(157541) Wachter = 2005 UN8
Manfred Wachter (1938-2000) was a German telescope maker. He founded his
company in 1963 in Stuttgart-Uhlbach and later moved to Bodelshausen. He was
well known for his folded refractors with apertures of 100 mm to 230 mm,
using lenses made by Dieter Lichtenknecker.
A complete set of naming citations of the numbered minor planets is available in the Dictionary of Minor Planet Names, edited by Lutz Schmadel.