Kepler-176 e
Kepler-176 e is a super-Earth orbiting Kepler-176 in the constellation Cygnus. It lies about 1,720 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-176 e?
Kepler-176 e has a radius of 1.45 times that of Earth.
Is Kepler-176 e in the Habitable Zone?
The position of Kepler-176 e relative to the habitable zone of Kepler-176 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-176: 0.566–1.355 AU (conservative: 0.716–1.285 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-176 e — one full orbit around Kepler-176 — lasts 51.2 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-176 e Discovered?
Kepler-176 e 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-176 e?
Kepler-176 e is 1,719.9 light-years (527.3 parsecs) from Earth. Light arriving here tonight left the planet about 1,720 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 30,270,240 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-176 e scores 0.47, ranking #296 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-176
Kepler-176
- Surface temperature
- 5,232 K (Sun: 5,772 K)
- Radius
- 0.89 R☉
The Kepler-176 Planetary System
Kepler-176 e is one of 4 known planets in the Kepler-176 system. Its siblings:
- Kepler-176 b (Super Earth)
- Kepler-176 c (Mini Neptune)
- Kepler-176 d (Mini Neptune)
Kepler-176 e — Complete Data
| Radius | 1.450 Earth radii (0.129 Jupiter radii) |
|---|---|
| Orbital period | 51.17 days |
| Earth Similarity Index | 0.47 |
| Distance from Earth | 1,719.9 light-years (527.3 parsecs) |
| Constellation | Cygnus |
| 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-176 e
Is Kepler-176 e habitable?
Kepler-176 e is not known to orbit within the habitable zone of Kepler-176, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is Kepler-176 e?
Kepler-176 e is about 1,720 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 30,270,240 years to get there.
How big is Kepler-176 e compared to Earth?
Kepler-176 e has 1.45 times the radius of Earth.
How long is a year on Kepler-176 e?
One orbit around Kepler-176 takes 51.2 Earth days.
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