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Bruce Murray Space Image Library

2010 JL33 seen by Goldstone radio telescope

2010 JL33 seen by Goldstone radio telescope
2010 JL33 seen by Goldstone radio telescope The animation consists of 34 radar images of near-Earth asteroid 2010 JL33 taken by the Goldstone radio telescope on December 11 and 12, 2011. NASA / JPL / Emily Lakdawalla

According to the JPL website, these radar observations reveal that "2010 JL33 is an irregular, elongated object roughly 1.8 kilometers wide that rotates once every nine hours."