Exoplanet

TOI-4552 b

Orbiting TOI-4552

Overview

TOI-4552 b is an exoplanet orbiting the star TOI-4552, discovered in 2026 using the Transit method. It is a Earth-sized world.

Key Measurements

Radius

1.11

Earth radii

015 R⊕

Mass

1.83

Earth masses

0500 M⊕

Orbital Period

0.3

days

0.1d10,000d

Distance

27.3

parsecs

Nearby10,000 pc

Equilibrium Temp

1122

K

150 K3,500 K

Radius (Earth radii)

1.11

Mass (Earth masses)

1.83

Measured

Equilibrium Temperature

1122 K

Parameter source: Srivastava et al. 2026

Orbital Period

0.301+0.000−0.000days

Semi-Major Axis

0.0056+0.0000−0.0000au

Planet Mass (Earth masses)

1.83+0.47−0.47

Planet Mass (Jupiter masses)

0.0058+0.0015−0.0015

Eccentricity

0.0000

Argument of Periastron

90.0deg

Radial Velocity Semi-Amplitude

4.32+1.04−1.08m/s

Distance from Earth

27.3 pc (~89 ly)

Spectral Type

M4.5 V

Temperature

3258 K

Mass (Solar)

0.26 M☉

Radius (Solar)

0.29 R☉

Luminosity

-2.08 log L☉

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

264.7143°, -47.6370°

Discovery Method

Transit

Discovery Year

2026

Data Sources
NASA Exoplanet Archive

Source ID: TOI-4552 b

System Context

TOI-4552 b orbits TOI-4552 and was reported in 2026 and was detected with the Transit method.

Published measurements list a radius of 1.11 Earth radii, a mass of 1.83 Earth masses, an orbital period of 0.3 days, and an equilibrium temperature near 1,122 K.

Catalog data places the system at about 27.3 parsecs from Earth, a host star classified as M4.5 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 TOI-4552