Kepler-1085 b
Kepler-1085 b is a cold gas giant orbiting Kepler-1085 in the constellation Lyra. It lies about 4,451 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-1085 b?
Kepler-1085 b has a radius of 7.22 times that of Earth, or 0.64 times the radius of Jupiter.
Is Kepler-1085 b in the Habitable Zone?
The position of Kepler-1085 b relative to the habitable zone of Kepler-1085 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-1085: 0.820–1.929 AU (conservative: 1.038–1.829 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-1085 b — one full orbit around Kepler-1085 — lasts 219.3 Earth days, between the years of Mercury (88 days) and Earth (365 days).
How Was Kepler-1085 b Discovered?
Kepler-1085 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-1085 b?
Kepler-1085 b is 4,450.5 light-years (1,364.5 parsecs) from Earth. Light arriving here tonight left the planet about 4,451 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 78,328,800 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-1085 b scores 0.40, ranking #459 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-1085
Kepler-1085
- Surface temperature
- 5,816 K (Sun: 5,772 K)
- Mass
- 1.05 M☉
- Radius
- 1.08 R☉
- Luminosity
- 1.1986 L☉
The Kepler-1085 Planetary System
Kepler-1085 b is one of 2 known planets in the Kepler-1085 system. Its siblings:
- Kepler-1085 c (Sub Neptune)
Kepler-1085 b — Complete Data
| Radius | 7.220 Earth radii (0.644 Jupiter radii) |
|---|---|
| Orbital period | 219.32 days |
| Earth Similarity Index | 0.40 |
| Distance from Earth | 4,450.5 light-years (1,364.5 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-1085 b
Is Kepler-1085 b habitable?
Kepler-1085 b is not known to orbit within the habitable zone of Kepler-1085, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is Kepler-1085 b?
Kepler-1085 b is about 4,451 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 78,328,800 years to get there.
How big is Kepler-1085 b compared to Earth?
Kepler-1085 b has 7.22 times the radius of Earth.
How long is a year on Kepler-1085 b?
One orbit around Kepler-1085 takes 219.3 Earth days.
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