Kepler-282 b
Kepler-282 b is a terrestrial planet orbiting Kepler-282 in the constellation Lyra. It lies about 4,363 light-years from Earth and was discovered in 2014 using the transit method.
How Big Is Kepler-282 b?
Kepler-282 b has a radius of 1.01 times that of Earth.
Is Kepler-282 b in the Habitable Zone?
The position of Kepler-282 b relative to the habitable zone of Kepler-282 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on Kepler-282 b — one full orbit around Kepler-282 — lasts 9.22 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.082 AU — closer to its star than Mercury is to the Sun.
How Was Kepler-282 b Discovered?
Kepler-282 b was discovered in 2014 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-282 b?
Kepler-282 b is 4,362.7 light-years (1,337.6 parsecs) from Earth. Light arriving here tonight left the planet about 4,363 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 76,783,520 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-282 b scores 0.30, ranking #1,367 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-282
Kepler-282
- Mass
- 0.97 M☉
- Radius
- 0.89 R☉
The Kepler-282 Planetary System
Kepler-282 b is one of 4 known planets in the Kepler-282 system. Its siblings:
- Kepler-282 c (Terrestrial)
- Kepler-282 d (Super Earth)
- Kepler-282 e (Super Earth)
Kepler-282 b — Complete Data
| Radius | 1.010 Earth radii (0.090 Jupiter radii) |
|---|---|
| Orbital period | 9.22 days |
| Orbital distance | 0.082 AU |
| Earth Similarity Index | 0.30 |
| Distance from Earth | 4,362.7 light-years (1,337.6 parsecs) |
| Constellation | Lyra |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2014 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-282 b
Is Kepler-282 b habitable?
Kepler-282 b is not known to orbit within the habitable zone of Kepler-282, and as a terrestrial planet it is an unlikely candidate for life as we know it.
How far away is Kepler-282 b?
Kepler-282 b is about 4,363 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 76,783,520 years to get there.
How big is Kepler-282 b compared to Earth?
Kepler-282 b has 1.01 times the radius of Earth.
How long is a year on Kepler-282 b?
One orbit around Kepler-282 takes 9.2 Earth days — short enough that 40 of its years would fit into one Earth year.
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