1293 Sonja was discovered by Eugne Joseph Delporte, a Belgian astronomer born in Genappe, at Uccle Observatory, on 26 September 1933.
E. Delporte Eugene Joseph Delporte (10 January 1882  19 October 1955) was a Belgian astronomer born in Genappe. It was discovered on 26 September 1933, by Belgian astronomer Eugene Delporte at Uccle Observatory in Belgium. 
