NASA (Exoplanet Catalog artwork)Kepler-1649c
The most Earth-like planet in Kepler's data, found by eye after an algorithm missed it
Overview
Kepler-1649c is an Earth-sized exoplanet, likely rocky, orbiting within the habitable zone of the red dwarf star Kepler-1649, the outermost planet of the planetary system discovered by Kepler’s space telescope. It is located about 301 light-years (92 pc) away from Earth, in the constellation of Cygnus.
Source: Wikipedia
NASA: Kepler-1649 c is a super Earth exoplanet that orbits a M-type star. Its mass is 1.2 Earths, it takes 19.5 days to complete one orbit of its star, and is 0.0649 AU from its star. Its discovery was announced in 2020.
Why it matters
- Rescued from the false-positive pile in 2020 by a team re-checking Kepler signals by hand.
- About 1.06 Earth radii and receives 75% of the light Earth does.
- Its red dwarf star is prone to flares, which may complicate habitability.
NASA puts it this way: “Kepler-1649 c is a super Earth exoplanet that orbits an M-type star. Its mass is 1.2 Earths, it takes 19.5 days to complete one orbit of its star, and is 0.0649 AU from its star. Its discovery was announced in 2020.”
Discovery & system
- Discovered
- 2020 · Transit · Kepler
- Discovery paper
- Vanderburg et al. 2020
- Discoverers
- Kepler Space Telescope
- Host star
- Kepler-1649 · 3,240 K · 0.2 M☉
- System
- 2 known planets
- Siblings
- Kepler-1649 b
The system
| World | Period | Distance | Radius | Mass | Temp. |
|---|---|---|---|---|---|
| Kepler-1649 b | 8.69 d | 0.051 AU | 1.02 R⊕ | 1.03 M⊕ | 307 K |
| Kepler-1649 c | 19.5 d | 0.065 AU | 1.06 R⊕ | 1.2 M⊕ | 234 K |
By the numbers
- Radius
- 1.06 R⊕6,753 km
- Mass
- 1.2 M⊕7.17 ×10²⁴ kg
- Orbital period
- 19.5 d0.05 yr
- Distance from star
- 0.065 AU9.71 million km
- Eccentricity
- 0nearly circular
- Equilibrium temp.
- 234 K-39 °C
- Starlight received
- 0.75 × Earth
- Distance from Earth
- 301 ly92.2 pc
- Density
- 5.54 g/cm³1.01 × Earth
Sources
Image: NASA (Exoplanet Catalog artwork) · NASA media: generally free of copyright · image page
Text: Wikipedia (CC BY-SA 4.0). Taglines and highlights are editorial.