K2-296b (more commonly referred to as EPIC 201238110 b) is a potentially habitable planet discovered by Heller et al. in 2019, orbiting the M-dwarf star EPIC 201238110.
Habitability K2-296b's orbit, which has a semi-major axis of , is located in the habitable zone of the planetary system, meaning liquid water could exist on its surface. Its equilibrium temperature is estimated at . The planet is likely tidally locked to its parent star. The Habitable Worlds Catalog, issued by the Planetary Habitability Laboratory, classes the planet as a warm superterran, near the inner edge of the optimistic habitable zone.
Host star The host star, EPIC 201238110, is a red dwarf with a mass of 0.41 and a radius of 0.37 . It has a surface temperature of 3588 K or 3772 K, and a luminosity of 0.0254 . There is another transiting candidate planet in the system called EPIC 201238110 c, which, if confirmed, would be a hot (427 K) mini-Neptune with a radius of 2.76 and a mass of 8.0 , revolving around the star once every 7.9 days at a distance of .
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