EPIC 212297394 b
EPIC 212297394 b is a super-Earth orbiting EPIC 212297394 in the constellation Virgo. It lies about 1,365 light-years from Earth and was discovered in 2019 using the transit method.
How Big Is EPIC 212297394 b?
EPIC 212297394 b has a radius of 1.48 times that of Earth.
Is EPIC 212297394 b in the Habitable Zone?
The position of EPIC 212297394 b relative to the habitable zone of EPIC 212297394 cannot be precisely determined from the available orbital data.
Habitable zone of EPIC 212297394: 0.498–1.195 AU (conservative: 0.630–1.133 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 EPIC 212297394 b
The equilibrium temperature of EPIC 212297394 b is about 1,149 K (876 °C) — hot enough to melt many metals. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
A year on EPIC 212297394 b — one full orbit around EPIC 212297394 — lasts 2.29 Earth days, shorter than Mercury's 88-day year.
How Was EPIC 212297394 b Discovered?
EPIC 212297394 b was discovered in 2019 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 EPIC 212297394 b?
EPIC 212297394 b is 1,364.6 light-years (418.4 parsecs) from Earth. Light arriving here tonight left the planet about 1,365 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 24,016,960 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. EPIC 212297394 b scores 0.28, ranking #2,100 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: EPIC 212297394
EPIC 212297394
- Surface temperature
- 5,171 K (Sun: 5,772 K)
- Mass
- 0.83 M☉
- Radius
- 0.80 R☉
The EPIC 212297394 Planetary System
EPIC 212297394 b is one of 2 known planets in the EPIC 212297394 system. Its siblings:
- EPIC 212297394 c (Mini Neptune)
EPIC 212297394 b — Complete Data
| Radius | 1.480 Earth radii (0.132 Jupiter radii) |
|---|---|
| Orbital period | 2.29 days |
| Equilibrium temperature | 1,149 K (876 °C) |
| Earth Similarity Index | 0.28 |
| Distance from Earth | 1,364.6 light-years (418.4 parsecs) |
| Constellation | Virgo |
| Discovery method | Transit |
| Discovery facility | K2 |
| Discovery year | 2019 |
Data: NASA Exoplanet Archive, last updated 2021-08-30. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About EPIC 212297394 b
Is EPIC 212297394 b habitable?
EPIC 212297394 b is not known to orbit within the habitable zone of EPIC 212297394, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is EPIC 212297394 b?
EPIC 212297394 b is about 1,365 light-years from Earth in the constellation Virgo. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 24,016,960 years to get there.
How big is EPIC 212297394 b compared to Earth?
EPIC 212297394 b has 1.48 times the radius of Earth.
How long is a year on EPIC 212297394 b?
One orbit around EPIC 212297394 takes 2.3 Earth days — short enough that 160 of its years would fit into one Earth year.
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