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K2-128 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/K2-128 b

Confirmed exoplanet · Terrestrial

K2-128 b

Orbiting K2-128

Discovered in 2017 using Transit. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic terrestrial catalog artwork; not a direct image of K2-128 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,017
Method: Transit
Radius: 1.42 R⊕
Mass: 2.6 M⊕
Orbit: 5.675819 days
Distance: 114.637 pc

Planet profile

Orbit and physical properties

Orbital period: 5.675819 days
Semi-major axis: 0.056 AU
Eccentricity: 0.23
Radius: 1.42 Earth radii
Mass: 2.6 Earth masses
Mass provenance: M-R relationship
Density: 4.99 g/cm³
Equilibrium temperature: 803.1 K
Insolation: 68.8 Earth flux

Host system

Star and system properties

Host star: K2-128
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 4,469.51 K
Stellar radius: 0.777569 R☉
Stellar mass: 0.711248 M☉
Stellar metallicity: -0.26 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 114.637 parsecs
Right ascension: 13h37m45.04s
Declination: -08d35m49.51s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,017
Publication date: 2017-11
Discovery locale: Space
Facility: K2
Telescope: 0.95 m Kepler Telescope
Instrument: Kepler CCD Array
NASA Exoplanet Archive: Open composite record ↗

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