Asteroid 2017 TF5 flew past Earth at 0.73 LD, 4 days before discovery
A newly discovered asteroid designated 2017 TF5 flew past Earth at 0.73 LD (~280 320 km / 174 182 miles) at 07:40 UTC on October 10, 2017, 4 days before it was discovered. This is the 38th known asteroid to flyby Earth within 1 lunar distance since the start of the…