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HD 152581 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 152581 b

Confirmed exoplanet · Gas Giant

HD 152581 b

Orbiting HD 152581

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 152581 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,011
Method: Radial Velocity
Radius: 13.4 R⊕
Mass: 594.02427 M⊕
Orbit: 686.5 days
Distance: 165.76 pc

Planet profile

Orbit and physical properties

Orbital period: 686.5 days
Semi-major axis: 1.66 AU
Eccentricity: 0.04
Radius: 13.4 Earth radii
Mass: 594.02427 Earth masses
Mass provenance: Msini
Density: 1.36 g/cm³
Equilibrium temperature: 426.55 K
Insolation: 5.4072 Earth flux

Host system

Star and system properties

Host star: HD 152581
Stars in system: 1
Known planets in system: 1
Spectral type: K0
Stellar temperature: 5,027 K
Stellar radius: 5.14 R☉
Stellar mass: 1.3 M☉
Stellar metallicity: -0.46 dex
Stellar age: 12 Gyr
Distance: 165.76 parsecs
Right ascension: 16h53m43.59s
Declination: +11d58m25.26s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,011
Publication date: 2011-12
Discovery locale: Ground
Facility: W. M. Keck Observatory
Telescope: 10 m Keck I Telescope
Instrument: HIRES Spectrometer
NASA Exoplanet Archive: Open composite record ↗

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