Kepler-277 c
Kepler-277 c is a super-Earth orbiting Kepler-277 in the constellation Lyra. It lies about 3,185 light-years from Earth and was discovered in 2013 using the transit method.
How Big Is Kepler-277 c?
Kepler-277 c has a radius of 3.36 times that of Earth. Its mass is 64.2 times that of Earth.
Is Kepler-277 c in the Habitable Zone?
The position of Kepler-277 c relative to the habitable zone of Kepler-277 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on Kepler-277 c — one full orbit around Kepler-277 — lasts 33.0 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-277 c Discovered?
Kepler-277 c was discovered in 2013 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-277 c?
Kepler-277 c is 3,185.4 light-years (976.6 parsecs) from Earth. Light arriving here tonight left the planet about 3,185 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 56,063,040 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-277 c scores 0.21, ranking #3,759 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-277
Kepler-277
- Mass
- 1.12 M☉
- Radius
- 1.69 R☉
The Kepler-277 Planetary System
Kepler-277 c is one of 2 known planets in the Kepler-277 system. Its siblings:
- Kepler-277 b (Super Earth)
Kepler-277 c — Complete Data
| Radius | 3.360 Earth radii (0.300 Jupiter radii) |
|---|---|
| Mass | 64.20 Earth masses (0.202 Jupiter masses) |
| Orbital period | 33.01 days |
| Earth Similarity Index | 0.21 |
| Distance from Earth | 3,185.4 light-years (976.6 parsecs) |
| Constellation | Lyra |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2013 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-277 c
Is Kepler-277 c habitable?
Kepler-277 c is not known to orbit within the habitable zone of Kepler-277, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is Kepler-277 c?
Kepler-277 c is about 3,185 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 56,063,040 years to get there.
How big is Kepler-277 c compared to Earth?
Kepler-277 c has 3.36 times the radius of Earth and about 64.2 times its mass.
How long is a year on Kepler-277 c?
One orbit around Kepler-277 takes 33.0 Earth days — short enough that 11 of its years would fit into one Earth year.
Explore Kepler-277 c in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
