Kepler-975 b
Kepler-975 b is a super-Earth orbiting Kepler-975 in the constellation Lyra. It lies about 1,390 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-975 b?
Kepler-975 b has a radius of 1.48 times that of Earth.
Is Kepler-975 b in the Habitable Zone?
The position of Kepler-975 b relative to the habitable zone of Kepler-975 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-975: 0.424–1.029 AU (conservative: 0.537–0.976 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-975 b — one full orbit around Kepler-975 — lasts just 47.3 hours, shorter than Mercury's 88-day year.
How Was Kepler-975 b Discovered?
Kepler-975 b 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-975 b?
Kepler-975 b is 1,389.7 light-years (426.1 parsecs) from Earth. Light arriving here tonight left the planet about 1,390 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 24,458,720 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-975 b scores 0.28, ranking #2,114 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-975
Kepler-975
- Surface temperature
- 4,897 K (Sun: 5,772 K)
- Mass
- 0.80 M☉
- Radius
- 0.75 R☉
- Age
- 3.9 billion years (Sun: 4.6)
The Kepler-975 Planetary System
Kepler-975 b is one of 2 known planets in the Kepler-975 system. Its siblings:
- Kepler-975 c (Hot Jupiter)
Kepler-975 b — Complete Data
| Radius | 1.480 Earth radii (0.132 Jupiter radii) |
|---|---|
| Orbital period | 1.97 days |
| Earth Similarity Index | 0.28 |
| Distance from Earth | 1,389.7 light-years (426.1 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-975 b
Is Kepler-975 b habitable?
Kepler-975 b is not known to orbit within the habitable zone of Kepler-975, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is Kepler-975 b?
Kepler-975 b is about 1,390 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 24,458,720 years to get there.
How big is Kepler-975 b compared to Earth?
Kepler-975 b has 1.48 times the radius of Earth.
How long is a year on Kepler-975 b?
One orbit around Kepler-975 takes 2.0 Earth days — short enough that 185 of its years would fit into one Earth year.
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