WASP-23b

WASP-23b is a hot Jupiter class exoplanet that orbits around the star WASP-23, a K-type main sequence star that is located 676 light years from Earth in the constellation of Puppis. It is similar to Jupiter in its physical parameters with a mass of 0.88 Jupiter masses and a radius of 0.96 Jupiter radii. It orbits at a distance of 0.0376 AU taking 2.94 days to complete an orbit. The orbit has an eccentricity of 0.062 and an inclination of 88.36°.^[1]

WASP-23b

Discovery
Discovered by	Triaud et al. 2011
Discovery date	2010
Detection method	Transit
Orbital characteristics
Semi-major axis	0.0376
Eccentricity	0.062
Orbital period (sidereal)	2.9444256 d
Inclination	88.39°
Star	WASP-23
Physical characteristics
Mean diameter	0.962 RJ
Mass	0.88 MJ
Mean density	1.17 g/cm3

Discovery

WASP-23b was discovered by the WASP-south transit survey (WASP) via the transit method in the year 2010 by Triaud et al. 2011. The detection was confirmed photometrically and spectroscopically by the Swiss Euler telescope. Spectra were obtained during the transit of WASP-23b with the HARPS spectrograph and the Rossiter-McLaughlin effect was detected despite its small amplitude.^[2]