Exoplanet

TOI-6478 b

Orbiting TOI-6478

Overview

TOI-6478 b is an exoplanet orbiting the star TOI-6478, discovered in 2025 using the Transit method. It is a Neptune-sized world.

Key Measurements

Radius

4.60

Earth radii

015 R⊕

Mass (est.)

20.39

Earth masses

0500 M⊕

Orbital Period

34.0

days

0.1d10,000d

Distance

38.6

parsecs

Nearby10,000 pc

Equilibrium Temp

204

K

150 K3,500 K

Radius (Earth radii)

4.60

Mass (Earth masses)

20.39

Estimated

Equilibrium Temperature

204 K

Orbital Period

34.01 days

Distance from Earth

38.6 pc (~126 ly)

Spectral Type

M4.0+/-0.5

Temperature

3230 K

Mass (Solar)

0.23 M☉

Radius (Solar)

0.23 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

2

Coordinates (RA, Dec)

149.9918°, -16.1598°

Discovery Method

Transit

Discovery Year

2025

Data Sources

Source ID: TOI-6478 b

System Context

TOI-6478 b orbits TOI-6478 and was reported in 2025 and was detected with the Transit method.

Published measurements list a radius of 4.6 Earth radii, a mass of 20.39 Earth masses (estimated), an orbital period of 34.01 days, and an equilibrium temperature near 204 K.

Catalog data places the system at about 38.6 parsecs from Earth, a host star classified as M4.0+/-0.5, 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-6478