فوياجر 1 بالسرعة التي ابتعد بها خلال السنة حتى 2026-10-25 (JPL Horizons). القيادة: دون توقف، ودون التزود بالوقود أبدًا.
كيف اكتُشف
اكتُشف أول كوكب عام 2012 بطريقتي العبور والسرعة الشعاعية (أرشيف ناسا للكواكب الخارجية).
كواكبه
HAT-P-17 b — 12 times Earth's width, a giant, Jupiter-sized or more; its year lasts 10 days; about 530 °C, hotter than boiling water; found in 2012 by transit.
HAT-P-17 c — 13 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 15 Earth years; about −170 °C, below freezing; found in 2012 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.