Von KI (Opus 5.5) aus der englischen Karte übersetzt. Zahlen, Namen und Quellen sind unverändert.

Stern mit 4 bekannten Planeten

Kepler-138

In Ouranos öffnen

Kepler-138, ein M1 V-Stern, hat 4 bestätigte Planeten.

Gemessen

Entfernung: etwa 218 Lichtjahre
Spektraltyp des Sterns: M1 V
Bestätigte Planeten: 4

Entfernung von der Sonne

Über 218 Lichtjahre. Zum Durchqueren:

Licht218 Jahre
Geschwindigkeit von Voyager 13.88 Millionen Jahre
Fahrt mit 100 km/h2.35 Milliarden Jahre

Voyager 1 mit der Geschwindigkeit, mit der sie sich im Jahr bis 2026-10-25 nach außen bewegte (JPL Horizons). Fahrt: ohne Pause, ohne je nachzutanken.

Fakten

Kepler-138 e hat eine Gleichgewichtstemperatur zwischen −50 und +50 °C.

Wie er entdeckt wurde

Erster Planet, entdeckt 2014 durch Transit und Transitzeitvariationen (NASA Exoplanet Archive).

Seine Planeten

Kepler-138 d — 1.5 times Earth's width, about Earth-sized — probably rocky; its year lasts 23 days; about 72 °C, between freezing and boiling; found in 2014 by transit.
Kepler-138 c — 1.5 times Earth's width, about Earth-sized — probably rocky; its year lasts 14 days; about 140 °C, hotter than boiling water; found in 2014 by transit.
Kepler-138 b — 0.6 times Earth's width, smaller than the Earth; its year lasts 10 days; about 180 °C, hotter than boiling water; found in 2014 by transit.
Kepler-138 e — 0.8 times Earth's width (estimated from its mass, not measured), about Earth-sized — probably rocky; its year lasts 38 days; about 19 °C, between freezing and boiling; found in 2022 by transit timing variations.

The NASA Exoplanet Archive's page

Woher das stammt

NASA Exoplanet Archive, Planetary Systems Composite Parameters (fetched 2026-11-02). Composite values: where a planet's size or mass was not measured, the archive estimates it from the other.
This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.

Jeder Katalog, den Ouranos verwendet, wird auf der Seite mit den Quellenangaben genannt.

Seine Planeten

Kepler-138 d — 1.5 times Earth's width, about Earth-sized — probably rocky; its year lasts 23 days; about 72 °C, between freezing and boiling; found in 2014 by transit.

Kepler-138 c — 1.5 times Earth's width, about Earth-sized — probably rocky; its year lasts 14 days; about 140 °C, hotter than boiling water; found in 2014 by transit.

Kepler-138 b — 0.6 times Earth's width, smaller than the Earth; its year lasts 10 days; about 180 °C, hotter than boiling water; found in 2014 by transit.

Kepler-138 e — 0.8 times Earth's width (estimated from its mass, not measured), about Earth-sized — probably rocky; its year lasts 38 days; about 19 °C, between freezing and boiling; found in 2022 by transit timing variations.

Woher das stammt

NASA Exoplanet Archive, Planetary Systems Composite Parameters (fetched 2026-11-02). Composite values: where a planet's size or mass was not measured, the archive estimates it from the other.

This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.