d |
| Rotational velocity (v sin i) | 3.4±0.8 km/s |
| Age | 3.554±1.629 Gyr |
| Other designations | |
| Atakoraka, TOI-473, TIC 52640302, WASP-64, GSC 07091-01514, 2MASS J06442760-3251302 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
WASP-64 is a star about 1,177 light-years away. It is a G7 class main-sequence star, orbited by a planet WASP-64b. It is younger than the Sun at 3.6±1.6 billion years, and it has a metal abundance similar to the Sun. The star is rotating rapidly, being spun up by the giant planet in a close orbit.
WASP-64 was named Atakoraka in 2019 after the Atacora, the largest mountain range in Togo. While an imaging survey in 2017 failed to find any stellar companions, a 2019 survey using Gaia DR2 data found WASP-64 to be the secondary star in a binary system, with a wide separation of 24.2 arcseconds or 9,058 AU. The primary star is designated TYC 7091-1288-1, and can also be called WASP-64 A, with the planet host being WASP-64 B.