Kepler-783 c
Kepler-783 c is a mini-Neptune orbiting Kepler-783 in the constellation Cygnus. It lies about 1,683 light-years from Earth and was discovered in 2020 using the transit method.
How Big Is Kepler-783 c?
Kepler-783 c has a radius of 2.33 times that of Earth.
Is Kepler-783 c in the Habitable Zone?
The position of Kepler-783 c relative to the habitable zone of Kepler-783 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-783: 0.588–1.400 AU (conservative: 0.744–1.327 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-783 c — one full orbit around Kepler-783 — lasts 7.05 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-783 c Discovered?
Kepler-783 c was discovered in 2020 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-783 c?
Kepler-783 c is 1,683.3 light-years (516.1 parsecs) from Earth. Light arriving here tonight left the planet about 1,683 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 29,626,080 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-783 c scores 0.25, ranking #3,126 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-783
Kepler-783
- Surface temperature
- 5,411 K (Sun: 5,772 K)
- Mass
- 0.94 M☉
- Radius
- 0.87 R☉
- Luminosity
- 0.5876 L☉
The Kepler-783 Planetary System
Kepler-783 c is one of 2 known planets in the Kepler-783 system. Its siblings:
- Kepler-783 b (Terrestrial)
Kepler-783 c — Complete Data
| Radius | 2.332 Earth radii (0.208 Jupiter radii) |
|---|---|
| Orbital period | 7.05 days |
| Earth Similarity Index | 0.25 |
| Distance from Earth | 1,683.3 light-years (516.1 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2020 |
Data: NASA Exoplanet Archive, last updated 2020-09-08. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-783 c
Is Kepler-783 c habitable?
Kepler-783 c is not known to orbit within the habitable zone of Kepler-783, and as a mini-Neptune it is an unlikely candidate for life as we know it.
How far away is Kepler-783 c?
Kepler-783 c is about 1,683 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 29,626,080 years to get there.
How big is Kepler-783 c compared to Earth?
Kepler-783 c has 2.33 times the radius of Earth.
How long is a year on Kepler-783 c?
One orbit around Kepler-783 takes 7.1 Earth days — short enough that 52 of its years would fit into one Earth year.
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