Exoplanet

Kepler-557 b

Orbiting Kepler-557

Overview

Kepler-557 b is an exoplanet orbiting the star Kepler-557, discovered in 2016 using the Transit method. It is a Mini-Neptune world.

Key Measurements

Radius

2.67

Earth radii

015 R⊕

Mass (est.)

8.10

Earth masses

0500 M⊕

Orbital Period

3.7

days

0.1d10,000d

Distance

2097.1

parsecs

Nearby10,000 pc

Radius (Earth radii)

2.67

Mass (Earth masses)

8.10

Estimated

Equilibrium Temperature

Unknown

Parameter source: Morton et al. 2016

Orbital Period

3.706+0.000−0.000days

Distance from Earth

2097.1 pc (~6840 ly)

Spectral Type

Unknown

Temperature

6068 K

Mass (Solar)

1.11 M☉

Radius (Solar)

1.16 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

293.7084°, 41.6151°

Discovery Method

Transit

Discovery Year

2016

Data Sources
NASA Exoplanet Archive

Source ID: Kepler-557 b

System Context

Kepler-557 b orbits Kepler-557 and was reported in 2016 and was detected with the Transit method.

Published measurements list a radius of 2.67 Earth radii, a mass of 8.1 Earth masses (estimated), and an orbital period of 3.71 days.

Catalog data places the system at about 2,097.1 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-557