Exoplanet

TOI-421 b

Orbiting TOI-421

Overview

TOI-421 b is an exoplanet orbiting the star TOI-421, discovered in 2020 using the Transit method. It is a Mini-Neptune world.

Key Measurements

Radius

2.64

Earth radii

015 R⊕

Mass

6.70

Earth masses

0500 M⊕

Orbital Period

5.2

days

0.1d10,000d

Distance

74.8

parsecs

Nearby10,000 pc

Equilibrium Temp

922

K

150 K3,500 K

Radius (Earth radii)

2.64

Mass (Earth masses)

6.70

Measured

Equilibrium Temperature

922 K

Orbital Period

5.20 days

Distance from Earth

74.8 pc (~244 ly)

Spectral Type

G9 V

Temperature

5291 K

Mass (Solar)

0.83 M☉

Radius (Solar)

0.87 R☉

Luminosity

Unknown

Planets in System

2

Stars in System

2

Coordinates (RA, Dec)

81.8533°, -14.2767°

Discovery Method

Transit

Discovery Year

2020

Data Sources

Source ID: TOI-421 b

System Context

TOI-421 b orbits TOI-421 and was reported in 2020 and was detected with the Transit method.

Published measurements list a radius of 2.64 Earth radii, a mass of 6.7 Earth masses, an orbital period of 5.2 days, and an equilibrium temperature near 922 K.

Catalog data places the system at about 74.8 parsecs from Earth, a host star classified as G9 V, 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 TOI-421

More planets in this system