Karl Schwarzschild Observatory
Asteroid 4098 Thraen, discovered by Dr. Börngen of the Karl Schwarzschild Observatory in Tautenberg in 1987 is named for the Dingelstädter minister and astronomer. At his parents' house in Holungen in 1956, a plaque was attached in his memory. The city of Dingelstaedt has a street named after Thraen.