Exoplanet

NGTS-31 b

Orbiting NGTS-31

Overview

NGTS-31 b is an exoplanet orbiting the star NGTS-31, discovered in 2025 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

18.05

Earth radii

015 R⊕

Mass

355.97

Earth masses

0500 M⊕

Orbital Period

4.2

days

0.1d10,000d

Distance

497.4

parsecs

Nearby10,000 pc

Equilibrium Temp

1410

K

150 K3,500 K

Radius (Earth radii)

18.05

Mass (Earth masses)

355.97

Measured

Equilibrium Temperature

1410 K

Parameter source: Vines et al. 2025

Orbital Period

4.163+0.000−0.000days

Semi-Major Axis

0.0640+0.0080−0.0080au

Planet Mass (Earth masses)

355.97+38.14−38.14

Planet Mass (Jupiter masses)

1.1200+0.1200−0.1200

Eccentricity

0.0000

Argument of Periastron

90.0deg

Radial Velocity Semi-Amplitude

146.63+8.26−5.97m/s

Distance from Earth

497.4 pc (~1622 ly)

Spectral Type

Unknown

Temperature

5710 K

Mass (Solar)

0.96 M☉

Radius (Solar)

1.70 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

80.4213°, -38.6568°

Discovery Method

Transit

Discovery Year

2025

Data Sources
NASA Exoplanet Archive

Source ID: NGTS-31 b

System Context

NGTS-31 b orbits NGTS-31 and was reported in 2025 and was detected with the Transit method.

Published measurements list a radius of 18.05 Earth radii, a mass of 355.97 Earth masses, an orbital period of 4.16 days, and an equilibrium temperature near 1,410 K.

Catalog data places the system at about 497.4 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 NGTS-31