Hmm, seems my response got more attention than the original question! Isn't anyone else going to help darnun out?
Quote:
Originally Posted by AstralTraveller
There is a way to get a direct measurement of an asteroids size - and amateurs are leading the way.
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Gosh, yes, how could I forget! You don't need to convert me to the occultation cause, I'm already on the bandwagon (have been for years) and very slowly working my way towards joining in.
I also thought about photometric modelling while I was driving around at work today - where light curves of the asteroid are collected and put into a model. Plus there is radar for close passing asteroids, such as Toutatis.