Kepler-20d - Wikipedia
WEBKepler-20d is an exoplanet orbiting Kepler-20. It has a mass and radius similar to Neptune. Despite being the furthest planet from the star, it has an orbit similar to Mercury, meaning that it is a Hot Neptune. Along with the other four planets in the system, Kepler-20d was announced on December 20, 2011.
Kepler-20 d - Science@NASA
WEBKepler-20 d is a super Earth exoplanet that orbits a G-type star. Its mass is 13.4 Earths, it takes 77.6 days to complete one orbit of its star, and is 0.3474 AU from its star. Its discovery was announced in 2011.
Kepler-20 - Wikipedia
WEBKepler-20 is a star about 934 light-years (286 parsecs) from Earth in the constellation Lyra with a system of at least five, and possibly six, known planets. [5] The apparent magnitude of this star is 12.51, so it cannot be seen with the unaided eye. Viewing it requires a telescope with an aperture of 15 cm (6 in) or more. [6]
Kepler-20, An Unusual Planetary System - NASA Science
WEBDec 20, 2011 · This animation begins by showing the farthest planet from the star, Kepler-20d, then flies over to Kepler-20f and moves on successively to closer and closer planets. It then pans out to show all five planets in the miniature solar system.
NASA Discovers First Earth-Size Planets Beyond Our Solar System
WEBDec 20, 2011 · The planets, called Kepler-20e and Kepler-20f, are too close to their star to be in the so-called habitable zone where liquid water could exist on a planet's surface, but they are the smallest exoplanets ever confirmed around a star like our sun.
NASA discovers first Earth-sized planets beyond our solar system
WEBDec 21, 2011 · The planets, called Kepler-20e and Kepler-20f, are too close to their star to be in the habitable zone where liquid water could exist on a planet’s surface, but they are the smallest exoplanets...
First 'Mini-Earth' May Have Been Spotted | Science | AAAS
WEBDec 7, 2011 · Kepler-20d, the outermost planet in the system, was found to weigh in at less than 20.1 Earth masses. The three planets are between 1.9 and 3 times the size of Earth. So what about the other two?
First Earth-Sized Planets Found - Center for Astrophysics
WEBDec 20, 2011 · The three largest planets are designated Kepler-20b, 20c, and 20d. They have diameters of 15,000, 24,600, and 22,000 miles and orbit once every 3.7, 10.9, and 77.6 days, respectively. Kepler-20b has 8.7 times the mass of Earth; Kepler-20c has 16.1 times Earth's mass.
Kepler-20, An Unusual Planetary System - Exoplanet Exploration
WEBThis animation begins by showing the farthest planet from the star, Kepler-20d, then flies over to Kepler-20f and moves on successively to closer and closer planets. It then pans out to show all five planets in the miniature solar system.
Kepler-20f - Wikipedia
WEBKepler-20f (also known by its Kepler Object of Interest designation KOI-070.05) is an exoplanet orbiting the Sun-like star Kepler-20, the second outermost of five such planets discovered by NASA's Kepler spacecraft.
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