Claim: 5756 Wassenbergh is a Rafita asteroid discovered by C. J. van Houten, I. van Houten and G. T. Gehrels in the Palomar Observatory on September 24, 1960.
Evidence: 5756 Wassenbergh, provisional designation 6034 P-L, is a Rafita asteroid from the central regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. C. J. van Houten
I. van Houten-G.
T. Gehrels It was discovered on 24 September 1960, by Dutch astronomer couple Ingrid and Cornelis van Houten on photographic plates taken by Dutch–American astronomer Tom Gehrels at the Palomar Observatory in California, United States. 
Wassenbergh is a member of the Rafita family (518), a large family of stony asteroid, named after 1644 Rafita. C. J. van Houten
I. van Houten-G.
T. Gehrels Palomar Obs. 24 September 1960