Skip to main content

The K2-38 System

2 planets Scorpius

K2-38 is a planetary system in the constellation Scorpius hosting 2 confirmed exoplanets, about 629 light-years from Earth.

Size Comparison: The Planets of K2-38

Earth1.00 R⊕b1.54 R⊕c2.29 R⊕
Compare any two worlds side by side in the Exoplanet Explorer app ›

K2-38: Star and Habitable Zone

K2-38

Spectral type
G2 V
Surface temperature
5,731 K (Sun: 5,772 K)
Mass
1.03 M☉
Radius
1.06 R☉
Luminosity
1.0900 L☉
Age
6.7 billion years (Sun: 4.6)
K2-38 b K2-38 c
Too hot Optimistic habitable zone Conservative habitable zone Too cold

Habitable zone of K2-38: 0.786–1.853 AU (conservative: 0.995–1.757 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.

See the full interactive habitable-zone view in the Exoplanet Explorer app ›

All 2 Planets in the K2-38 System

PlanetTypeOrbitRadiusESIDiscovered
K2-38 bSuper Earth4.0 d1.54 R⊕0.272016
K2-38 cSuper Earth11 d2.29 R⊕0.242016

Discovery History

The first planet found here, K2-38 b, was discovered in 2016 using the transit method.

Frequently Asked Questions About K2-38

How many planets does K2-38 have?

K2-38 has 2 confirmed exoplanets. More may await discovery.

Are any planets in the K2-38 system habitable?

None of the known planets in K2-38 orbit within the star's habitable zone.

How far away is K2-38?

K2-38 is about 629 light-years from Earth in the constellation Scorpius.

Exoplanet Explorer app icon

Explore the K2-38 system in the app

Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.

Download on the App Store