WASP-193b is a hot, transiting gas giant planet located approximately 1,232 light-years (378 pc) away[4] in the constellation of Hydra, orbiting the F-type star WASP-193.
[1][4] The discovery was subsequently confirmed photometrically by TRAPPIST-South, SPECULOOS-South, and the TESS mission, as well as through spectroscopic observations by HARPS and the CORALIE spectrograph of the Swiss 1.2-metre Leonhard Euler Telescope.
[1] Due to WASP-193b's unusually low mass (and hence a weak gravitational pull) for a planet its size, initial observations failed to detect radial velocity signals in the spectra of WASP-193.
[8] The apparent magnitude of the star is 12.134,[2] making it too faint to be seen from Earth by the naked eye,[9] but visible using a 60 mm aperture telescope.
[a] Due to its exposure to intense stellar radiation, the upper layers of the planet's atmosphere are being stripped away at a rate of 1.8×1010 – 4.3×1011 g per second, depending on the level of extreme ultraviolet flux.
Due to the large transit depth, extremely low density, and high equilibrium temperature of the planet, it is considered a prime target for transmission photometry observations by the James Webb Space Telescope.