Exoplanet

K2-391 b

Orbiting K2-391

Overview

K2-391 b is an exoplanet orbiting the star K2-391, discovered in 2022 using the Transit method. It is a Earth-sized world.

Key Measurements

Radius

1.37

Earth radii

015 R⊕

Mass (est.)

2.61

Earth masses

0500 M⊕

Orbital Period

4.6

days

0.1d10,000d

Distance

507.9

parsecs

Nearby10,000 pc

Radius (Earth radii)

1.37

Mass (Earth masses)

2.61

Estimated

Equilibrium Temperature

Unknown

Parameter source: Christiansen et al. 2022

Orbital Period

4.623+0.000−0.000days

Distance from Earth

507.9 pc (~1657 ly)

Spectral Type

Unknown

Temperature

5543 K

Mass (Solar)

0.76 M☉

Radius (Solar)

0.57 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

356.2260°, -7.7015°

Discovery Method

Transit

Discovery Year

2022

Data Sources
NASA Exoplanet Archive

Source ID: K2-391 b

System Context

K2-391 b orbits K2-391 and was reported in 2022 and was detected with the Transit method.

Published measurements list a radius of 1.37 Earth radii, a mass of 2.61 Earth masses (estimated), and an orbital period of 4.62 days.

Catalog data places the system at about 507.9 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 K2-391