These series of radar images of asteroid 1999 RQ36 were obtained by NASA's Deep Space Network antenna in Goldstone, Calif.
NASA/JPL-Caltech
1999-09-23
<a rel="nofollow" class="external free" href="http://photojournal.jpl.nasa.gov/catalog/PIA15776">http://photojournal.jpl.nasa.gov/catalog/PIA15776</a>