Claim: 1711 Sandrine was discovered in 1935 by E. Delporte in an observatory in South Africa; it's orbital period if five point twenty three years.
Evidence: This asteroid was discovered on 29 January 1935, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. The Royal Observatory of Belgium (French: Observatoire Royal de Belgique, Dutch: Koninklijke Sterrenwacht van België), has been situated in the Uccle municipality of Brussels (Belgium) since 1890.