He discovered two comets, namely the periodic comets 30P/Reinmuth and 44P/Reinmuth.
Odkril je tudi Jupitrove Trojance: 911 Agamemnon, 1143 Odisej, 1172 Enej, 1173 Anhis, 1208 Troilos, 1404 Ajaks, 1437 Diomed, 1749 Telamon.