Binary YORP and Evolution of Binary Asteroids — mentioned by dandelany

Thu, 03 Jan 2019 00:22:13 GMT

Tidal forces are one way - either between the two binary components, or from a close encounter with a third, larger body. Another is the "YORP Effect". Sunlight falling on an asteroid produces a slight thermal radiation pressure (push). If, due to asymmetries in asteroid shape/albedo, the net radiation pressure force is not aligned with the asteroid's center of mass, it will produce a torquing force which will cause the asteroid to spin faster (or slower) over time. Applying the idea of YORP Effect to binary asteroids yields the "BYORP [Binary YORP] Effect", by which the orbital dynamics of…

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Binary YORP and Evolution of Binary Asteroids — mentioned by dandelany