Kepler-799 b
Kepler-799 b is a cold gas giant orbiting Kepler-799 in the constellation Lyra. It lies about 4,922 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-799 b?
Kepler-799 b has a radius of 6.88 times that of Earth, or 0.61 times the radius of Jupiter.
Is Kepler-799 b in the Habitable Zone?
The position of Kepler-799 b relative to the habitable zone of Kepler-799 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-799: 1.131–2.679 AU (conservative: 1.432–2.539 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-799 b — one full orbit around Kepler-799 — lasts 133.5 Earth days, between the years of Mercury (88 days) and Earth (365 days).
How Was Kepler-799 b Discovered?
Kepler-799 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-799 b?
Kepler-799 b is 4,922.0 light-years (1,509.1 parsecs) from Earth. Light arriving here tonight left the planet about 4,922 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 86,627,200 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-799 b scores 0.23, ranking #3,450 of 5,565 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-799
Kepler-799
- Surface temperature
- 5,588 K (Sun: 5,772 K)
- Mass
- 1.03 M☉
- Radius
- 1.59 R☉
The Kepler-799 Planetary System
Kepler-799 b is one of 2 known planets in the Kepler-799 system. Its siblings:
- Kepler-799 c (Mini Neptune)
Kepler-799 b — Complete Data
| Radius | 6.880 Earth radii (0.614 Jupiter radii) |
|---|---|
| Orbital period | 133.46 days |
| Earth Similarity Index | 0.23 |
| Distance from Earth | 4,922.0 light-years (1,509.1 parsecs) |
| Constellation | Lyra |
| 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-799 b
Is Kepler-799 b habitable?
Kepler-799 b is not known to orbit within the habitable zone of Kepler-799, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is Kepler-799 b?
Kepler-799 b is about 4,922 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 86,627,200 years to get there.
How big is Kepler-799 b compared to Earth?
Kepler-799 b has 6.88 times the radius of Earth.
How long is a year on Kepler-799 b?
One orbit around Kepler-799 takes 133.5 Earth days.
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