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HD 90156 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 90156 b

Confirmed exoplanet · Neptune Like

HD 90156 b

Orbiting HD 90156

Discovered in 2011 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 HD 90156 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,011
Method: Radial Velocity
Radius: 4.43 R⊕
Mass: 17.98 M⊕
Orbit: 49.77 days
Distance: 21.9496 pc

Planet profile

Orbit and physical properties

Orbital period: 49.77 days
Semi-major axis: 0.25 AU
Eccentricity: 0.31
Radius: 4.43 Earth radii
Mass: 17.98 Earth masses
Mass provenance: Msini
Density: 1.14 g/cm³
Equilibrium temperature: 518.01 K
Insolation: 11.52 Earth flux

Host system

Star and system properties

Host star: HD 90156
Stars in system: 1
Known planets in system: 1
Spectral type: G5V
Stellar temperature: 5,599 K
Stellar radius: 0.920286 R☉
Stellar mass: 0.84 M☉
Stellar metallicity: -0.24 dex
Stellar age: 4.4 Gyr
Distance: 21.9496 parsecs
Right ascension: 10h23m55.23s
Declination: -29d38m42.37s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,011
Publication date: 2011-02
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: 3.6 m ESO Telescope
Instrument: HARPS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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