Kepler-1624 b
Kepler-1624 b is a hot Jupiter orbiting the M V star Kepler-1624 in the constellation Cygnus. It lies about 845 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-1624 b?
Kepler-1624 b has a radius of 6.59 times that of Earth, or 0.59 times the radius of Jupiter.
Is Kepler-1624 b in the Habitable Zone?
The position of Kepler-1624 b relative to the habitable zone of Kepler-1624 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-1624: 0.191–0.490 AU (conservative: 0.242–0.464 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-1624 b — one full orbit around Kepler-1624 — lasts 3.29 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-1624 b Discovered?
Kepler-1624 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-1624 b?
Kepler-1624 b is 844.7 light-years (259.0 parsecs) from Earth. Light arriving here tonight left the planet around the year 1182. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 14,866,720 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-1624 b scores 0.16, ranking #4,136 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-1624
Kepler-1624
- Spectral type
- M V
- Surface temperature
- 3,768 K (Sun: 5,772 K)
- Mass
- 0.54 M☉
- Radius
- 0.55 R☉
Planetary System
Kepler-1624 b is the only planet known to orbit Kepler-1624 so far.
Kepler-1624 b — Complete Data
| Radius | 6.590 Earth radii (0.588 Jupiter radii) |
|---|---|
| Orbital period | 3.29 days |
| Earth Similarity Index | 0.16 |
| Distance from Earth | 844.7 light-years (259.0 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2016 |
Data: NASA Exoplanet Archive, last updated 2026-03-26. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-1624 b
Is Kepler-1624 b habitable?
Kepler-1624 b is not known to orbit within the habitable zone of Kepler-1624, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is Kepler-1624 b?
Kepler-1624 b is about 845 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 14,866,720 years to get there.
How big is Kepler-1624 b compared to Earth?
Kepler-1624 b has 6.59 times the radius of Earth.
How long is a year on Kepler-1624 b?
One orbit around Kepler-1624 takes 3.3 Earth days — short enough that 111 of its years would fit into one Earth year.
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