Kepler-145 b
Kepler-145 b is a super-Earth orbiting Kepler-145 in the constellation Cygnus. It lies about 1,849 light-years from Earth and was discovered in 2013 using the transit method.
How Big Is Kepler-145 b?
Kepler-145 b has a radius of 2.65 times that of Earth. Its mass is 37.1 times that of Earth.
Is Kepler-145 b in the Habitable Zone?
The position of Kepler-145 b relative to the habitable zone of Kepler-145 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on Kepler-145 b — one full orbit around Kepler-145 — lasts 23.0 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-145 b Discovered?
Kepler-145 b was discovered in 2013 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-145 b?
Kepler-145 b is 1,848.8 light-years (566.9 parsecs) from Earth. Light arriving here tonight left the planet about 1,849 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 32,538,880 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-145 b scores 0.23, ranking #3,495 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-145
Kepler-145
- Mass
- 1.32 M☉
- Radius
- 1.85 R☉
The Kepler-145 Planetary System
Kepler-145 b is one of 2 known planets in the Kepler-145 system. Its siblings:
- Kepler-145 c (Neptune-like)
Kepler-145 b — Complete Data
| Radius | 2.650 Earth radii (0.236 Jupiter radii) |
|---|---|
| Mass | 37.10 Earth masses (0.117 Jupiter masses) |
| Orbital period | 22.95 days |
| Earth Similarity Index | 0.23 |
| Distance from Earth | 1,848.8 light-years (566.9 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2013 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-145 b
Is Kepler-145 b habitable?
Kepler-145 b is not known to orbit within the habitable zone of Kepler-145, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is Kepler-145 b?
Kepler-145 b is about 1,849 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 32,538,880 years to get there.
How big is Kepler-145 b compared to Earth?
Kepler-145 b has 2.65 times the radius of Earth and about 37.1 times its mass.
How long is a year on Kepler-145 b?
One orbit around Kepler-145 takes 23.0 Earth days — short enough that 16 of its years would fit into one Earth year.
Explore Kepler-145 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
