Had a break in the Welsh cloud this evening and watched YU55 sail by.... either that or a Satelite.... I'd say YU55 quite a large object 9.55pm aprox heading WSW
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Back on topic, for what it's worth I calculated the orbit of YU55 using only my own observational data from the night of the close approach to see what its trajectory was through the earth-moon system. To avoid having to divulge my exact latitude and longitude online, I used the university of florida as my observing site for the calculations. It's not really all that close to me, but it's the right state and it's close enough for a rough orbital determination. In spite of this, and in spite of only having a few hours of data from one observer (me), the result agrees with the JPL prediction of the asteroid's trajectory. I'll post the full details and video comparison of predicted vs what I detected later tonight.

OK, if your going to use acronyms, you need to have a description beside that word so that people understand what the hell you are talking about.

Personally im not going to read a thousand returned comments to find out what information you are talking about, so please explain...