A small asteroid designated 2017 WW1 will flyby Earth at a distance of 0.37 LD / 0.00094 AU (~140 621 km / 87 378 miles) at 19:18 UTC on November 21, 2017. This is 50th known asteroid to flyby Earth within 1 lunar distance since the start of the year. 2017 WW1 was…… Read more »