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
GJ 433 d hat eine Gleichgewichtstemperatur zwischen −50 und +50 °C.
Wie er entdeckt wurde
Erster Planet, entdeckt 2013 durch Radialgeschwindigkeit (NASA Exoplanet Archive).
Seine Planeten
GJ 433 b — 2.3 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 7 days; about 200 °C, hotter than boiling water; found in 2013 by radial velocity.
GJ 433 c — 6.3 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts about 14 Earth years; about −220 °C, below freezing; found in 2014 by radial velocity.
GJ 433 d — 2.1 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 36 days; about 7 °C, between freezing and boiling; found in 2020 by radial velocity.
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.