Exoplanet

TOI-4640 b

Orbiting TOI-4640

Overview

TOI-4640 b is an exoplanet orbiting the star TOI-4640, discovered in 2026 using the Transit method. It is a Mini-Neptune world.

Key Measurements

Radius

2.84

Earth radii

015 R⊕

Mass (est.)

9.01

Earth masses

0500 M⊕

Orbital Period

2.7

days

0.1d10,000d

Distance

245.1

parsecs

Nearby10,000 pc

Radius (Earth radii)

2.84

Mass (Earth masses)

9.01

Estimated

Equilibrium Temperature

Unknown

Parameter source: Lafarga et al. 2026

Orbital Period

2.686+0.000−0.000days

Distance from Earth

245.1 pc (~799 ly)

Spectral Type

Unknown

Temperature

5743 K

Mass (Solar)

Unknown

Radius (Solar)

1.07 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

38.2053°, 10.0725°

Discovery Method

Transit

Discovery Year

2026

Data Sources
NASA Exoplanet Archive

Source ID: TOI-4640 b

System Context

TOI-4640 b orbits TOI-4640 and was reported in 2026 and was detected with the Transit method.

Published measurements list a radius of 2.84 Earth radii, a mass of 9.01 Earth masses (estimated), and an orbital period of 2.69 days.

Catalog data places the system at about 245.1 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-4640