Asteroid 2021 HN flew past Earth at 0.66 LD — 18th within 1 LD in April
A newly-discovered asteroid designated 2021 HN flew past Earth at a distance of 0.66 LD / 0.00170 AU (254 316 km / 158 024 miles) at 07:53 UTC on April 19, 2021. This is the 51st known asteroid to flyby Earth since the start of the year and the 18th so far this…