(157640) Baumeler = 2005 XS80
Martin Baumeler (b. 1936) is a skilled artisan who devised techniques
for installing the telescope and coelostat at the Observatoire R. A. Naef,
where this minor planet was discovered.
A complete set of naming citations of the numbered minor planets is available in the Dictionary of Minor Planet Names, edited by Lutz Schmadel.