Kepler-1652 b
Kepler-1652 b is a super-Earth orbiting Kepler-1652 in the constellation Cygnus. It lies about 822 light-years from Earth and was discovered in 2017 using the transit method. It orbits within the habitable zone of its star — the region where liquid water could exist on a planet's surface.
How Big Is Kepler-1652 b?
Kepler-1652 b has a radius of 1.60 times that of Earth.
Is Kepler-1652 b in the Habitable Zone?
Kepler-1652 b orbits inside the conservative habitable zone of Kepler-1652 — the region where a rocky planet could sustain liquid water on its surface. This makes it one of the most interesting known exoplanets in the search for life.
Habitable zone of Kepler-1652: 0.124–0.319 AU (conservative: 0.157–0.303 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on Kepler-1652 b
The equilibrium temperature of Kepler-1652 b is about 268 K (-5 °C) — in a range broadly comparable to Earth, whose equilibrium temperature is 255 K. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C. It receives 0.81 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on Kepler-1652 b — one full orbit around Kepler-1652 — lasts 38.1 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.165 AU — closer to its star than Mercury is to the Sun.
How Was Kepler-1652 b Discovered?
Kepler-1652 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-1652 b?
Kepler-1652 b is 821.9 light-years (252.0 parsecs) from Earth. Light arriving here tonight left the planet around the year 1205. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 14,465,440 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-1652 b scores 0.83, ranking #21 of 5,565 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-1652
Kepler-1652
- Surface temperature
- 3,638 K (Sun: 5,772 K)
- Mass
- 0.40 M☉
- Radius
- 0.38 R☉
- Luminosity
- 0.0230 L☉
- Age
- 3.2 billion years (Sun: 4.6)
Planetary System
Kepler-1652 b is the only planet known to orbit Kepler-1652 so far.
Kepler-1652 b — Complete Data
| Radius | 1.600 Earth radii (0.143 Jupiter radii) |
|---|---|
| Orbital period | 38.10 days |
| Orbital distance | 0.165 AU |
| Equilibrium temperature | 268 K (-5 °C) |
| Stellar irradiation | 0.81× Earth |
| Earth Similarity Index | 0.83 |
| Distance from Earth | 821.9 light-years (252.0 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2017 |
Data: NASA Exoplanet Archive, last updated 2017-11-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-1652 b
Is Kepler-1652 b habitable?
Kepler-1652 b orbits within the habitable zone of Kepler-1652, the region where liquid water could exist on a planet's surface. It sits in the conservative habitable zone — the most promising region for habitability. Whether it is actually habitable depends on its atmosphere and composition, which remain unknown.
How far away is Kepler-1652 b?
Kepler-1652 b is about 822 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 14,465,440 years to get there.
How big is Kepler-1652 b compared to Earth?
Kepler-1652 b has 1.60 times the radius of Earth.
How long is a year on Kepler-1652 b?
One orbit around Kepler-1652 takes 38.1 Earth days.
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