What do you think of this potentially hazardous asteroid discovered this month, the 2011 UL21 that based on 77 observations, the predicteddangerous approaches. 4 on a scale of 1 of Turin
thanks in advance
1. An observation arc of only 13 days is early for making reliable long-term close approach predictions. It has an Impact Probability (cumulative) of only 1 in 833,000. Being 2.5km in diameter, they can quickly refine the known trajectory/orbit.
2. It still has a negative Palermo Scale. A palermo value of zero indicates that a potential impact is no more threatening than the background hazard.
Hey Kevin are you excited for yu55 next week I’m thinking it will be too cloudy to observe in the uk.
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