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

Stern mit 3 bekannten Planeten

GJ 581

In Ouranos öffnen

GJ 581, ein M3.0-V-Stern, hat 3 bestätigte Planeten.

Gemessen

Entfernung: etwa 20.5 Lichtjahre
Spektraltyp des Sterns: M3.0 V
Bestätigte Planeten: 3

Entfernung von der Sonne

Über 20.5 Lichtjahre. Zum Durchqueren:

Licht20.5 Jahre
Geschwindigkeit von Voyager 1364,000 Jahre
Fahrt mit 100 km/h221 Millionen 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.

Wie er entdeckt wurde

Erster Planet, entdeckt 2005 durch Radialgeschwindigkeit (NASA Exoplanet Archive).

Seine Planeten

GJ 581 b — 4.8 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 5 days; about 190 °C, hotter than boiling water; found in 2005 by radial velocity.
GJ 581 c — 2.5 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 13 days; about 73 °C, between freezing and boiling; found in 2007 by radial velocity.
GJ 581 e — 1.4 times Earth's width (estimated from its mass, not measured), about Earth-sized — probably rocky; its year lasts 3 days; about 280 °C, hotter than boiling water; found in 2009 by radial velocity.

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

GJ 581 b — 4.8 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 5 days; about 190 °C, hotter than boiling water; found in 2005 by radial velocity.

GJ 581 c — 2.5 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 13 days; about 73 °C, between freezing and boiling; found in 2007 by radial velocity.

GJ 581 e — 1.4 times Earth's width (estimated from its mass, not measured), about Earth-sized — probably rocky; its year lasts 3 days; about 280 °C, hotter than boiling water; found in 2009 by radial velocity.

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.