Exoplanet
K2-121 b
Orbiting K2-121
Overview
K2-121 b is an exoplanet orbiting the star K2-121, discovered in 2017 using the Transit method. It is a Neptune-sized world.
Key Measurements
Radius
7.16
Earth radii
015 R⊕
Mass
51.00
Earth masses
0500 M⊕
Orbital Period
5.2
days
0.1d10,000d
Distance
169.4
parsecs
Nearby10,000 pc
Equilibrium Temp
716
K
150 K3,500 K
Radius (Earth radii)
7.16
Mass (Earth masses)
51.00
Measured
Equilibrium Temperature
716 K
Orbital Period
5.19 days
Distance from Earth
169.4 pc (~553 ly)
Spectral Type
Unknown
Temperature
4526 K
Mass (Solar)
0.71 M☉
Radius (Solar)
0.68 R☉
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
126.9367°, 17.5793°
Discovery Method
Transit
Discovery Year
2017
Data Sources
Source ID: K2-121 b