Kepler-1245 c
Kepler-1245 c is a super-Earth orbiting Kepler-1245 in the constellation Lyra. It lies about 2,629 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-1245 c?
Kepler-1245 c has a radius of 1.44 times that of Earth.
Is Kepler-1245 c in the Habitable Zone?
The position of Kepler-1245 c relative to the habitable zone of Kepler-1245 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-1245: 0.540–1.290 AU (conservative: 0.684–1.223 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 ›
Orbit and Year Length
A year on Kepler-1245 c — one full orbit around Kepler-1245 — lasts 2.94 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-1245 c Discovered?
Kepler-1245 c was discovered in 2016 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-1245 c?
Kepler-1245 c is 2,628.6 light-years (805.9 parsecs) from Earth. Light arriving here tonight left the planet about 2,629 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 46,263,360 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-1245 c scores 0.29, ranking #2,017 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-1245
Kepler-1245
- Surface temperature
- 5,306 K (Sun: 5,772 K)
- Mass
- 0.86 M☉
- Radius
- 0.83 R☉
- Age
- 4.6 billion years (Sun: 4.6)
The Kepler-1245 Planetary System
Kepler-1245 c is one of 2 known planets in the Kepler-1245 system. Its siblings:
- Kepler-1245 b (Super Earth)
Kepler-1245 c — Complete Data
| Radius | 1.440 Earth radii (0.128 Jupiter radii) |
|---|---|
| Orbital period | 2.94 days |
| Earth Similarity Index | 0.29 |
| Distance from Earth | 2,628.6 light-years (805.9 parsecs) |
| Constellation | Lyra |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2016 |
Data: NASA Exoplanet Archive, last updated 2016-05-06. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-1245 c
Is Kepler-1245 c habitable?
Kepler-1245 c is not known to orbit within the habitable zone of Kepler-1245, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is Kepler-1245 c?
Kepler-1245 c is about 2,629 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 46,263,360 years to get there.
How big is Kepler-1245 c compared to Earth?
Kepler-1245 c has 1.44 times the radius of Earth.
How long is a year on Kepler-1245 c?
One orbit around Kepler-1245 takes 2.9 Earth days — short enough that 124 of its years would fit into one Earth year.
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