Claim: Characterized as a dark C-type asteroid, 4003 Schumann was discovered by F. Börngen at the Karl Schwarzschild Observatory on 8 March 1964.
Evidence: Schumann has been characterized as a dark C-type asteroid. 4003 Schumann, provisional designation 1964 ED, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 35 kilometers in diameter. The asteroid was discovered on 8 March 1964, by German astronomer Freimut Börngen at the Karl Schwarzschild Observatory in Tautenburg, Eastern Germany. 
Schumann has been characterized as a dark C-type asteroid. F. Börngen Karl Schwarzschild Obs. 8 March 1964