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K2-189 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/K2-189 b

Confirmed exoplanet · Terrestrial

K2-189 b

Orbiting K2-189

Discovered in 2018 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 K2-189 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,018
Method: Transit
Radius: 1.403 R⊕
Mass: 2.55 M⊕
Orbit: 2.58812 days
Distance: 242.113 pc

Planet profile

Orbit and physical properties

Orbital period: 2.58812 days
Semi-major axis: 0.0361 AU
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 1.403 Earth radii
Mass: 2.55 Earth masses
Mass provenance: M-R relationship
Density: 5.07 g/cm³
Equilibrium temperature: 1,203 K
Insolation: 497 Earth flux

Host system

Star and system properties

Host star: K2-189
Stars in system: 1
Known planets in system: 2
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 5,442 K
Stellar radius: 0.879 R☉
Stellar mass: 0.85 M☉
Stellar metallicity: -0.1 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 242.113 parsecs
Right ascension: 13h34m29.15s
Declination: -15d02m11.46s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,018
Publication date: 2018-03
Discovery locale: Space
Facility: K2
Telescope: 0.95 m Kepler Telescope
Instrument: Kepler CCD Array
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from K2-189 b.

Generic terrestrial catalog artwork; not a direct image of K2-189 b — Apex Andromeda catalog artwork