Giovanni Battista Hodierna
Giovanni Battista Hodierna, also spelled as Odierna was an Italian astronomer at the court of Giulio Tomasi, Duke of Palma. He compiled a catalogue of comets and other celestial objects containing some 40 entries, including at least 19 real and verifiable nebulous objects that might be confused with comets.Biography
Hodierna was born in Ragusa, Sicily and died in Palma di Montechiaro. While serving as a Roman Catholic priest in Ragusa, he also practised astronomy.
In 1654 he published a book entitled De systemate orbis cometici, deque admirandis coeli characteribus that contained a catalogue of celestial objects. The work anticipated Messier's catalogue, but had little impact. Messier seems not to have known of it.
