Helmut Lenhof (b. 1924) is a retired professor of physics. He was one of the founders of the Carinthian Astronomical Association in Klagenfurt, Austria, and dedicated much of his time to astronomy. He still contributes a monthly column for their journal. Name proposed by the first discoverer.
Discovered on 10-10-1990 in Tautenburg by Schmadel, L. D., Borngen, F.