122P/de Vico

122P/de Vico (provisional designation: 1846 D1) is a periodic comet with an orbital period of 74 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years). It was discovered by Francesco de Vico in Rome on February 20, 1846.
On 3 December 2153 the comet will pass about from Uranus.
Daniel Kirkwood in 1884 noticed that the comet shares elements with comet 12P/Pons-Brooks. He suggested that 122P had calved off Pons-Brooks some centuries prior. Later he identified the two comets' capture into their elliptical orbits (or their parent body's capture) with their shared aphelion close to Neptune 991 CE.