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(7888) 1993 UC
(7888) 1993 UC is a near-Earth minor planet in the Apollo group.[1] It was discovered by Robert H. McNaught at the Siding Spring Observatory in Coonabarabran, New South Wales, Australia, on 20 October 1993.[1] The asteroid has an observation arc of 34 years and has a well determined orbit.[1] Its estimated size is 2.3 to 5.2 km.[4] On 20 March 2013, the asteroid passed 49 lunar distances or 0.12598 AU (18,846,000 km; 11,711,000 mi) from Earth at a relative velocity of 21.8 km/s (49,000 mph).[1] The approach posed no threat to Earth. (7888) 1993 UC is not classified as a potentially hazardous asteroid (PHA) because its Earth MOID (Minimum Orbit Intersection Distance) is only 0.084 AU,[1] and only objects with an Earth MOID less than 0.05 AU are considered PHAs.[5] It was discovered to be a binary asteroid by Arecibo Observatory in March 2013.[6] References
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