Exoplanet

Kepler-8 b

Orbiting Kepler-8

Overview

Kepler-8 b is an exoplanet orbiting the star Kepler-8, discovered in 2010 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

15.87

Earth radii

015 R⊕

Mass

187.52

Earth masses

0500 M⊕

Orbital Period

3.5

days

0.1d10,000d

Distance

1021.9

parsecs

Nearby10,000 pc

Equilibrium Temp

1680

K

150 K3,500 K

Radius (Earth radii)

15.87

Mass (Earth masses)

187.52

Measured

Equilibrium Temperature

1680 K

Parameter source: Esteves et al. 2015

Orbital Period

3.522+0.000−0.000days

Semi-Major Axis

0.0474+0.0018−0.0021au

Planet Mass (Earth masses)

187.52+41.32−38.14

Planet Mass (Jupiter masses)

0.5900+0.1300−0.1200

Radial Velocity Semi-Amplitude

68.40+12.00−12.00m/s

Distance from Earth

1021.9 pc (~3333 ly)

Spectral Type

Unknown

Temperature

6213 K

Mass (Solar)

1.21 M☉

Radius (Solar)

1.49 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

281.2881°, 42.4511°

Discovery Method

Transit

Discovery Year

2010

Data Sources
NASA Exoplanet Archive

Source ID: Kepler-8 b

System Context

Kepler-8 b orbits Kepler-8 and was reported in 2010 and was detected with the Transit method.

Published measurements list a radius of 15.87 Earth radii, a mass of 187.52 Earth masses, an orbital period of 3.52 days, and an equilibrium temperature near 1,680 K.

Catalog data places the system at about 1,021.9 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 Kepler-8