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出典:Wiktionary
出典:『Wiktionary』 (2024/11/08 20:30 UTC 版)
binary asteroid (plural binary asteroids)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/23 11:17 UTC 版)
A binary asteroid is a system of two asteroids orbiting their common center of mass, in analogy with binary stars. 243 Ida was the first binary asteroid to be identified when the Galileo spacecraft did a flyby in 1993. Since then numerous binary asteroids have been detected.
binary asteroid