Exoplanet
HD 191939 d
Orbiting HD 191939
Overview
HD 191939 d is an exoplanet orbiting the star HD 191939, discovered in 2020 using the Transit method. It is a Mini-Neptune world.
Key Measurements
Radius
3.00
Earth radii
015 R⊕
Mass
2.80
Earth masses
0500 M⊕
Orbital Period
38.4
days
0.1d10,000d
Distance
53.6
parsecs
Nearby10,000 pc
Equilibrium Temp
540
K
150 K3,500 K
Radius (Earth radii)
3.00
Mass (Earth masses)
2.80
Measured
Equilibrium Temperature
540 K
Orbital Period
38.35 days
Distance from Earth
53.6 pc (~175 ly)
Spectral Type
G9 V
Temperature
5348 K
Mass (Solar)
0.81 M☉
Radius (Solar)
0.94 R☉
Luminosity
-0.19 log L☉
Planets in System
6
Stars in System
1
Coordinates (RA, Dec)
302.0256°, 66.8503°
Discovery Method
Transit
Discovery Year
2020
Data Sources
Source ID: HD 191939 d