Exoplanet
Kepler-4 b
Orbiting Kepler-4
Overview
Kepler-4 b is an exoplanet orbiting the star Kepler-4, discovered in 2009 using the Transit method. It is a Neptune-sized world.
Key Measurements
Radius
4.00
Earth radii
015 R⊕
Mass
24.47
Earth masses
0500 M⊕
Orbital Period
3.2
days
0.1d10,000d
Distance
487.9
parsecs
Nearby10,000 pc
Equilibrium Temp
1650
K
150 K3,500 K
Radius (Earth radii)
4.00
Mass (Earth masses)
24.47
Measured
Equilibrium Temperature
1650 K
Orbital Period
3.21 days
Distance from Earth
487.9 pc (~1591 ly)
Spectral Type
Unknown
Temperature
5857 K
Mass (Solar)
1.22 M☉
Radius (Solar)
1.49 R☉
Luminosity
0.35 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
285.6154°, 50.1358°
Discovery Method
Transit
Discovery Year
2009
Data Sources
Source ID: Kepler-4 b