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A newly discovered asteroid designated 2018 BN6 flew past Earth at a distance of 0.94 LD / 0.00242 AU (~362 026 km / 224 953 miles) on January 24, 2018. Its closest approach to Earth took place 3 days before it was discovered.

This asteroid belongs to the Apollo group of asteroids and has an estimated diameter of 12 - 27 m (39 - 88 feet). It was first observed at Mt. Lemmon Survey on January 27, 2018.

2018 BN6 flew past Earth at a speed of 10.34 km/s (relative to the Earth) at 09:30 UTC on January 24. 

This is the 7th known asteroid to flyby Earth within 1 lunar distance since January 15 and the 8th since the start of the year. 54 known asteroids flew past us within 1 lunar distance in 2017.

As of January 25, our sky surveys have discovered 17 718 near-Earth objects (NEOs), 17 611 of them are asteroids. 151 NEOs were discovered since the start of the year, all of them are asteroids.

Less than 1 lunar distance asteroid flybys since the start of the year:

2018 BN6 - January 24 @ 09:30 UTC. Distance 0.94 LD | 0.00242 AU. Size: 12 - 27 m

2018 BX - January 19 @ 23:00 UTC. Distance: 0.73 LD | 0.00188 AU. Size: 4.3 - 9.5 m

2018 BC - January 19 @ 20:23 UTC. Distance: 0.73 LD | 0.00189 AU. Size: 3.5 - 7.9 m

2018 BF3 - January 19 @ 03:00 UTC. Distance: 0.63 LD | 0.00162 AU. Size: 18 - 40 m

2018 BD - January 18 @ 15:43 UTC. Distance: 0.10 LD | 0.00026 AU. Size: 2.5 - 5.5 m. Note: closest

2018 BR1 - January 16 @ 13:22 UTC. Distance: 0.34 LD | 0.00088 AU. Size: 3.3  - 7.5 m

2018 BW - January 15 @ 15:13 UTC. Distance: 0.43 LD | 0.00112 AU. Size: 6.5  - 14 m

2018 AH - January 2 @ 04:25 UTC. Distance: 0.77 LD | 0.00199 AU. Size:  85 - 190 m. Note: Largest

Reference:

Asteroid 2018 BF3 at Minor Planet Center; at CNEOS

 

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