Craters Eratosthenes Origin of the name Greek astronomer, geographer (c. 276-196 B.C.). When to observe it … Nearby Sinus Aestuum 114 km Stadius 141 km Mons Wolff 151 km Wallace 190 km Huxley 262 km Mons Ampère 265 km Marco Polo 273 km Gay-Lussac 279 km