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.
This asteroid was discovered on 29 January 1935, by Belgian astronomer Eugene Delporte at the Royal Observatory of Belgium in Uccle. The Royal Observatory of Belgium (French: Observatoire Royal de Belgique, Dutch: Koninklijke Sterrenwacht van Belgie), has been situated in the Uccle municipality of Brussels (Belgium) since 1890. 
