Near Earth Asteroids

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 September 28, 2016 there were potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid	Date(UT)	Miss Distance	Size
2016 SA2	Sep 25	0.8 LD	10 m
2016 SC	Sep 25	3.1 LD	13 m
2016 SX1	Sep 26	2.2 LD	9 m
2016 SG	Sep 27	2.3 LD	20 m
2016 SW1	Sep 28	1.3 LD	9 m
2016 SL2	Sep 29	2.4 LD	35 m
2016 SZ1	Sep 29	6.1 LD	21 m
2009 UG	Sep 30	7.3 LD	101 m
2016 SR2	Oct 7	3.8 LD	22 m
2100 Ra-Shalom	Oct 9	58.3 LD	1.1 km
2014 UR	Oct 18	12 LD	21 m
2005 SE71	Oct 24	72.2 LD	1.0 km
2003 TL4	Oct 27	10.1 LD	565 m
2003 YT1	Oct 31	13.5 LD	850 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.


http://spaceweather.com/