Exoplanet

AT2021ueyL b

Orbiting AT2021ueyL

Overview

AT2021ueyL b is an exoplanet orbiting the star AT2021ueyL, discovered in 2025 using the Microlensing method.

Key Measurements

Mass

425.89

Earth masses

0500 M⊕

Orbital Period

4168.7

days

0.1d10,000d

Distance

1040.0

parsecs

Nearby10,000 pc

Radius (Earth radii)

Unknown

Mass (Earth masses)

425.89

Measured

Equilibrium Temperature

Unknown

Orbital Period

4168.69 days

Distance from Earth

1040.0 pc (~3392 ly)

Spectral Type

M V

Temperature

3680 K

Mass (Solar)

0.49 M☉

Radius (Solar)

Unknown

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

324.5450°, 26.4666°

Discovery Method

Microlensing

Discovery Year

2025

Data Sources
NASA Exoplanet Archive

Source ID: AT2021ueyL b

System Context

AT2021ueyL b orbits AT2021ueyL and was reported in 2025 and was detected with the Microlensing method.

Published measurements list a mass of 425.89 Earth masses and an orbital period of 4,168.69 days.

Catalog data places the system at about 1,040 parsecs from Earth, a host star classified as M 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 AT2021ueyL