Input (grade 12): He was a prolific discoverer of asteroids, discovering 122 in all, from 136 Austria in 1874 to 1073 Gellivara in 1923.
Output (grade 12): Some of the notable asteroids he found include 153 Hilda, 216 Kleopatra, 243 Ida, 253 Mathilde, 324 Bamberga, and the Amor asteroid 719 Albert.