Potentially Hazardous 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 November 3, 2015 there were 1632 potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid	Date(UT)	Miss Distance	Size
2015 UH	Oct 29	9.4 LD	36 m
2015 TB145	Oct 31	1.3 LD	450 m
2015 TD179	Nov 4	10.5 LD	52 m
2005 UL5	Nov 20	5.9 LD	390 m
2003 EB50	Nov 29	48.8 LD	2.2 km
2007 BG29	Dec 1	54.1 LD	1.1 km
1998 WT24	Dec 11	10.9 LD	1.1 km
2011 YD29	Dec 24	9.7 LD	24 m
2003 SD220	Dec 24	28.4 LD	1.8 km
2008 CM	Dec 29	22.8 LD	1.5 km
2004 MQ1	Jan 2	55.4 LD	1.1 km
1999 JV6	Jan 6	12.6 LD	410 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://www.spaceweather.com/