Kepler-769 b
Kepler-769 b is a mini-Neptune orbiting Kepler-769 in the constellation Cygnus. It lies about 3,815 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-769 b?
Kepler-769 b has a radius of 2.92 times that of Earth.
Is Kepler-769 b in the Habitable Zone?
The position of Kepler-769 b relative to the habitable zone of Kepler-769 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-769: 1.074–2.507 AU (conservative: 1.360–2.377 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-769 b — one full orbit around Kepler-769 — lasts 7.43 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-769 b Discovered?
Kepler-769 b 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-769 b?
Kepler-769 b is 3,814.6 light-years (1,169.6 parsecs) from Earth. Light arriving here tonight left the planet about 3,815 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 67,136,960 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-769 b scores 0.22, ranking #3,684 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-769
Kepler-769
- Surface temperature
- 6,186 K (Sun: 5,772 K)
- Mass
- 1.19 M☉
- Radius
- 1.28 R☉
- Age
- 2.9 billion years (Sun: 4.6)
The Kepler-769 Planetary System
Kepler-769 b is one of 2 known planets in the Kepler-769 system. Its siblings:
- Kepler-769 c (Super Earth)
Kepler-769 b — Complete Data
| Radius | 2.920 Earth radii (0.261 Jupiter radii) |
|---|---|
| Orbital period | 7.43 days |
| Earth Similarity Index | 0.22 |
| Distance from Earth | 3,814.6 light-years (1,169.6 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-769 b
Is Kepler-769 b habitable?
Kepler-769 b is not known to orbit within the habitable zone of Kepler-769, and as a mini-Neptune it is an unlikely candidate for life as we know it.
How far away is Kepler-769 b?
Kepler-769 b is about 3,815 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 67,136,960 years to get there.
How big is Kepler-769 b compared to Earth?
Kepler-769 b has 2.92 times the radius of Earth.
How long is a year on Kepler-769 b?
One orbit around Kepler-769 takes 7.4 Earth days — short enough that 49 of its years would fit into one Earth year.
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