K2-138b
Sign in to saveK2-138b is a potentially rocky Super-Earth exoplanet orbiting every 2 days around a K1V star. The planet, along with the four others in the system, was found by citizen scientists of the Exoplanet Explorers project on Zooniverse. It was the final planet found in the system and was officially announced on January 8, 2018.
Wikidata facts
- Radius
- 0.14
- Mass
- 0.0098
- Orbital period
- 2.35321
Show 11 more facts
- declination
- -10.84969380744611
- right ascension
- 348.94903556226210
- orbital inclination
- 87.72
- semi-major axis of an orbit
- 0.0338
- orbital eccentricity
- 0.048
- time of discovery or invention
- 2018-02-00
- right ascension component of proper motion
- -1.018
- declination component of proper motion
- -10.522
- parallax
- 4.9079
- catalog code
- TIC 4610830b
- argument of periapsis
- 244
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K2-138b is a potentially rocky Super-Earth exoplanet orbiting every 2 days around a K1V star. The planet, along with the four others in the system, was found by citizen scientists of the Exoplanet Explorers project on Zooniverse. It was the final planet found in the system and was officially announced on January 8, 2018.
K2-138b is the smallest planet of K2-138 with a radius of 1.57 , meaning it could be rocky. It orbits its host star every 2.35 days at a distance of 0.0338 AU. At this proximity, the planet is likely very hot and receives 486 times the stellar flux as Earth. The planet has a Mass of and a bulk density of g/cm−3, which is an earth-like density. The planet has likely a rocky core and a substantial atmospheric layer, composed of volatiles.