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KOINTREAU-1 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/KOINTREAU-1 b

Confirmed exoplanet · Gas Giant

KOINTREAU-1 b

Orbiting XEST 17-036

Discovered in 2026 using Imaging. 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 KOINTREAU-1 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,026
Method: Imaging
Radius: 12.4 R⊕
Mass: 3,368.981114 M⊕
Orbit: Not reported by the NASA Exoplanet Archive
Distance: 158.618 pc

Planet profile

Orbit and physical properties

Orbital period: Not reported by the NASA Exoplanet Archive
Semi-major axis: 690 AU
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 12.4 Earth radii
Mass: 3,368.981114 Earth masses
Mass provenance: Mass
Density: 9.71 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: XEST 17-036
Stars in system: 1
Known planets in system: 1
Spectral type: M4
Stellar temperature: 3,551 K
Stellar radius: Not reported by the NASA Exoplanet Archive
Stellar mass: 0.26 M☉
Stellar metallicity: -0.15 dex
Stellar age: 0.0033 Gyr
Distance: 158.618 parsecs
Right ascension: 04h33m26.23s
Declination: +22d45m29.00s

Discovery

Detection and provenance

Discovery method: Imaging
Discovery year: 2,026
Publication date: 2026-02
Discovery locale: Ground
Facility: W. M. Keck Observatory
Telescope: 10 m Keck II Telescope
Instrument: NIRC2 Camera
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from KOINTREAU-1 b.

Generic gas giant catalog artwork; not a direct image of KOINTREAU-1 b — Apex Andromeda catalog artwork