Asteroid 2017 SM2 flew past Earth at 0.81 LD on September 20

Asteroid 2017 SM2 flew past Earth at 0.81 LD on September 20

A newly discovered asteroid designated 2017 SM2 flew past Earth at 0.81 LD (~311 040 km / 193 271 miles) on September 20, 2017. This is the 30th known asteroid to flyby Earth within 1 LD since the start of the year and the second within the past 7 days, according to…