Kepler-867 b
Kepler-867 b is a Neptune-like planet orbiting Kepler-867 in the constellation Cygnus. It lies about 3,899 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-867 b?
Kepler-867 b has a radius of 4.64 times that of Earth.
Is Kepler-867 b in the Habitable Zone?
The position of Kepler-867 b relative to the habitable zone of Kepler-867 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-867: 0.637–1.511 AU (conservative: 0.807–1.432 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-867 b — one full orbit around Kepler-867 — lasts 150.2 Earth days, between the years of Mercury (88 days) and Earth (365 days).
How Was Kepler-867 b Discovered?
Kepler-867 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-867 b?
Kepler-867 b is 3,899.3 light-years (1,195.5 parsecs) from Earth. Light arriving here tonight left the planet about 3,899 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 68,627,680 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-867 b scores 0.36, ranking #715 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-867
Kepler-867
- Surface temperature
- 5,541 K (Sun: 5,772 K)
- Mass
- 0.92 M☉
- Radius
- 0.91 R☉
- Age
- 5.9 billion years (Sun: 4.6)
Planetary System
Kepler-867 b is the only planet known to orbit Kepler-867 so far.
Kepler-867 b — Complete Data
| Radius | 4.640 Earth radii (0.414 Jupiter radii) |
|---|---|
| Orbital period | 150.24 days |
| Earth Similarity Index | 0.36 |
| Distance from Earth | 3,899.3 light-years (1,195.5 parsecs) |
| Constellation | Cygnus |
| 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-867 b
Is Kepler-867 b habitable?
Kepler-867 b is not known to orbit within the habitable zone of Kepler-867, and as a Neptune-like planet it is an unlikely candidate for life as we know it.
How far away is Kepler-867 b?
Kepler-867 b is about 3,899 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 68,627,680 years to get there.
How big is Kepler-867 b compared to Earth?
Kepler-867 b has 4.64 times the radius of Earth.
How long is a year on Kepler-867 b?
One orbit around Kepler-867 takes 150.2 Earth days.
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