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WASP-49

WASP-49 is a binary star system about 636 light-years away in the constellation Lepus. The two stars are separated by 443 AU. The primary is a G-type main-sequence star, with a surface temperature of 5,600 K. WASP-49 is depleted of heavy elements relative to the Sun. It has a metallicity Fe/H index of –0.23, meaning it has 59% the iron level of the Sun.

Planetary system
In 2012, one exoplanet, designated WASP-49b, was discovered around the primary star by a team led by Monika Lendl. The sodium layer around WASP-49b could be due to a tidally-heated Io-like exomoon. In October 2024, a 5-year study was published indicating that the sodium envelope most likely comes from a distinct body orbiting WASP-49b rather than the star or the planet, although the exact dynamics of the envelope remains to be settled. ==References==
Source: Wikipedia ↗
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