, (90) , . (79360) 1997 CS29 . 1998 WW31. - [1]. 2006 XXVI , . [2].
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, , . , , . - -, , 0,00025 (1/4000) . 0,01230 (≈ 1/81), 0,117 (≈ 1/9).
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19 570 ( ~ 384 400 ). 2390 , 1212±16 [4]. , . , , - , , .
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- Welcome to the double planet. ESA (5 2003). 12 2009.
- The IAU draft definition of "planet" and "plutons". International Astronomical Union (16 2006). 17 2008.
- Robert Roy Britt Earth's moon could become a planet. CNN Science & Space (18 2006). 25 2009.
- :
- Draft Resolution 5 for GA-XXVI: Definition of a Planet.
- Planet Definition Questions & Answers Sheet.
- Pluto and the Developing Landscape of Our Solar System.
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- «Clyde Tombaugh (1906-97) Astronomer who discovered the Solar Systems ninth planet», Nature 385 (1997) 778 (Pluto and Charon are «the only known example of a true double planet».)
- «Its not easy to make the Moon», Nature 389 (1997) 327 (comparing double planet theory of Moon formation and Pluto-Charon as double planet)