小惑星1番 ケレス (1 Ceres)

Discovery　 One of the astronomers selected for the search was Giuseppe Piazzi at the Academy of Palermo, Sicily. Before receiving his invitation to join the group, Giuseppe Piazzi discovered Ceres on 1 January 1801.[31] He was searching for "the 87th [star] of the Catalogue of the Zodiacal stars of Mr la Caille", but found that "it was preceded by another".[24] Instead of a star, Piazzi had found a moving star-like object, which he first thought was a comet.[32] Piazzi observed Ceres a total of 24 times, the final time on 11 February 1801, when illness interrupted his observations. He announced his discovery on 24 January 1801 in letters to only two fellow astronomers, his compatriot Barnaba Oriani of Milan and Bode of Berlin.[33] He reported it as a comet but "since its movement is so slow and rather uniform, it has occurred to me several times that it might be something better than a comet".[24] In April, Piazzi sent his complete observations to Oriani, Bode, and Je'ro^me Lalande in Paris. The information was published in the September 1801 issue of the Monatliche Correspondenz.[32]

出典: http://en.wikipedia.org/wiki/Ceres_%28dwarf_planet%29#Discovery