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GJ 887 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/GJ 887 b

Confirmed exoplanet · Super Earth

GJ 887 b

Orbiting GJ 887

Discovered in 2020 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic super earth catalog artwork; not a direct image of GJ 887 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,020
Method: Radial Velocity
Radius: 1.8 R⊕
Mass: 3.9 M⊕
Orbit: 9.2619 days
Distance: 3.28679 pc

Planet profile

Orbit and physical properties

Orbital period: 9.2619 days
Semi-major axis: 0.0683 AU
Eccentricity: 0.14
Radius: 1.8 Earth radii
Mass: 3.9 Earth masses
Mass provenance: Msini
Density: 3.67 g/cm³
Equilibrium temperature: 426 K
Insolation: 7.8 Earth flux

Host system

Star and system properties

Host star: GJ 887
Stars in system: 1
Known planets in system: 4
Spectral type: M1 V
Stellar temperature: 3,688 K
Stellar radius: 0.468 R☉
Stellar mass: 0.495 M☉
Stellar metallicity: -0.06 dex
Stellar age: 2.9 Gyr
Distance: 3.28679 parsecs
Right ascension: 23h06m00.66s
Declination: -35d50m50.46s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,020
Publication date: 2020-06
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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