Kepler-1651 b
Kepler-1651 b is a super-Earth orbiting Kepler-1651 in the constellation Draco. It lies about 217 light-years from Earth and was discovered in 2017 using the transit method.
How Big Is Kepler-1651 b?
Kepler-1651 b has a radius of 1.84 times that of Earth.
Is Kepler-1651 b in the Habitable Zone?
The position of Kepler-1651 b relative to the habitable zone of Kepler-1651 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-1651: 0.169–0.433 AU (conservative: 0.214–0.411 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-1651 b — one full orbit around Kepler-1651 — lasts 9.88 Earth days, shorter than Mercury's 88-day year. Its orbit is mildly elliptical (eccentricity 0.13).
How Was Kepler-1651 b Discovered?
Kepler-1651 b was discovered in 2017 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-1651 b?
Kepler-1651 b is 216.6 light-years (66.4 parsecs) from Earth. Light arriving here tonight left the planet around the year 1810. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,812,160 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-1651 b scores 0.40, ranking #488 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-1651
Kepler-1651 b belongs to a system of 2 stars; it orbits Kepler-1651.
Kepler-1651
- Surface temperature
- 3,713 K (Sun: 5,772 K)
- Mass
- 0.52 M☉
- Radius
- 0.50 R☉
- Luminosity
- 0.0429 L☉
Planetary System
Kepler-1651 b is the only planet known to orbit Kepler-1651 so far.
Kepler-1651 b — Complete Data
| Radius | 1.840 Earth radii (0.164 Jupiter radii) |
|---|---|
| Orbital period | 9.88 days |
| Eccentricity | 0.130 |
| Earth Similarity Index | 0.40 |
| Distance from Earth | 216.6 light-years (66.4 parsecs) |
| Constellation | Draco |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2017 |
Data: NASA Exoplanet Archive, last updated 2017-05-28. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-1651 b
Is Kepler-1651 b habitable?
Kepler-1651 b is not known to orbit within the habitable zone of Kepler-1651, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is Kepler-1651 b?
Kepler-1651 b is about 217 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,812,160 years to get there.
How big is Kepler-1651 b compared to Earth?
Kepler-1651 b has 1.84 times the radius of Earth.
How long is a year on Kepler-1651 b?
One orbit around Kepler-1651 takes 9.9 Earth days — short enough that 37 of its years would fit into one Earth year.
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