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K2-121 b
Orbiting K2-121, discovered in 2017 (7522) by K2 via the Transit method.
Planet
| Radius | 7.16 R⊕ |
| Mass | 51.00 M⊕ |
| Orbital period | 5.19 Earth days (~0.0 Earth years) |
| Orbital eccentricity | Unknown |
| Equilibrium temperature | 716 K (443 °C) |
Host star — K2-121
| Temperature | 4526 K (4253 °C) |
| Radius | 0.68 R☉ |
| Mass | 0.71 M☉ |
Location
| Distance from Earth | 169.4 pc (~553 light-years) |
| Right ascension / Declination | 126.9367 / 17.5793 |
Last refreshed 2026-09-13 from NASA's Exoplanet Archive.