Encke's Comet
Faint comet having the shortest orbital period (about 3.3 years) of any known; it was also only the second comet (after Halley's) to have its period established. The comet was first observed in 1786 by Pierre Méchain. Johann Franz Encke in 1819 calculated that sightings of apparently different comets in 1786, 1795, 1805, and 1818 were in fact appearances of the same comet, whose short orbital period he was
posted by SuddenCat @ 7:46 AM
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