Kepler-619 b
Kepler-619 b is a sub-Neptune orbiting Kepler-619 in the constellation Cygnus. It lies about 2,938 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is Kepler-619 b?
Kepler-619 b has a radius of 3.16 times that of Earth.
Is Kepler-619 b in the Habitable Zone?
The position of Kepler-619 b relative to the habitable zone of Kepler-619 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-619: 0.795–1.859 AU (conservative: 1.007–1.762 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-619 b — one full orbit around Kepler-619 — lasts 5.40 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-619 b Discovered?
Kepler-619 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-619 b?
Kepler-619 b is 2,937.6 light-years (900.7 parsecs) from Earth. Light arriving here tonight left the planet about 2,938 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 51,701,760 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-619 b scores 0.21, ranking #3,799 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-619
Kepler-619
- Surface temperature
- 6,122 K (Sun: 5,772 K)
- Mass
- 1.04 M☉
- Radius
- 0.96 R☉
The Kepler-619 Planetary System
Kepler-619 b is one of 3 known planets in the Kepler-619 system. Its siblings:
- Kepler-619 c (Super Earth)
- Kepler-619 d (Neptune-like)
Kepler-619 b — Complete Data
| Radius | 3.160 Earth radii (0.282 Jupiter radii) |
|---|---|
| Orbital period | 5.40 days |
| Earth Similarity Index | 0.21 |
| Distance from Earth | 2,937.6 light-years (900.7 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-619 b
Is Kepler-619 b habitable?
Kepler-619 b is not known to orbit within the habitable zone of Kepler-619, and as a sub-Neptune it is an unlikely candidate for life as we know it.
How far away is Kepler-619 b?
Kepler-619 b is about 2,938 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 51,701,760 years to get there.
How big is Kepler-619 b compared to Earth?
Kepler-619 b has 3.16 times the radius of Earth.
How long is a year on Kepler-619 b?
One orbit around Kepler-619 takes 5.4 Earth days — short enough that 68 of its years would fit into one Earth year.
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