WASP-33b

In 2010, the SuperWASP project announced the discovery of an extrasolar planet orbiting the star HD 15082.

The discovery was made by detecting the transit of the planet as it passes in front of its star, an event that occurs every 1.22 days.

[8][9] This was later confirmed using high-resolution spectroscopy technique with the data taken by High Dispersion Spectrograph mounted on the 8.2 m Subaru telescope.

[10] The detection titanium oxide was not be able to be reproduced with the higher quality data obtained by 2020 although with different setting of observations.

Only upper limit of titanium oxide volume mixing rate equal to 1 ppb can be obtained.

WASP-33b has strong winds in its atmosphere, similar to Venus, shifting the hottest spot 28.7±7.1 degrees to the west.

[3] The atmospheric escape driven by hydrogen Balmer line absorption is relatively modest, totaling about one to ten Earth masses per billion years.

First, the distorted shape of the star makes its gravitational field deviate from the usual Newtonian inverse-square law.

It has been argued that the oblateness of HD 15082 could be measured at a percent accuracy from a 10-year analysis of the time variations of the planet's transits.

Atmosphere of WASP-33b was detected by monitoring light as the planet passed behind its star (top)—higher temperatures result in the low stratosphere due to molecules absorbing radiation from the star (right)—lower temperatures at higher altitudes would result if there were no stratosphere (left) [ 8 ]