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 2007 durch Radialgeschwindigkeit und Transit (NASA Exoplanet Archive).
Seine Planeten
HAT-P-2 c — 12 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 23 Earth years; found in 2023 by radial velocity.
HAT-P-2 b — 11 times Earth's width, a giant, Jupiter-sized or more; its year lasts 6 days; about 1,300 °C, hot enough to melt rock; found in 2007 by transit.
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.