HD 191939 d
Orbiting HD 191939
HD 191939 d is an exoplanet orbiting the star HD 191939, discovered in 2020 using the Transit method. It is a Mini-Neptune world.
Radius
3.00
Earth radii
Mass
2.80
Earth masses
Orbital Period
38.4
days
Distance
53.6
parsecs
Equilibrium Temp
540
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
Source ID: HD 191939 d
HD 191939 d orbits HD 191939 and was reported in 2020 and was detected with the Transit method.
Published measurements list a radius of 3 Earth radii, a mass of 2.8 Earth masses, an orbital period of 38.35 days, and an equilibrium temperature near 540 K.
Catalog data places the system at about 53.6 parsecs from Earth, a host star classified as G9 V, and 6 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HD 191939More planets in this system