Kepler-391 b
Orbiting Kepler-391
Kepler-391 b is an exoplanet orbiting the star Kepler-391, discovered in 2014 using the Transit method. It is a Mini-Neptune world.
Radius
2.50
Earth radii
Mass
1100.00
Earth masses
Orbital Period
7.4
days
Distance
869.2
parsecs
Equilibrium Temp
930
K
Radius (Earth radii)
2.50
Mass (Earth masses)
1100.00
Measured
Equilibrium Temperature
930 K
Parameter source: Jofré et al. 2020
Orbital Period
7.418+0.003−0.004days
Semi-Major Axis
0.0830+0.0120−0.0130au
Planet Mass (Earth masses)
1100.00
Planet Mass (Jupiter masses)
3.4610
Eccentricity
<0.46
Argument of Periastron
103.0+53.0−46.0deg
Radial Velocity Semi-Amplitude
<340m/s
Distance from Earth
869.2 pc (~2835 ly)
Spectral Type
K2 III-IV
Temperature
5038 K
Mass (Solar)
1.27 M☉
Radius (Solar)
2.88 R☉
Luminosity
0.66 log L☉
Planets in System
2
Stars in System
1
Coordinates (RA, Dec)
290.6219°, 51.0573°
Discovery Method
Transit
Discovery Year
2014
Source ID: Kepler-391 b
Kepler-391 b orbits Kepler-391 and was reported in 2014 and was detected with the Transit method.
Published measurements list a radius of 2.5 Earth radii, a mass of 1,100 Earth masses, an orbital period of 7.42 days, and an equilibrium temperature near 930 K.
Catalog data places the system at about 869.2 parsecs from Earth, a host star classified as K2 III-IV, and 2 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open Kepler-391More planets in this system