(10302) 1989 ML is an unnamed near-Earth asteroid located in the inner Solar System. It is relatively small, estimated to be around 300 metres (980 ft) in diameter. An Amor asteroid, it orbits between Earth and Mars. It is an X-type asteroid, so its precise surface composition is yet unknown, though telescopic observations indicate it may be relatively enriched in iron. It was discovered by Eleanor F. Helin and Jeff T. Alu at Palomar Observatory on 29 June 1989. 1989 ML was the former backup target for Japan's Hayabusa mission, but launch delays meant that the rendezvous had to be cancelled.