Kepler-31 b
Orbiting Kepler-31
Kepler-31 b is an exoplanet orbiting the star Kepler-31, discovered in 2011 using the Transit method. It is a Neptune-sized world.
Radius
5.50
Earth radii
Mass (est.)
27.61
Earth masses
Orbital Period
20.9
days
Distance
1664.6
parsecs
Radius (Earth radii)
5.50
Mass (Earth masses)
27.61
Estimated
Equilibrium Temperature
Unknown
Parameter source: Fabrycky et al. 2012
Orbital Period
20.861+0.000−0.000days
Semi-Major Axis
0.1600au
Distance from Earth
1664.6 pc (~5429 ly)
Spectral Type
Unknown
Temperature
6340 K
Mass (Solar)
1.21 M☉
Radius (Solar)
1.22 R☉
Luminosity
Unknown
Planets in System
3
Stars in System
1
Coordinates (RA, Dec)
294.0230°, 45.8531°
Discovery Method
Transit
Discovery Year
2011
Source ID: Kepler-31 b
Kepler-31 b orbits Kepler-31 and was reported in 2011 and was detected with the Transit method.
Published measurements list a radius of 5.5 Earth radii, a mass of 27.61 Earth masses (estimated), and an orbital period of 20.86 days.
Catalog data places the system at about 1,664.6 parsecs from Earth and 3 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open Kepler-31More planets in this system