Kepler-92 c
Kepler-92 c is a mini-Neptune orbiting Kepler-92 in the constellation Lyra. It lies about 1,559 light-years from Earth and was discovered in 2013 using the transit method.
How Big Is Kepler-92 c?
Kepler-92 c has a radius of 2.60 times that of Earth. Its mass is 6.1 times that of Earth.
Is Kepler-92 c in the Habitable Zone?
The position of Kepler-92 c relative to the habitable zone of Kepler-92 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on Kepler-92 c — one full orbit around Kepler-92 — lasts 26.7 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-92 c Discovered?
Kepler-92 c was discovered in 2013 using the transit method, with observations from Kepler.
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 Kepler-92 c?
Kepler-92 c is 1,559.0 light-years (478.0 parsecs) from Earth. Light arriving here tonight left the planet about 1,559 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 27,438,400 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. Kepler-92 c scores 0.24, ranking #3,340 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-92
Kepler-92
- Mass
- 1.21 M☉
- Radius
- 1.70 R☉
The Kepler-92 Planetary System
Kepler-92 c is one of 3 known planets in the Kepler-92 system. Its siblings:
- Kepler-92 b (Super Earth)
- Kepler-92 d (Mini Neptune)
Kepler-92 c — Complete Data
| Radius | 2.600 Earth radii (0.232 Jupiter radii) |
|---|---|
| Mass | 6.10 Earth masses (0.019 Jupiter masses) |
| Orbital period | 26.72 days |
| Earth Similarity Index | 0.24 |
| Distance from Earth | 1,559.0 light-years (478.0 parsecs) |
| Constellation | Lyra |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2013 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-92 c
Is Kepler-92 c habitable?
Kepler-92 c is not known to orbit within the habitable zone of Kepler-92, and as a mini-Neptune it is an unlikely candidate for life as we know it.
How far away is Kepler-92 c?
Kepler-92 c is about 1,559 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 27,438,400 years to get there.
How big is Kepler-92 c compared to Earth?
Kepler-92 c has 2.60 times the radius of Earth and about 6.1 times its mass.
How long is a year on Kepler-92 c?
One orbit around Kepler-92 takes 26.7 Earth days — short enough that 14 of its years would fit into one Earth year.
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