Comet Swift-Tuttle

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(Dancing Lady) Comet Swift-Tuttle  two and a half times the size of the asteroid that wiped out the dinosaurs
Comet Swift-Tuttle is a giant. core mass 26 km in diameter, or two-and-a-half times the size of the asteroid that wiped out the dinosaurs, Comet Swift–Tuttle (formally designated 109P/Swift–Tuttle) is a periodic comet with a current (osculating) orbital period of 133 years. It was independently discovered.
other comets are much smaller, with nuclei only a few kilometers across. As a result of its size, Comet Swift-Tuttle produces a large number of meteoroids, many of which are hefty enough to produce fireballs.
Last perihelion December 11, 1992
Next perihelion July 12, 2126
Discovery date July 16, 1862

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