WASP-62, formally named Naledi, is a single star about 573 light-years (176 parsecs) away. It is an F class main-sequence star, orbited by a planet, WASP-62b. The age of WASP-62 is much younger than the Sun at 0.8±0.6 billion years,[4] and it has a metal abundance similar to the Sun.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 05h 48m 33.59333s[1] |
| Declination | −63° 59′ 18.3884″[1] |
| Apparent magnitude (V) | 10.21[2] |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | F |
| Apparent magnitude (B) | 10.73[2] |
| Apparent magnitude (G) | 10.077±0.003[1] |
| Apparent magnitude (R) | 9.93[2] |
| Astrometry | |
| Radial velocity (Rv) | 15.24±0.25[1] km/s |
| Proper motion (μ) | RA: -15.439 mas/yr[1] Dec.: 26.151 mas/yr[1] |
| Parallax (π) | 5.6910 ± 0.0113 mas[1] |
| Distance | 573 ± 1 ly (175.7 ± 0.3 pc) |
| Details[3] | |
| Mass | 1.250±0.050 M☉ |
| Radius | 1.280±0.050 R☉ |
| Surface gravity (log g) | 4.45±0.1 cgs |
| Temperature | 6230±80 K |
| Metallicity [Fe/H] | 0.040±0.060 dex |
| Rotational velocity (v sin i) | 8.70±0.40 km/s |
| Age | 2.60+0.50 −0.70 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Nomenclature
The designation WASP-62 indicates that this was the 62nd star found to have a planet by the Wide Angle Search for Planets.
In December 2019, WASP-62 was named Naledi and its planet was named Krotoa by amateur astronomers from South Africa as part of the second NameExoWorlds campaign.[5][6]
Planetary system
A transiting hot Jupiter exoplanet orbiting WASP-62 was discovered by WASP in 2012.[7] The planet's equilibrium temperature is 1440±30 K, but the measured average temperature is colder at 1329.6±44.8 K.[8] In 2020, a transmission spectrum indicated the atmosphere of WASP-62b is free of clouds. It contains sodium and possibly silicon hydrides.[9]
The planetary orbit is slightly misaligned to the equatorial plane of the star, with the misalignment angle equal to 19.4+5.1
−4.9°.[4]
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Krotoa | 0.562±0.042 MJ | 0.05672+0.00075 −0.00079[3] | 4.4119530(30) | <0.075[3] | 88.30+0.90 −0.60° | 1.390±0.060 RJ |