7P/Pons–Winnecke is a periodic Jupiter-family comet with a six-year orbit. Early calculations for the 1921 apparition suggested that the orbit of the comet might collide with Earth in June, but observations on 10 April ruled out an impact. It made... Wikipedia
Discoverers: Jean-Louis Pons and Friedrich August Theodor Winnecke
Orbital period: 2,309 days
Orbits: Sun
Discovered: March 9, 1858
Earth MOID: 0.24 AU (36 million km)