Exoplanet

TOI-5599 b

Orbiting TOI-5599

Overview

TOI-5599 b is an exoplanet orbiting the star TOI-5599, discovered in 2026 using the Transit method. It is a Neptune-sized world.

Key Measurements

Radius

7.19

Earth radii

015 R⊕

Mass (est.)

43.51

Earth masses

0500 M⊕

Orbital Period

5.4

days

0.1d10,000d

Distance

547.9

parsecs

Nearby10,000 pc

Radius (Earth radii)

7.19

Mass (Earth masses)

43.51

Estimated

Equilibrium Temperature

Unknown

Parameter source: Lafarga et al. 2026

Orbital Period

5.437+0.000−0.000days

Distance from Earth

547.9 pc (~1787 ly)

Spectral Type

Unknown

Temperature

6137 K

Mass (Solar)

Unknown

Radius (Solar)

1.91 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

199.3262°, 55.6815°

Discovery Method

Transit

Discovery Year

2026

Data Sources
NASA Exoplanet Archive

Source ID: TOI-5599 b

System Context

TOI-5599 b orbits TOI-5599 and was reported in 2026 and was detected with the Transit method.

Published measurements list a radius of 7.19 Earth radii, a mass of 43.51 Earth masses (estimated), and an orbital period of 5.44 days.

Catalog data places the system at about 547.9 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-5599