Hale-Bopp instead of Halle, got mixed up with Halley's comet.
Comet Hale–Bopp was perhaps the most widely observed
comet of the 20th century and one of the brightest seen for many decades. It was visible to the naked eye for a record 18 months, twice as long as the previous record holder, the
Great Comet of 1811.
Comet Hale?Bopp - Wikipedia, the free encyclopedia