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HD 219828 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 219828 b

Confirmed exoplanet · Neptune Like

HD 219828 b

Orbiting HD 219828

Discovered in 2007 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 219828 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,007
Method: Radial Velocity
Radius: 4.59 R⊕
Mass: 19.069704 M⊕
Orbit: 3.83483 days
Distance: 73.114 pc

Planet profile

Orbit and physical properties

Orbital period: 3.83483 days
Semi-major axis: 0.049 AU
Eccentricity: 0.091
Radius: 4.59 Earth radii
Mass: 19.069704 Earth masses
Mass provenance: Msini
Density: 1.08 g/cm³
Equilibrium temperature: 1,602.83 K
Insolation: 1,095.4885 Earth flux

Host system

Star and system properties

Host star: HD 219828
Stars in system: 1
Known planets in system: 2
Spectral type: G0 IV
Stellar temperature: 5,891 K
Stellar radius: 1.56 R☉
Stellar mass: 1.04 M☉
Stellar metallicity: 0.19 dex
Stellar age: 5.69 Gyr
Distance: 73.114 parsecs
Right ascension: 23h18m46.73s
Declination: +18d38m44.71s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,007
Publication date: 2007-05
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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