| 428 Monachia | November 18, 1897 | MPC |

Walter Augustin Villiger (1872–1938;[2] his first name is sometimes speltWalther) was aSwissastronomer and Carl Zeiss engineer who discovered anasteroid while working inMunich,Germany. He also participated in the observation ofcomets.
His astronomical period of activity extended from 1896 to 1907.[3] In 1924, less than a year after the firstplanetarium had been opened at theDeutsches Museum in Munich, Walther Villiger suggested a new, improvedZeiss planetarium projector. This new Zeiss, known as theMark II, was designed for much larger theatres than the previous model —up to 23 metres[1].
Asteroid1310 Villigera is named after him.[4]