Human objects Chang'e 5-T1 Booster Impact When to observe it On the far side: it never faces the Earth. Only spacecraft have seen it. Nearby Michelson 128 km Hertzsprung 151 km Grigg 260 km Catena Lucretius (RNII) 282 km Kuo Shou Ching 289 km Kolhörster 358 km Weyl 358 km Fersman 385 km