Kepler-774 b
Kepler-774 b is a sub-Neptune orbiting Kepler-774 in the constellation Lyra. It lies about 2,994 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-774 b?
Kepler-774 b has a radius of 3.17 times that of Earth.
Is Kepler-774 b in the Habitable Zone?
The position of Kepler-774 b relative to the habitable zone of Kepler-774 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-774: 2.147–4.992 AU (conservative: 2.720–4.733 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-774 b — one full orbit around Kepler-774 — lasts 11.1 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-774 b Discovered?
Kepler-774 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-774 b?
Kepler-774 b is 2,993.5 light-years (917.8 parsecs) from Earth. Light arriving here tonight left the planet about 2,994 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 52,685,600 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-774 b scores 0.21, ranking #3,830 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-774
Kepler-774
- Surface temperature
- 6,403 K (Sun: 5,772 K)
- Mass
- 1.57 M☉
- Radius
- 2.42 R☉
- Age
- 2.1 billion years (Sun: 4.6)
Planetary System
Kepler-774 b is the only planet known to orbit Kepler-774 so far.
Kepler-774 b — Complete Data
| Radius | 3.170 Earth radii (0.283 Jupiter radii) |
|---|---|
| Orbital period | 11.09 days |
| Earth Similarity Index | 0.21 |
| Distance from Earth | 2,993.5 light-years (917.8 parsecs) |
| Constellation | Lyra |
| 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-774 b
Is Kepler-774 b habitable?
Kepler-774 b is not known to orbit within the habitable zone of Kepler-774, and as a sub-Neptune it is an unlikely candidate for life as we know it.
How far away is Kepler-774 b?
Kepler-774 b is about 2,994 light-years from Earth in the constellation Lyra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 52,685,600 years to get there.
How big is Kepler-774 b compared to Earth?
Kepler-774 b has 3.17 times the radius of Earth.
How long is a year on Kepler-774 b?
One orbit around Kepler-774 takes 11.1 Earth days — short enough that 33 of its years would fit into one Earth year.
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