Exoplanet
HD 21520 b
Orbiting HD 21520
Overview
HD 21520 b is an exoplanet orbiting the star HD 21520, discovered in 2024 using the Transit method. It is a Mini-Neptune world.
Key Measurements
Radius
2.70
Earth radii
015 R⊕
Mass
17.70
Earth masses
0500 M⊕
Orbital Period
25.1
days
0.1d10,000d
Distance
79.2
parsecs
Nearby10,000 pc
Equilibrium Temp
637
K
150 K3,500 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
Data Sources
Source ID: HD 21520 b