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  • Kuiper Belt and Oort Cloud - NASA Solar System Exploration
    temporarily designated 2003UB313 and later named Eris, orbits the Sun about every 560 years, its distance varying from about 38 to 98 AU (For comparison, Pluto travels from 29 to 49 AU in its solar orbit ) Eris’s size is difficult to measure, owing to its extreme distance, but a 2011 estimate from a ground-based
  • Planet Compare - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system Eris; HYPOTHETICAL Planet X; Moons About Moons; BY DESTINATION Earth (1) Mars (2) Jupiter (95) Saturn (83) Uranus (27) Neptune (14) Pluto (5)
  • In Depth | Kuiper Belt – NASA Solar System Exploration
    Today it's known as the "King of the Kuiper Belt" – and it's the largest object in the region, even though another object similar in size, called Eris, has a slightly higher mass Pluto’s orbit is said to be in resonance with the orbit of Neptune, meaning Pluto's orbit is in a stable, repeating pattern with Neptune's
  • Directory | Solar System Ambassadors - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • Europa By the Numbers – NASA Solar System Exploration
    The average speed of an object over an entire orbit km h mph m s 107,218 km h 66,622 mph 2 9783 x 10 4 m s ORBIT ECCENTRICITY The amount an object's orbit deviates from a perfect circle 0 01671123 EQUATORIAL INCLINATION The tilt of an objects equator in relation to the plane of the ecliptic
  • Directory | Solar System Ambassadors - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system (ascent, on-orbit, reentry) He is a retired Air Force Colonel with a career in space systems operations that spans ground-based and on-orbit space operations Eris; HYPOTHETICAL Planet
  • Scientists Finally Know What Time It Is on Saturn
    Scientists Finally Know What Time It Is on Saturn A view from NASA's Cassini spacecraft shows Saturn's northern hemisphere in 2016 as that part of the planet nears its northern hemisphere summer solstice A year on Saturn is 29 Earth years; days only last 10:33:38, according to a new analysis of Cassini data
  • Directory | Solar System Ambassadors - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system Eris; HYPOTHETICAL Planet X; Moons About Moons; BY DESTINATION Earth (1) Mars (2) Jupiter (95) Saturn (83) Uranus (27) Neptune (14) Pluto (5)
  • In Depth | Oberon – NASA Solar System Exploration
    Discovery Oberon was discovered in Jan 11, 1787 by William Herschel Overview Oberon is the second largest moon of Uranus Discovered in 1787, little was known about this moon until Voyager 2 passed it during its flyby of Uranus in January 1986
  • Eris - NASA Solar System Exploration
    • March 17 - MESSENGER orbit insertion at Mercury • May 5 - Selection of 3 Discovery-class missions for study • May - Selection of the next New Frontier mission for flight, OSIRIS-Rex





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