Exoplanet

TOI-2128 b

Orbiting TOI-2128

Overview

TOI-2128 b is an exoplanet orbiting the star TOI-2128, discovered in 2024 using the Transit method. It is a Super-Earth world.

Key Measurements

Radius

2.09

Earth radii

015 R⊕

Mass

4.50

Earth masses

0500 M⊕

Orbital Period

16.3

days

0.1d10,000d

Distance

36.6

parsecs

Nearby10,000 pc

Equilibrium Temp

781

K

150 K3,500 K

Radius (Earth radii)

2.09

Mass (Earth masses)

4.50

Measured

Equilibrium Temperature

781 K

Parameter source: Polanski et al. 2024

Orbital Period

16.341+0.000−0.000days

Semi-Major Axis

0.1270+0.0030−0.0030au

Planet Mass (Earth masses)

4.50+2.00−2.00

Planet Mass (Jupiter masses)

0.0142+0.0063−0.0063

Eccentricity

0.0000

Argument of Periastron

90.0deg

Radial Velocity Semi-Amplitude

1.10+0.50−0.50m/s

Distance from Earth

36.6 pc (~119 ly)

Spectral Type

Unknown

Temperature

5968 K

Mass (Solar)

1.03 M☉

Radius (Solar)

1.12 R☉

Luminosity

0.16 log L☉

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

256.9818°, 32.1053°

Discovery Method

Transit

Discovery Year

2024

Data Sources
NASA Exoplanet Archive

Source ID: TOI-2128 b

System Context

TOI-2128 b orbits TOI-2128 and was reported in 2024 and was detected with the Transit method.

Published measurements list a radius of 2.09 Earth radii, a mass of 4.5 Earth masses, an orbital period of 16.34 days, and an equilibrium temperature near 781 K.

Catalog data places the system at about 36.6 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-2128