Exoplanet

NGTS-21 b

Orbiting NGTS-21

Overview

NGTS-21 b is an exoplanet orbiting the star NGTS-21, discovered in 2022 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

14.91

Earth radii

015 R⊕

Mass

750.08

Earth masses

0500 M⊕

Orbital Period

1.5

days

0.1d10,000d

Distance

592.9

parsecs

Nearby10,000 pc

Equilibrium Temp

1357

K

150 K3,500 K

Radius (Earth radii)

14.91

Mass (Earth masses)

750.08

Measured

Equilibrium Temperature

1357 K

Parameter source: Alves et al. 2022

Orbital Period

1.543+0.000−0.000days

Semi-Major Axis

0.0236+0.0005−0.0005au

Planet Mass (Earth masses)

750.08+66.74−66.74

Planet Mass (Jupiter masses)

2.3600+0.2100−0.2100

Eccentricity

0.0000

Argument of Periastron

90.0deg

Radial Velocity Semi-Amplitude

506.00+37.00−37.00m/s

Distance from Earth

592.9 pc (~1934 ly)

Spectral Type

K3 V

Temperature

4660 K

Mass (Solar)

0.72 M☉

Radius (Solar)

0.86 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

311.2583°, -35.4278°

Discovery Method

Transit

Discovery Year

2022

Data Sources
NASA Exoplanet Archive

Source ID: NGTS-21 b

System Context

NGTS-21 b orbits NGTS-21 and was reported in 2022 and was detected with the Transit method.

Published measurements list a radius of 14.91 Earth radii, a mass of 750.08 Earth masses, an orbital period of 1.54 days, and an equilibrium temperature near 1,357 K.

Catalog data places the system at about 592.9 parsecs from Earth, a host star classified as K3 V, 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-21