| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Canis Major |
| Right ascension | 06h 44m 27.6052s[1] |
| Declination | −32° 51′ 30.1787″[1] |
| Apparent magnitude (V) | 12.29[2] |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | G7[2] |
| Apparent magnitude (J) | 11.368[1] |
| Apparent magnitude (G) | 12.5257[1] |
| Apparent magnitude (H) | 11.079[1] |
| Astrometry | |
| Radial velocity (Rv) | 35.48 km/s |
| Proper motion (μ) | RA: -19.389[3]mas/yr Dec.: -1.123[3]mas/yr |
| Parallax (π) | 2.6745±0.0218 mas[3] |
| Distance | 1,220 ± 10 ly (374 ± 3 pc) |
| Details[4] | |
| Mass | 0.993+0.034 −0.037 M☉ |
| Radius | 1.036+0.046 −0.065 R☉ |
| Luminosity | 0.90±0.15 L☉ |
| Temperature | 5400±100[2] K |
| Metallicity [Fe/H] | -0.08±0.11 dex |
| Rotation | 15.8±3.7d[5] |
| Age | 3.554±1.629[5] Gyr |
| Other designations | |
| Atakoraka,Gaia DR2 5583523425437258240,GSC 07091-01514,2MASS J06442760-3251302[1] | |
| Database references | |
| SIMBAD | data |
WASP-64 is a star about 1200 light-years away. It is a G7 classmain-sequence star, orbited by a planet WASP-64b. It is younger than the Sun at 3.6±1.6 billion years,[5] and it has a metal abundance similar to the Sun.[2] The star is rotating rapidly, being spun up by the giant planet in a close orbit.[5]
WASP-64 was namedAtakoraka in 2019 after theAtacora, the largest mountain range inTogo.[6] An imaging survey in 2017 failed to find any stellar companions.[7]
Atransitinghot Jupiterexoplanet orbiting WASP-64 was discovered byWASP in 2012.[4] The planetary equilibrium temperature is 1672+59
−63K,[4] while the measured dayside temperature is hotter at 1989+87
−88K.[8] Due to the close proximity of the planet to the parent star, orbital decay of WASP-64b, along withHATS-2, may be detectable in the near future.[9] WASP-64b was namedAgouto (afterMount Agou, the highest point of Togo which lies within the Atacora chain) in 2019 by amateur astronomers fromTogo as part of theNameExoWorlds contest.[6]
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Agouto | — | 0.0272±0.0012 | 1.573253+0.000028 −0.000027 | 0 | 89.6±3.2° | 1.244±0.036 RJ |
