The closest comet that has ever approached the Earth is Lexel's comet.
In 1770, it passed at a distance of 2 million km from the surface of our planet.
The comet was discovered by Charles Messier, however, it was named after the Russian astronomer Andrei Ivanovich Veksel, who accurately determined its orbit.
After that, the comet was no longer seen, it is considered lost.
Calendar: 01.22.2016