Kepler-890 b
Kepler-890 b is a cold gas giant orbiting Kepler-890 in the constellation Lyra. It lies about 5,584 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-890 b?
Kepler-890 b has a radius of 8.89 times that of Earth, or 0.79 times the radius of Jupiter.
Is Kepler-890 b in the Habitable Zone?
The position of Kepler-890 b relative to the habitable zone of Kepler-890 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-890: 0.891–2.090 AU (conservative: 1.128–1.981 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-890 b — one full orbit around Kepler-890 — lasts 52.8 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-890 b Discovered?
Kepler-890 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-890 b?
Kepler-890 b is 5,584.2 light-years (1,712.1 parsecs) from Earth. Light arriving here tonight left the planet about 5,584 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 98,281,920 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-890 b scores 0.14, ranking #4,258 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-890
Kepler-890
- Surface temperature
- 5,954 K (Sun: 5,772 K)
- Mass
- 1.09 M☉
- Radius
- 1.13 R☉
- Age
- 3.6 billion years (Sun: 4.6)
Planetary System
Kepler-890 b is the only planet known to orbit Kepler-890 so far.
Kepler-890 b — Complete Data
| Radius | 8.890 Earth radii (0.793 Jupiter radii) |
|---|---|
| Orbital period | 52.76 days |
| Earth Similarity Index | 0.14 |
| Distance from Earth | 5,584.2 light-years (1,712.1 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-890 b
Is Kepler-890 b habitable?
Kepler-890 b is not known to orbit within the habitable zone of Kepler-890, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is Kepler-890 b?
Kepler-890 b is about 5,584 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 98,281,920 years to get there.
How big is Kepler-890 b compared to Earth?
Kepler-890 b has 8.89 times the radius of Earth.
How long is a year on Kepler-890 b?
One orbit around Kepler-890 takes 52.8 Earth days.
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