UPSA Object Registry
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Kepler-138 e

Exoplanet 10 papers
harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.
Right ascension
19h 21m 31.54s
Declination
+43° 17′ 35.0″
Galactic l, b
75.107, 13.17
Magnitude V
13.04
Distance
66.862 pc

Also known as

1 identifiers

Kepler-138e

Planet

NASA Exoplanet Archive, composite parameters
Host starKepler-138 · M1V
DiscoveryTransit Timing Variations, 2022 · Multiple Observatories
Orbital period38.23 d
Semi-major axis0.1803 au
Eccentricity0.112
Radius0.797 R⊕ · 0.0711 R♃
Mass0.43 M⊕ · 0.001353 M♃
Density4.67 g/cm³
Equilibrium temperature292 K
System distance66.862 pc

Recorded parameters

5 quantities with a single published value
ParameterValueUnitUncertainty As publishedSourceReference
Mass 0.43 M_earth ± 0.21 Transit Timing Variations NASA Exoplanet Archive Piaulet et al. 2023
Orbital period 38.23 d ± 0.006 Transit Timing Variations NASA Exoplanet Archive Piaulet et al. 2023
Semi-major axis 0.1803 au ± 0.0014 Transit Timing Variations NASA Exoplanet Archive Piaulet et al. 2023
Eccentricity 0.112 ± 0.018 Transit Timing Variations NASA Exoplanet Archive Piaulet et al. 2023
Equilibrium temperature 292 K ± 5 Transit Timing Variations NASA Exoplanet Archive Piaulet et al. 2023

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
Kepler-138 c Exoplanet 0.003074″ 13.04
Kepler-138 b Exoplanet 0.003074″ 13.04
Kepler-138 d Exoplanet 0.003074″ 13.04
Kepler-138 Eruptive* 0.4732″ 13.17
ATO J290.4061+43.2910 S* Candidate 65.31″ 12.57
UCAC4 667-073397 Star 71.19″ 16.02
2MASS J19214021+4316542 Star 103.1″ —
2MASS J19213153+4319449 Star 129.9″ —
2MASS J19213914+4319225 Star 135.8″ —
UCAC4 667-073427 HorBranch* 150.8″ 11.67
2MASS J19214069+4319399 Star 159.9″ —

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/kepler-138-e · Registry entry updated 2026-08-14.