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This distant realm is populated with thousands of miniature icy worlds which formed early in the history of the solar system These icy rocky bodies are called Kuiper Belt objects or transneptunian objects Plutos 248yearlong elliptical orbit can take. Walter S. Kiefer . Lunar and Planetary Institute. Mars through Time Workshop, July 2015. Vesta. Eucrites. : Asteroid Basalts. Juvinas. Diogenites: An asteroid mantle. Johnstown Diogenite. A thin-section view. Arleen Gallegos . How did Pluto get its name ?. Pluto got the name after the Roman God. , Hades. God . of the Underworld and the Darkness. Pluto is kind of dark . depending on . the backside that isn't facing the sun.. Pluto. Basic characteristics. Pluto’s moons. The Kuiper Belt. Basic . characteristics. Resonant . Kuiper Belt objects. Classical. . Kuiper Belt objects. The Oort Cloud. Basic characteristics. Pluto Data: Numbers. The . Pluto. Files. By Neil Degrasse Tyson. February 18, 1930. Pluto was discovered by Clyde W. Tombaugh, an amateur astronomer from Illinois at Arizona’s Lowell Observatory.. He considered naming the planet Percival, after Percival Lowell.. To Be A Planet, Or Not To Be?. Physical Characteristics . 5 - Recognized Dwarf Planets. Ceres, Pluto, . Haumea. , . Makemake. , Eris. Classification Criteria. Directly orbits the Sun (not a satellite). Mission. Status Report for SBAG. Will Grundy. Lowell Observatory. New Horizons: To . Pluto and Beyond. Pluto-Charon. July 2015. KBOs. 2016-2020. Jupiter System. Feb-March 2007. The Initial Reconnaissance of The Solar System. Pluto’s Discover. Pluto was discovered after . the other 8 . planets and was originally considered a planet itself until 2006. In the early 1900s, Planet "X" was the temporary name given to the then-unknown planet beyond Neptune that disturbed the orbits of Uranus and Neptune. Percival Lowell calculated the rough location of Planet "X's" orbit, but died in 1916 before it was found. This planet was eventually found by the American astronomer Clyde W. Tombaugh in 1930 and named Pluto. . Size, Color, Surface Features, Rotation, Revolution, and Density. 2,302 km in diameter . 20% of Earth’s size. Darker color with white splotches. i. ce caps, sediment, nitrogen, methane, carbon monoxide . By AJ, Aidan, Cheryl, and Emma. The Dwarf Planets. A dwarf planet is a smaller planet that shares an orbit around the sun such as an asteroid comets.. Scientists believe there may be as many as a few 100 other dwarf planets in the . . New . Horizons. James Zimbelman. National Air and Space Museum. Smithsonian Institution. Pluto. Charon. Pluto. Diam. . = 0.2 E. Pluto. Charon. HST (2/21/94). “. Double-planet. ”. (1172 km). 0.33 M. New discoveries and follow up observations. University of Hertfordshire. Joana Gomes. Outline. New binaries. T dwarf search and summer student. Follow up observations. White dwarf observations. L dwarfs. Prior to 2006. When Pluto was discovered in 1930, it was automatically called a planet. It was thought to be larger than Mercury.. However, when Pluto’s moon . Charon. was discovered, it was used to determine Pluto’s mass, which ended up being 1/20. Our solar system is ancient. . Early . astronomers believed that Earth was the center of the universe and all other heavenly bodies orbited around Earth.. Our Solar System. We now know that our sun is the center of our solar . stellar core remnant. composed mostly of . electron-degenerate matter. . A white dwarf is very . dense. : its mass is comparable to the . Sun. 's, while its volume is comparable to the . Earth. 's. A white dwarf's faint .