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AT2021ueyL b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/AT2021ueyL b

Confirmed exoplanet · Gas Giant

AT2021ueyL b

Orbiting AT2021ueyL

Discovered in 2025 using Microlensing. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic gas giant catalog artwork; not a direct image of AT2021ueyL b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Microlensing
Radius: 13.6 R⊕
Mass: 425.890065 M⊕
Orbit: 4,168.69 days
Distance: 1,040 pc

Planet profile

Orbit and physical properties

Orbital period: 4,168.69 days
Semi-major axis: 4.01 AU
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 13.6 Earth radii
Mass: 425.890065 Earth masses
Mass provenance: Mass
Density: 0.93 g/cm³
Equilibrium temperature: Not reported by the NASA Exoplanet Archive
Insolation: Not reported by the NASA Exoplanet Archive

Host system

Star and system properties

Host star: AT2021ueyL
Stars in system: 1
Known planets in system: 1
Spectral type: M V
Stellar temperature: 3,680 K
Stellar radius: Not reported by the NASA Exoplanet Archive
Stellar mass: 0.49 M☉
Stellar metallicity: Not reported by the NASA Exoplanet Archive
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 1,040 parsecs
Right ascension: 21h38m10.81s
Declination: +26d27m59.65s

Discovery

Detection and provenance

Discovery method: Microlensing
Discovery year: 2,025
Publication date: 2025-05
Discovery locale: Multiple Locales
Facility: Multiple Observatories
Telescope: Multiple Telescopes
Instrument: Multiple Instruments
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from AT2021ueyL b.

Generic gas giant catalog artwork; not a direct image of AT2021ueyL b — Apex Andromeda catalog artwork

Community discussion

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