HAT-P-29, also known as Muspelheim since 2019 (as part of the IAU's NameExoWorlds project),[6] is a star about 1,040 light-years (320 parsecs) away.
A very faint 19th-magnitude stellar companion was detected in 2016 at a projected separation of 3.290±0.002″,[2] but Gaia DR2 astrometry suggests that this is an unrelated background object.
[7] In 2011 a transiting hot Jupiter planet, HAT-P-29b, was detected on a mildly eccentric orbit.
[8] The planetary orbit is likely aligned with the equatorial plane of the star, with a misalignment equal to 26±16 degrees.
[9] In 2018, a transit-timing variation survey indicated additional planets with masses exceeding approximately half of Earth are absent in the system.