Thüringer Landessternwarte Tautenburg
11573 Helmholtz, provisional designation , is a Zhongguo asteroid from the outermost region of the asteroid belt, approximately in diameter. It was discovered on 20 September 1993, by German astronomers Freimut Börngen and Lutz Schmadel at the Karl Schwarzschild Observatory in Tautenburg, Germany. It is one of few asteroids located in the 2:1 resonance with Jupiter. The asteroid was named for German physicist Hermann von Helmholtz.