Exoplanet

K2-73 b

Orbiting K2-73

Overview

K2-73 b is an exoplanet orbiting the star K2-73, discovered in 2016 using the Transit method. It is a Mini-Neptune world.

Key Measurements

Radius

2.58

Earth radii

015 R⊕

Mass

9.20

Earth masses

0500 M⊕

Orbital Period

7.5

days

0.1d10,000d

Distance

269.2

parsecs

Nearby10,000 pc

Equilibrium Temp

968

K

150 K3,500 K

Radius (Earth radii)

2.58

Mass (Earth masses)

9.20

Measured

Equilibrium Temperature

968 K

Parameter source: Howard et al. 2025

Orbital Period

7.496+0.000−0.000days

Planet Mass (Earth masses)

9.20+3.80−3.70

Planet Mass (Jupiter masses)

0.0289+0.0120−0.0116

Distance from Earth

269.2 pc (~878 ly)

Spectral Type

Unknown

Temperature

5867 K

Mass (Solar)

1.02 M☉

Radius (Solar)

1.06 R☉

Luminosity

Unknown

Planets in System

2

Stars in System

1

Coordinates (RA, Dec)

335.0257°, -9.0561°

Discovery Method

Transit

Discovery Year

2016

Data Sources
NASA Exoplanet Archive

Source ID: K2-73 b

System Context

K2-73 b orbits K2-73 and was reported in 2016 and was detected with the Transit method.

Published measurements list a radius of 2.58 Earth radii, a mass of 9.2 Earth masses, an orbital period of 7.5 days, and an equilibrium temperature near 968 K.

Catalog data places the system at about 269.2 parsecs from Earth 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 K2-73

More planets in this system

K2-73 c