"Goldstone High-Resolution Chirp Radar Imaging [of] 2010 AL30," JPL radar - 4 Oct. 11 Quote: "We report the first results of a new delay-Doppler radar chirp waveform system ... which reveal a somewhat elongated and optically dark object roughly 30 m in diameter, making 2010 AL30 one of the smallest NEAs spatially resolved with radar to date."