Kepler-589 c
Kepler-589 c is a terrestrial planet orbiting Kepler-589 in the constellation Draco. It lies about 1,999 light-years from Earth and was discovered in 2021 using the transit method.
How Big Is Kepler-589 c?
Kepler-589 c has a radius of 1.12 times that of Earth.
Is Kepler-589 c in the Habitable Zone?
The position of Kepler-589 c relative to the habitable zone of Kepler-589 cannot be precisely determined from the available orbital data.
Habitable zone of Kepler-589: 0.608–1.451 AU (conservative: 0.771–1.376 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-589 c — one full orbit around Kepler-589 — lasts 3.52 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-589 c Discovered?
Kepler-589 c was discovered in 2021 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-589 c?
Kepler-589 c is 1,998.7 light-years (612.8 parsecs) from Earth. Light arriving here tonight left the planet about 1,999 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 35,177,120 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-589 c scores 0.30, ranking #1,452 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-589
Kepler-589
- Surface temperature
- 5,372 K (Sun: 5,772 K)
- Mass
- 0.83 M☉
- Radius
- 0.92 R☉
The Kepler-589 Planetary System
Kepler-589 c is one of 2 known planets in the Kepler-589 system. Its siblings:
- Kepler-589 b (Mini Neptune)
Kepler-589 c — Complete Data
| Radius | 1.117 Earth radii (0.100 Jupiter radii) |
|---|---|
| Orbital period | 3.52 days |
| Earth Similarity Index | 0.30 |
| Distance from Earth | 1,998.7 light-years (612.8 parsecs) |
| Constellation | Draco |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2021-12-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-589 c
Is Kepler-589 c habitable?
Kepler-589 c is not known to orbit within the habitable zone of Kepler-589, and as a terrestrial planet it is an unlikely candidate for life as we know it.
How far away is Kepler-589 c?
Kepler-589 c is about 1,999 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 35,177,120 years to get there.
How big is Kepler-589 c compared to Earth?
Kepler-589 c has 1.12 times the radius of Earth.
How long is a year on Kepler-589 c?
One orbit around Kepler-589 takes 3.5 Earth days — short enough that 104 of its years would fit into one Earth year.
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