Kepler-94 b
Kepler-94 b is a puffy low-density planet orbiting Kepler-94 in the constellation Lyra. It lies about 626 light-years from Earth and was discovered in 2014 using the transit method.
How Big Is Kepler-94 b?
Kepler-94 b has a radius of 3.51 times that of Earth. Its mass is 10.8 times that of Earth, giving it a density of 1.45 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is Kepler-94 b in the Habitable Zone?
The position of Kepler-94 b relative to the habitable zone of Kepler-94 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-94: 0.412–1.004 AU (conservative: 0.521–0.952 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-94 b — one full orbit around Kepler-94 — lasts 2.51 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-94 b Discovered?
Kepler-94 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 Kepler-94 b?
Kepler-94 b is 625.9 light-years (191.9 parsecs) from Earth. Light arriving here tonight left the planet around the year 1401. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 11,015,840 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-94 b scores 0.20, ranking #3,921 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-94
Kepler-94
- Surface temperature
- 4,781 K (Sun: 5,772 K)
- Mass
- 0.81 M☉
- Radius
- 0.76 R☉
- Age
- 1.4 billion years (Sun: 4.6)
The Kepler-94 Planetary System
Kepler-94 b is one of 2 known planets in the Kepler-94 system. Its siblings:
- Kepler-94 c (Cold Gas Giant)
Kepler-94 b — Complete Data
| Radius | 3.510 Earth radii (0.313 Jupiter radii) |
|---|---|
| Mass | 10.84 Earth masses (0.034 Jupiter masses) |
| Density | 1.45 g/cm³ (Earth: 5.51) |
| Orbital period | 2.51 days |
| Earth Similarity Index | 0.20 |
| Distance from Earth | 625.9 light-years (191.9 parsecs) |
| Constellation | Lyra |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2014 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-94 b
Is Kepler-94 b habitable?
Kepler-94 b is not known to orbit within the habitable zone of Kepler-94, and as a puffy low-density planet it is an unlikely candidate for life as we know it.
How far away is Kepler-94 b?
Kepler-94 b is about 626 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 11,015,840 years to get there.
How big is Kepler-94 b compared to Earth?
Kepler-94 b has 3.51 times the radius of Earth and about 10.8 times its mass.
How long is a year on Kepler-94 b?
One orbit around Kepler-94 takes 2.5 Earth days — short enough that 146 of its years would fit into one Earth year.
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