Kepler-419 b
Kepler-419 b is a cold gas giant orbiting Kepler-419 in the constellation Cygnus. It lies about 3,299 light-years from Earth and was discovered in 2014 using the transit method.
How Big Is Kepler-419 b?
Kepler-419 b has a radius of 10.80 times that of Earth, or 0.96 times the radius of Jupiter. Its mass is 795 times that of Earth.
Is Kepler-419 b in the Habitable Zone?
Kepler-419 b orbits inside the inner edge of the habitable zone of Kepler-419. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of Kepler-419: 1.555–3.612 AU (conservative: 1.969–3.425 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-419 b — one full orbit around Kepler-419 — lasts 69.8 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.370 AU — closer to its star than Mercury is to the Sun. Its orbit is highly elliptical (eccentricity 0.83), swinging dramatically closer to and farther from its star.
How Was Kepler-419 b Discovered?
Kepler-419 b was discovered in 2014 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-419 b?
Kepler-419 b is 3,298.6 light-years (1,011.4 parsecs) from Earth. Light arriving here tonight left the planet about 3,299 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 58,055,360 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-419 b scores 0.10, ranking #4,471 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-419
Kepler-419
- Surface temperature
- 6,430 K (Sun: 5,772 K)
- Mass
- 1.39 M☉
- Radius
- 1.74 R☉
The Kepler-419 Planetary System
Kepler-419 b is one of 2 known planets in the Kepler-419 system. Its siblings:
- Kepler-419 c (Cold Gas Giant)
Kepler-419 b — Complete Data
| Radius | 10.800 Earth radii (0.960 Jupiter radii) |
|---|---|
| Mass | 794.50 Earth masses (2.500 Jupiter masses) |
| Orbital period | 69.75 days |
| Orbital distance | 0.370 AU |
| Eccentricity | 0.833 |
| Earth Similarity Index | 0.10 |
| Distance from Earth | 3,298.6 light-years (1,011.4 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2014 |
Data: NASA Exoplanet Archive, last updated 2014-06-25. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-419 b
Is Kepler-419 b habitable?
No — Kepler-419 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is Kepler-419 b?
Kepler-419 b is about 3,299 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 58,055,360 years to get there.
How big is Kepler-419 b compared to Earth?
Kepler-419 b has 10.80 times the radius of Earth and about 795 times its mass.
How long is a year on Kepler-419 b?
One orbit around Kepler-419 takes 69.8 Earth days.
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