KOI-319 b
KOI-319 b is a cold gas giant orbiting KOI-319 in the constellation Cygnus. It lies about 2,153 light-years from Earth and was discovered in 2014 using the transit method.
How Big Is KOI-319 b?
KOI-319 b has a radius of 10.67 times that of Earth, or 0.95 times the radius of Jupiter. Its mass is 3,178 times that of Earth.
Is KOI-319 b in the Habitable Zone?
The position of KOI-319 b relative to the habitable zone of KOI-319 cannot be precisely determined from the available orbital data.
Habitable zone of KOI-319: 1.594–3.746 AU (conservative: 2.019–3.552 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 ›
Temperature on KOI-319 b
KOI-319 b receives 60.40 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on KOI-319 b — one full orbit around KOI-319 — lasts 46.1 Earth days, shorter than Mercury's 88-day year. Its orbit is nearly circular (eccentricity 0.034).
How Was KOI-319 b Discovered?
KOI-319 b was discovered in 2014 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 KOI-319 b?
KOI-319 b is 2,153.1 light-years (660.1 parsecs) from Earth. Light arriving here tonight left the planet about 2,153 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 37,894,560 years to make the journey.
The Host Star: KOI-319
KOI-319
- Surface temperature
- 5,880 K (Sun: 5,772 K)
- Mass
- 1.33 M☉
- Radius
- 2.06 R☉
The KOI-319 Planetary System
KOI-319 b is one of 2 known planets in the KOI-319 system. Its siblings:
KOI-319 b — Complete Data
| Radius | 10.670 Earth radii (0.952 Jupiter radii) |
|---|---|
| Mass | 3,178.28 Earth masses (10.000 Jupiter masses) |
| Orbital period | 46.15 days |
| Eccentricity | 0.034 |
| Stellar irradiation | 60.40× Earth |
| Distance from Earth | 2,153.1 light-years (660.1 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2014 |
Data: NASA Exoplanet Archive, last updated 2026-08-20. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About KOI-319 b
Is KOI-319 b habitable?
KOI-319 b is not known to orbit within the habitable zone of KOI-319, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is KOI-319 b?
KOI-319 b is about 2,153 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 37,894,560 years to get there.
How big is KOI-319 b compared to Earth?
KOI-319 b has 10.67 times the radius of Earth and about 3,178 times its mass.
How long is a year on KOI-319 b?
One orbit around KOI-319 takes 46.1 Earth days.
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