WASP-62

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.

WASP-62 / Naledi

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
Naledi, CPD−64 484, TOI-102, TIC 149603524, WASP-62, TYC 8900-874-1, GSC 08900-00874, 2MASS J05483359-6359183[2]
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]

The WASP-62 planetary system^[8]

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