Kepler-511 c
Kepler-511 c is a Neptune-like planet orbiting Kepler-511 in the constellation Lyra. It lies about 2,127 light-years from Earth and was discovered in 2021 using the transit method.
How Big Is Kepler-511 c?
Kepler-511 c has a radius of 4.21 times that of Earth.
Is Kepler-511 c in the Habitable Zone?
The position of Kepler-511 c relative to the habitable zone of Kepler-511 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-511: 1.090–2.563 AU (conservative: 1.381–2.430 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-511 c — one full orbit around Kepler-511 — lasts 26.6 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-511 c Discovered?
Kepler-511 c was discovered in 2021 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-511 c?
Kepler-511 c is 2,126.5 light-years (652.0 parsecs) from Earth. Light arriving here tonight left the planet about 2,127 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 37,426,400 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-511 c scores 0.18, ranking #4,034 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-511
Kepler-511
- Surface temperature
- 5,866 K (Sun: 5,772 K)
- Mass
- 0.96 M☉
- Radius
- 1.42 R☉
The Kepler-511 Planetary System
Kepler-511 c is one of 2 known planets in the Kepler-511 system. Its siblings:
- Kepler-511 b (Cold Gas Giant)
Kepler-511 c — Complete Data
| Radius | 4.210 Earth radii (0.376 Jupiter radii) |
|---|---|
| Orbital period | 26.63 days |
| Earth Similarity Index | 0.18 |
| Distance from Earth | 2,126.5 light-years (652.0 parsecs) |
| Constellation | Lyra |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2021-12-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-511 c
Is Kepler-511 c habitable?
Kepler-511 c is not known to orbit within the habitable zone of Kepler-511, and as a Neptune-like planet it is an unlikely candidate for life as we know it.
How far away is Kepler-511 c?
Kepler-511 c is about 2,127 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 37,426,400 years to get there.
How big is Kepler-511 c compared to Earth?
Kepler-511 c has 4.21 times the radius of Earth.
How long is a year on Kepler-511 c?
One orbit around Kepler-511 takes 26.6 Earth days — short enough that 14 of its years would fit into one Earth year.
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