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K2-157 d | Exoplanets | Apex Andromeda | Apex Andromeda

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Planets/Exoplanets/K2-157 d

Confirmed exoplanet · Neptune Like

K2-157 d

Orbiting K2-157

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

NASA Archive record ↗Back to catalog →

Generic neptune like catalog artwork; not a direct image of K2-157 d — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Radial Velocity
Radius: 5.16 R⊕
Mass: 23.3 M⊕
Orbit: 66.5 days
Distance: 298.373 pc

Planet profile

Orbit and physical properties

Orbital period: 66.5 days
Semi-major axis: 0.309 AU
Eccentricity: 0.5
Radius: 5.16 Earth radii
Mass: 23.3 Earth masses
Mass provenance: Msini
Density: 0.932 g/cm³
Equilibrium temperature: 429.1 K
Insolation: 6.46 Earth flux

Host system

Star and system properties

Host star: K2-157
Stars in system: 1
Known planets in system: 3
Spectral type: G9 V
Stellar temperature: 5,334 K
Stellar radius: 0.86 R☉
Stellar mass: 0.89 M☉
Stellar metallicity: 0.02 dex
Stellar age: 8.8 Gyr
Distance: 298.373 parsecs
Right ascension: 12h15m00.36s
Declination: -05d46m55.26s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,025
Publication date: 2025-07
Discovery locale: Ground
Facility: Paranal Observatory
Telescope: 8.2 m ESO VLT UT3 Melipal Telescope
Instrument: ESPRESSO
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from K2-157 d.

Generic neptune like catalog artwork; not a direct image of K2-157 d — Apex Andromeda catalog artwork