Career
From 1864 to 1889 he was the director of the Astronomical Observatory of Capodimonte in Naples. His name was occasionally written Annibal de Gasparis, including by himself. The asteroid 4279 De Gasparis as well as the lunar crater de Gasparis (30 km in diameter) and the Rimae de Gasparis (a 93 km long fracture near the crater) are named in his honour.