Exoplanet

TOI-921 b

Orbiting TOI-921

Overview

TOI-921 b is an exoplanet orbiting the star TOI-921, discovered in 2026 using the Transit method. It is a Mini-Neptune world.

Key Measurements

Radius

3.53

Earth radii

015 R⊕

Mass (est.)

13.03

Earth masses

0500 M⊕

Orbital Period

5.1

days

0.1d10,000d

Distance

294.0

parsecs

Nearby10,000 pc

Radius (Earth radii)

3.53

Mass (Earth masses)

13.03

Estimated

Equilibrium Temperature

Unknown

Parameter source: Lafarga et al. 2026

Orbital Period

5.129+0.000−0.000days

Distance from Earth

294.0 pc (~959 ly)

Spectral Type

Unknown

Temperature

6012 K

Mass (Solar)

Unknown

Radius (Solar)

1.14 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

99.6742°, -56.2205°

Discovery Method

Transit

Discovery Year

2026

Data Sources
NASA Exoplanet Archive

Source ID: TOI-921 b

System Context

TOI-921 b orbits TOI-921 and was reported in 2026 and was detected with the Transit method.

Published measurements list a radius of 3.53 Earth radii, a mass of 13.03 Earth masses (estimated), and an orbital period of 5.13 days.

Catalog data places the system at about 294 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 TOI-921