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K2-138 d

Host star K2-138 • 2.46 R⊕ • 5.40 d orbit

Records

4

archive rows

Discovery

Transit

Radius

2.46 R⊕

median non-null value

Mass

4.35 M⊕

median non-null value

K2-138

888 K equilibrium

Quick Summary

Fast scan of the current planet profile

This first pass still reads from the currently available detail payload. Canonical adopted summaries will replace first-row values in the next backend pass.

Host Star

K2-138

Discovery

Transit

Year

2017

Period

5.40 day

Radius

2.66 Rearth

Mass

Eq. Temp

Scale Comparison

Radius against familiar reference worlds

Current adopted radius: 2.46 R⊕ • circles scaled linearly by radius

Earth

1.0 R⊕ baseline

K2-138 d

2.46 R⊕

Jupiter

11.2 R⊕ reference

Provenance

Underlying measurements and references

Evidence Summary

Rows

4

Refs

4

Methods

1

Discoverystable

4 values • 1 distinct

Facilitystable

4 values • 1 distinct

Perioddisputed

4 values • 2 distinct

Radiusdisputed

3 values • 3 distinct

Massdisputed

2 values • 2 distinct

Eq. Tempstable

1 values • 1 distinct

YearMethodFacilityTelescopePeriodRadiusMassEq. TempReference
2017TransitK20.95 m Kepler Telescope5.40 day2.66 RearthChristiansen et al. 2018
2017TransitK20.95 m Kepler Telescope5.40 day2.46 Rearth888 KHardegree-Ullman et al. 2021
2017TransitK20.95 m Kepler Telescope5.41 day0.78 MearthVivien et al. 2024
2017TransitK20.95 m Kepler Telescope5.40 day2.39 Rearth7.92 MearthLopez et al. 2019