| Extrasolarplanet: | yes |
| K2-296b | |
| Apsis: | astron |
| Discoverer: | René Heller et al. |
| Discovered: | 2019 |
| Discovery Method: | Transit method |
| Alt Names: | EPIC 201238110 b, TIC 35019000 b, UCAC4 434-056021 b[1] |
| Semimajor: | 0.135 |
| Inclination: | 89.8° |
| Mass: | ~4.2 |
| Single Temperature: | (277K, equilibrium) |
| Star: | EPIC 201238110 |
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.
K2-296b's orbit, which has a semi-major axis of 0.135AU, is located in the habitable zone of the planetary system, meaning liquid water could exist on its surface. Its equilibrium temperature is estimated at 277K. 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.
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 0.058AU.