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Kepler-421 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/Kepler-421 b

Confirmed exoplanet · Neptune Like

Kepler-421 b

Orbiting Kepler-421

Discovered in 2014 using Transit. 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 Kepler-421 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,014
Method: Transit
Radius: 4.16 R⊕
Mass: 16.1 M⊕
Orbit: 704.1984 days
Distance: 348.558 pc

Planet profile

Orbit and physical properties

Orbital period: 704.1984 days
Semi-major axis: 1.219 AU
Eccentricity: 0.041
Radius: 4.16 Earth radii
Mass: 16.1 Earth masses
Mass provenance: M-R relationship
Density: 1.23 g/cm³
Equilibrium temperature: 185 K
Insolation: 0.2 Earth flux

Host system

Star and system properties

Host star: Kepler-421
Stars in system: 1
Known planets in system: 1
Spectral type: G9/K0
Stellar temperature: 5,308 K
Stellar radius: 0.757 R☉
Stellar mass: 0.794 M☉
Stellar metallicity: -0.25 dex
Stellar age: 4 Gyr
Distance: 348.558 parsecs
Right ascension: 18h53m01.63s
Declination: +45d05m15.66s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,014
Publication date: 2014-07
Discovery locale: Space
Facility: Kepler
Telescope: 0.95 m Kepler Telescope
Instrument: Kepler CCD Array
NASA Exoplanet Archive: Open composite record ↗

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