Kepler-1143 c
Kepler-1143 c is a sub-Neptune orbiting Kepler-1143 in the constellation Lyra. It lies about 1,811 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-1143 c?
Kepler-1143 c has a radius of 3.60 times that of Earth.
Is Kepler-1143 c in the Habitable Zone?
The position of Kepler-1143 c relative to the habitable zone of Kepler-1143 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-1143: 0.460–1.110 AU (conservative: 0.583–1.052 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-1143 c — one full orbit around Kepler-1143 — lasts 210.6 Earth days, between the years of Mercury (88 days) and Earth (365 days).
How Was Kepler-1143 c Discovered?
Kepler-1143 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-1143 c?
Kepler-1143 c is 1,810.8 light-years (555.2 parsecs) from Earth. Light arriving here tonight left the planet about 1,811 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 31,870,080 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-1143 c scores 0.56, ranking #184 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-1143
Kepler-1143
- Surface temperature
- 5,053 K (Sun: 5,772 K)
- Mass
- 0.81 M☉
- Radius
- 0.77 R☉
- Age
- 4.8 billion years (Sun: 4.6)
The Kepler-1143 Planetary System
Kepler-1143 c is one of 2 known planets in the Kepler-1143 system. Its siblings:
- Kepler-1143 b (Super Earth)
Kepler-1143 c — Complete Data
| Radius | 3.600 Earth radii (0.321 Jupiter radii) |
|---|---|
| Orbital period | 210.63 days |
| Earth Similarity Index | 0.56 |
| Distance from Earth | 1,810.8 light-years (555.2 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-1143 c
Is Kepler-1143 c habitable?
Kepler-1143 c is not known to orbit within the habitable zone of Kepler-1143, and as a sub-Neptune it is an unlikely candidate for life as we know it.
How far away is Kepler-1143 c?
Kepler-1143 c is about 1,811 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 31,870,080 years to get there.
How big is Kepler-1143 c compared to Earth?
Kepler-1143 c has 3.60 times the radius of Earth.
How long is a year on Kepler-1143 c?
One orbit around Kepler-1143 takes 210.6 Earth days.
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