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HD 181342 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 181342 b

Confirmed exoplanet · Gas Giant

HD 181342 b

Orbiting HD 181342

Discovered in 2009 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 181342 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,009
Method: Radial Velocity
Radius: 13.2 R⊕
Mass: 807.2882 M⊕
Orbit: 564.1 days
Distance: 120.391 pc

Planet profile

Orbit and physical properties

Orbital period: 564.1 days
Semi-major axis: 1.592 AU
Eccentricity: 0.022
Radius: 13.2 Earth radii
Mass: 807.2882 Earth masses
Mass provenance: Msini
Density: 1.93 g/cm³
Equilibrium temperature: 410.15 K
Insolation: 5.836 Earth flux

Host system

Star and system properties

Host star: HD 181342
Stars in system: 1
Known planets in system: 1
Spectral type: K0 III
Stellar temperature: 4,945 K
Stellar radius: 4.71 R☉
Stellar mass: 1.69 M☉
Stellar metallicity: 0.26 dex
Stellar age: 2 Gyr
Distance: 120.391 parsecs
Right ascension: 19h21m04.18s
Declination: -23d37m10.92s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,009
Publication date: 2010-05
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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