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|+ Minor planets discovered: 8 After visiting the observatory in Kenosha with his violin teacher at age 12, he started grinding mirrors. as well as eight asteroids, including notably the Apollo asteroid (29075) 1950 DA, which may have a non-negligible probability of impacting the Earth in the year 2880. He also discovered two other Apollo asteroids: 1685 Toro and 1863 Antinous. Based on the Shane–Wirtanen survey, the Shane Wirtanen Catalogue, a count of galaxies, was his major work published in 1954.
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