Exoplanet

Kepler-1981 b

Orbiting Kepler-1981

Overview

Kepler-1981 b is an exoplanet orbiting the star Kepler-1981, discovered in 2023 using the Transit method. It is a Neptune-sized world.

Key Measurements

Radius

9.23

Earth radii

015 R⊕

Mass (est.)

66.51

Earth masses

0500 M⊕

Orbital Period

453.5

days

0.1d10,000d

Distance

659.4

parsecs

Nearby10,000 pc

Equilibrium Temp

390

K

150 K3,500 K

Radius (Earth radii)

9.23

Mass (Earth masses)

66.51

Estimated

Equilibrium Temperature

390 K

Orbital Period

453.54 days

Distance from Earth

659.4 pc (~2151 ly)

Spectral Type

Unknown

Temperature

5874 K

Mass (Solar)

1.52 M☉

Radius (Solar)

3.01 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

287.9755°, 38.7403°

Discovery Method

Transit

Discovery Year

2023

Data Sources
NASA Exoplanet Archive

Source ID: Kepler-1981 b

System Context

Kepler-1981 b orbits Kepler-1981 and was reported in 2023 and was detected with the Transit method.

Published measurements list a radius of 9.23 Earth radii, a mass of 66.51 Earth masses (estimated), an orbital period of 453.54 days, and an equilibrium temperature near 390 K.

Catalog data places the system at about 659.4 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-1981