Near Earth Asteroids

Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.

On July 12, 2016 there were 1710 potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid	Date(UT)	Miss Distance	Size
2016 NJ22	Jul 7	0.7 LD	10 m
2016 MO	Jul 7	6.6 LD	45 m
2016 NN15	Jul 8	4.3 LD	20 m
2016 ND1	Jul 10	10.4 LD	42 m
2016 NK22	Jul 11	0.7 LD	7 m
2016 NC1	Jul 13	7.3 LD	34 m
2016 NS	Jul 20	8.7 LD	35 m
2002 KL6	Jul 22	26.6 LD	1.4 km
2011 BX18	Jul 25	52.7 LD	1.1 km
2016 NW15	Jul 26	13.7 LD	35 m
2016 NX22	Aug 2	13 LD	88 m
2005 OH3	Aug 3	5.8 LD	28 m
2000 DP107	Aug 12	66.5 LD	1.0 km
2004 BO41	Sep 7	38.9 LD	1.1 km
2015 KE	Sep 10	14.9 LD	23 m

Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

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