Asteroids and TNOs with companions: component size ratio vs. primary size

compiled by Wm. Robert Johnston
last updated 20 September 2014

Component size ratio (Ds/Dp) is secondary diameter divided by primary diameter. Symbol sizes indicate component separation (a/Rp) expressed in terms of the radius of the primary. Some values are estimated based on assumed albedoes, densities, etc.

Binary dynamical types are based on taxonomy described by Pravec and Harris (2007) and by Lindsay et al. (2014); more discussion is available here. In summary, type codes are:

Some comments (under construction):


© 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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