K2-62 c
K2-62 c is a super-Earth orbiting K2-62 in the constellation Aquarius. It lies about 367 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is K2-62 c?
K2-62 c has a radius of 1.99 times that of Earth.
Is K2-62 c in the Habitable Zone?
The position of K2-62 c relative to the habitable zone of K2-62 cannot be precisely determined from the available orbital data.
Habitable zone of K2-62: 0.331–0.820 AU (conservative: 0.420–0.778 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Temperature on K2-62 c
The equilibrium temperature of K2-62 c is about 495 K (222 °C) — hotter than anywhere on Earth. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C. It receives 14.30 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on K2-62 c — one full orbit around K2-62 — lasts 16.2 Earth days, shorter than Mercury's 88-day year.
How Was K2-62 c Discovered?
K2-62 c was discovered in 2016 using the transit method, with observations from K2.
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is K2-62 c?
K2-62 c is 366.8 light-years (112.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1660. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 6,455,680 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. K2-62 c scores 0.34, ranking #809 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: K2-62
K2-62
- Surface temperature
- 4,455 K (Sun: 5,772 K)
- Mass
- 0.67 M☉
- Radius
- 0.70 R☉
The K2-62 Planetary System
K2-62 c is one of 2 known planets in the K2-62 system. Its siblings:
- K2-62 b (Mini Neptune)
K2-62 c — Complete Data
| Radius | 1.990 Earth radii (0.178 Jupiter radii) |
|---|---|
| Orbital period | 16.20 days |
| Equilibrium temperature | 495 K (222 °C) |
| Stellar irradiation | 14.30× Earth |
| Earth Similarity Index | 0.34 |
| Distance from Earth | 366.8 light-years (112.5 parsecs) |
| Constellation | Aquarius |
| Discovery method | Transit |
| Discovery facility | K2 |
| Discovery year | 2016 |
Data: NASA Exoplanet Archive, last updated 2025-09-17. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About K2-62 c
Is K2-62 c habitable?
K2-62 c is not known to orbit within the habitable zone of K2-62, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is K2-62 c?
K2-62 c is about 367 light-years from Earth in the constellation Aquarius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 6,455,680 years to get there.
How big is K2-62 c compared to Earth?
K2-62 c has 1.99 times the radius of Earth.
How long is a year on K2-62 c?
One orbit around K2-62 takes 16.2 Earth days — short enough that 23 of its years would fit into one Earth year.
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