K2-139 b
Orbiting K2-139
K2-139 b is an exoplanet orbiting the star K2-139, discovered in 2017 using the Transit method. It is a Neptune-sized world.
Radius
9.11
Earth radii
Mass (est.)
65.04
Earth masses
Orbital Period
28.4
days
Distance
153.9
parsecs
Equilibrium Temp
524
K
Radius (Earth radii)
9.11
Mass (Earth masses)
65.04
Estimated
Equilibrium Temperature
524 K
Orbital Period
28.38 days
Distance from Earth
153.9 pc (~502 ly)
Spectral Type
Unknown
Temperature
5370 K
Mass (Solar)
0.96 M☉
Radius (Solar)
0.88 R☉
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
289.0667°, -17.9107°
Discovery Method
Transit
Discovery Year
2017
Source ID: K2-139 b
K2-139 b orbits K2-139 and was reported in 2017 and was detected with the Transit method.
Published measurements list a radius of 9.11 Earth radii, a mass of 65.04 Earth masses (estimated), an orbital period of 28.38 days, and an equilibrium temperature near 524 K.
Catalog data places the system at about 153.9 parsecs from Earth and 1 known planet in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open K2-139