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HD 240237 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 240237 b

Confirmed exoplanet · Gas Giant

HD 240237 b

Orbiting HD 240237

Discovered in 2011 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 HD 240237 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,011
Method: Radial Velocity
Radius: 12.2 R⊕
Mass: 5,050.3187 M⊕
Orbit: 745.70001 days
Distance: 933.377 pc

Planet profile

Orbit and physical properties

Orbital period: 745.70001 days
Semi-major axis: 1.92 AU
Eccentricity: 0.4
Radius: 12.2 Earth radii
Mass: 5,050.3187 Earth masses
Mass provenance: Msini
Density: 15.3 g/cm³
Equilibrium temperature: 1,153.09 K
Insolation: 83.8296 Earth flux

Host system

Star and system properties

Host star: HD 240237
Stars in system: 1
Known planets in system: 1
Spectral type: K2 III
Stellar temperature: 3,926 K
Stellar radius: 71.23 R☉
Stellar mass: 8.76 M☉
Stellar metallicity: -0.25 dex
Stellar age: 4.42 Gyr
Distance: 933.377 parsecs
Right ascension: 23h15m42.22s
Declination: +58d02m35.60s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,011
Publication date: 2012-01
Discovery locale: Ground
Facility: McDonald Observatory
Telescope: 9.2 m Hobby-Eberly Telescope
Instrument: High Resolution Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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