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Piazzi, Giuseppe

   Also found in: Wikipedia, Hutchinson 0.05 sec.
Piazzi, Giuseppe (jzĕp`pā pyät`tsē), 1746–1826, Italian astronomer, a Theatine priest from 1769. He became (1781) professor of mathematics at the Univ. of Palermo, supervised construction of a government observatory (opened 1791) at Palermo, and was its first director. He also established a government observatory at Naples (1817). He was the first to discover (Jan. 1, 1801) an asteroid asteroid, planetoid, or minor planet, small body orbiting the sun. More than 10,000 asteroids have orbits sufficiently well known to have been cataloged and named; thousands more exist.
..... Click the link for more information.  and named it Ceres Ceres (sîr`ēz), in astronomy, a dwarf planet, the first asteroid to be discovered. It was found on Jan. 1, 1801, by G. Piazzi .
..... Click the link for more information. . In 1803 he published a catalog of the fixed stars, and in 1814 he enlarged it to include 7,646 stars. He wrote Lezioni elementari di astronomia (1817).


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