Kleopatra, Cleoselene, and Alexhelios

Asteroid (216) Kleopatra has been interesting to astronomers for a long time because its brightness is highly variable, but it seems to get more interesting every time somebody looks at it with a new instrument. In 2000 it was found to be “dog-bone” shaped; in 2008 it was discovered to have two moons. This week a paper was published in Icarus by Pascal Descamps, Franck Marchis, and 17 coauthors, who used measurements of the orbits of those ….

URL: http://www.planetary.org/blog/article/00002926/

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