HD 21520 b
Orbiting HD 21520
HD 21520 b is an exoplanet orbiting the star HD 21520, discovered in 2024 using the Transit method. It is a Mini-Neptune world.
Radius
2.70
Earth radii
Mass
17.70
Earth masses
Orbital Period
25.1
days
Distance
79.2
parsecs
Equilibrium Temp
637
K
Radius (Earth radii)
2.70
Mass (Earth masses)
17.70
Measured
Equilibrium Temperature
637 K
Orbital Period
25.13 days
Distance from Earth
79.2 pc (~258 ly)
Spectral Type
Unknown
Temperature
5871 K
Mass (Solar)
1.09 M☉
Radius (Solar)
1.04 R☉
Luminosity
0.07 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
51.6403°, -43.6137°
Discovery Method
Transit
Discovery Year
2024
Source ID: HD 21520 b
HD 21520 b orbits HD 21520 and was reported in 2024 and was detected with the Transit method.
Published measurements list a radius of 2.7 Earth radii, a mass of 17.7 Earth masses, an orbital period of 25.13 days, and an equilibrium temperature near 637 K.
Catalog data places the system at about 79.2 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 HD 21520