Skip to content

Missions Planets Black Holes 3D Map Agencies Blog About Sign in

Menu

Missions Planets Black Holes 3D Map Agencies Blog About Sign in

Acquiring mission data

Missions Planets Black Holes 3D Map Agencies Blog About apexandromeda.com

This is an independent informational project and is not affiliated with, endorsed by, or sponsored by NASA, ESA, JAXA, Roscosmos, CNSA, ISRO, CSA, or any other space agency. Agency names, logos, and other marks are used for identification where permitted by their respective usage policies.

A passion project from the team behind Apex Rental Pro.

Community discussion

Comments 0

No comments yet. The airlock is open.

Sign in or create an account to comment and vote.

K2-238 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/K2-238 b

Confirmed exoplanet · Gas Giant

K2-238 b

Orbiting K2-238

Discovered in 2018 using Transit. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic gas giant catalog artwork; not a direct image of K2-238 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,018
Method: Transit
Radius: 14.5717 R⊕
Mass: 273.3338 M⊕
Orbit: 3.20466 days
Distance: 537.963 pc

Planet profile

Orbit and physical properties

Orbital period: 3.20466 days
Semi-major axis: 0.046 AU
Eccentricity: 0
Radius: 14.5717 Earth radii
Mass: 273.3338 Earth masses
Mass provenance: Mass
Density: 0.56 g/cm³
Equilibrium temperature: 1,587 K
Insolation: 1,082.6407 Earth flux

Host system

Star and system properties

Host star: K2-238
Stars in system: 1
Known planets in system: 1
Spectral type: G2 V
Stellar temperature: 5,630 K
Stellar radius: 1.59 R☉
Stellar mass: 1.19 M☉
Stellar metallicity: 0.34 dex
Stellar age: 5.63 Gyr
Distance: 537.963 parsecs
Right ascension: 23h10m49.04s
Declination: -07d51m27.21s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,018
Publication date: 2018-08
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 K2-238 b.

Generic gas giant catalog artwork; not a direct image of K2-238 b — Apex Andromeda catalog artwork