Astronomers have claimed that a planet discovered in 2010 is the hottest ever found in the universe, where the temperature is a scorching 3,200ºC.
The scorching temperature of exoplanet, WASP-33b also known as HD15082, is explained by its close orbit around its star, itself one of the hottest planet-hosting stars at 7,160ºC; it’s 380 light years away in the constellation of Andromeda, the Daily Mail reported.
In fact, the astronomers were first alerted to WASP-33b’s existence in 2006, after observing regularly timed dimmings of its parent star. This was caused by the planet, four-and-a-half times the size of Jupiter, orbiting its star at less than 7 per cent the distance of Mercury from the Sun.
This is not to be scoffed at considering the star’s temperature of 7,160ºC dwarfs the sun’s 5,600ºC. WASP-33b completes an orbit every 29.5 hours, say the astronomers.
A study led by Alexis Smith of Keele University in Staffordshire, and reported in New Scientist, discovered WASP-33b’s thermal emission using an infrared camera on the William Herschel Telescope in the Canary Islands.
It’s temperature is 900ºC hotter than what was formerly the hottest known planet in the Milky Way Galaxy — WASP-12b.
The WASP-12b is so close to its Sun-like star that it is superheated to 2,300ºC and stretched into a football shape by enormous tidal forces. It completes an orbit every 1.1days.