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Approx Positions of Asteroids, Eighteen Fifty-One to Two Thousand Fifty: Donath, Emma B.: 9780866900379: Amazon.com: Books
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Early Investigations of Ceres and the Discovery of Pallas: Historical Studies in Asteroid Research 2, Cunningham, Clifford - Amazon.com
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Studies of Pallas in the Early Nineteenth Century: Historical Studies in Asteroid Research: Cunningham, Clifford J.: 9783319328461: Amazon.com: Books
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Like a Golf Ball: Scientists Say Solar System's Biggest Asteroid is Strewn With Craters - Sputnik International
![Ben Gross on Twitter: "#OTD 1804, German astronomer Karl Harding discovered Juno, the third asteroid ever observed. Like Ceres & Pallas, Juno was initially considered a planet, as seen in this American Ben Gross on Twitter: "#OTD 1804, German astronomer Karl Harding discovered Juno, the third asteroid ever observed. Like Ceres & Pallas, Juno was initially considered a planet, as seen in this American](https://pbs.twimg.com/media/EDaFP3SXsAE_O7F.jpg:large)