Kepler-702 b
Kepler-702 b is a cold gas giant orbiting Kepler-702 in the constellation Cygnus. It lies about 3,236 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-702 b?
Kepler-702 b has a radius of 9.17 times that of Earth, or 0.82 times the radius of Jupiter.
Is Kepler-702 b in the Habitable Zone?
The position of Kepler-702 b relative to the habitable zone of Kepler-702 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-702: 0.580–1.380 AU (conservative: 0.734–1.309 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-702 b — one full orbit around Kepler-702 — lasts 10.5 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-702 b Discovered?
Kepler-702 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-702 b?
Kepler-702 b is 3,235.7 light-years (992.1 parsecs) from Earth. Light arriving here tonight left the planet about 3,236 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 56,948,320 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-702 b scores 0.11, ranking #4,397 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-702
Kepler-702
- Surface temperature
- 5,419 K (Sun: 5,772 K)
- Mass
- 0.90 M☉
- Radius
- 0.86 R☉
- Age
- 4.5 billion years (Sun: 4.6)
Planetary System
Kepler-702 b is the only planet known to orbit Kepler-702 so far.
Kepler-702 b — Complete Data
| Radius | 9.170 Earth radii (0.818 Jupiter radii) |
|---|---|
| Orbital period | 10.53 days |
| Earth Similarity Index | 0.11 |
| Distance from Earth | 3,235.7 light-years (992.1 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-702 b
Is Kepler-702 b habitable?
Kepler-702 b is not known to orbit within the habitable zone of Kepler-702, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is Kepler-702 b?
Kepler-702 b is about 3,236 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 56,948,320 years to get there.
How big is Kepler-702 b compared to Earth?
Kepler-702 b has 9.17 times the radius of Earth.
How long is a year on Kepler-702 b?
One orbit around Kepler-702 takes 10.5 Earth days — short enough that 35 of its years would fit into one Earth year.
Explore Kepler-702 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
