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HIP 111909 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HIP 111909 b

Confirmed exoplanet · Gas Giant

HIP 111909 b

Orbiting HIP 111909

Discovered in 2025 using Radial Velocity. 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 HIP 111909 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Radial Velocity
Radius: 13.7 R⊕
Mass: 384.572372 M⊕
Orbit: 487.08 days
Distance: 88.077 pc

Planet profile

Orbit and physical properties

Orbital period: 487.08 days
Semi-major axis: 1.32 AU
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 13.7 Earth radii
Mass: 384.572372 Earth masses
Mass provenance: Msini
Density: 0.822 g/cm³
Equilibrium temperature: 436.91 K
Insolation: 6.0097 Earth flux

Host system

Star and system properties

Host star: HIP 111909
Stars in system: 1
Known planets in system: 2
Spectral type: K1 III
Stellar temperature: 4,891 K
Stellar radius: 4.53 R☉
Stellar mass: 1.28 M☉
Stellar metallicity: -0.01 dex
Stellar age: 4.3 Gyr
Distance: 88.077 parsecs
Right ascension: 22h40m07.30s
Declination: -49d35m54.74s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,025
Publication date: 2025-12
Discovery locale: Ground
Facility: Multiple Observatories
Telescope: Multiple Telescopes
Instrument: Multiple Instruments
NASA Exoplanet Archive: Open composite record ↗

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