Exoplanet

NGTS-38 b

Orbiting NGTS-38

Overview

NGTS-38 b is an exoplanet orbiting the star NGTS-38, discovered in 2026 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

12.12

Earth radii

015 R⊕

Mass

1516.04

Earth masses

0500 M⊕

Orbital Period

180.5

days

0.1d10,000d

Distance

268.6

parsecs

Nearby10,000 pc

Equilibrium Temp

457

K

150 K3,500 K

Radius (Earth radii)

12.12

Mass (Earth masses)

1516.04

Measured

Equilibrium Temperature

457 K

Parameter source: Rodel et al. 2026

Orbital Period

180.528+0.000−0.000days

Semi-Major Axis

0.6970+0.0350−0.0350au

Planet Mass (Earth masses)

1516.04+123.95−117.60

Planet Mass (Jupiter masses)

4.7700+0.3900−0.3700

Eccentricity

0.3086+0.0100−0.0100

Argument of Periastron

278.2+0.6−0.6deg

Radial Velocity Semi-Amplitude

137.30+1.70−1.70m/s

Distance from Earth

268.6 pc (~876 ly)

Spectral Type

Unknown

Temperature

6310 K

Mass (Solar)

1.46 M☉

Radius (Solar)

1.88 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

108.7148°, -29.4306°

Discovery Method

Transit

Discovery Year

2026

Data Sources
NASA Exoplanet Archive

Source ID: NGTS-38 b

System Context

NGTS-38 b orbits NGTS-38 and was reported in 2026 and was detected with the Transit method.

Published measurements list a radius of 12.12 Earth radii, a mass of 1,516.04 Earth masses, an orbital period of 180.53 days, and an equilibrium temperature near 457 K.

Catalog data places the system at about 268.6 parsecs from Earth and 1 known planet in the system.