A newly-discovered asteroid designated 2020 SW is expected to flyby Earth at just 0.07 LD / 0.00019 AU (28 423 km / 17 661 miles) at 11:18 UTC (± 06:18) on September 24, 2020.
- This is the 66th known asteroid to flyby Earth within 1 lunar distance since the start of the year and the 7th so far this month.
- It is also the 4th closest asteroid flyby so far this year and 24th closest on record.
Asteroid 2020 SW was first observed at Mt. Lemmon Survey, Arizona on September 18, 6 days before its close approach.
The object belongs to the Apollo group of asteroids and has an estimated diameter between 4.3 and 9.7 m (14.1 - 31.8 feet).
The flyby is expected to take place at 11:18 UTC (± 06:18) at a speed (relative to the Earth) of 7.7 km/s.
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