January 31

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 January 30, 2017 there were potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid	Date(UT)	Miss Distance	Size
2017 BM30	Jan 25	4.7 LD	22 m
2000 WN107	Jan 26	62.3 LD	2.8 km
2017 BA7	Jan 26	1.1 LD	12 m
2017 AK3	Jan 26	11.3 LD	52 m
2016 YP4	Jan 26	12.6 LD	18 m
2017 BH30	Jan 30	0.1 LD	8 m
2017 BJ30	Jan 31	1 LD	21 m
2017 BY5	Jan 31	10.4 LD	29 m
2017 BT6	Jan 31	13.1 LD	47 m
2017 BB7	Jan 31	3 LD	10 m
2017 BB6	Feb 2	5.6 LD	16 m
2005 VL1	Feb 3	11.4 LD	18 m
2017 BG30	Feb 5	2.5 LD	6 m
2013 FK	Feb 5	7.1 LD	101 m
2017 BK30	Feb 5	8.6 LD	14 m
2017 BQ6	Feb 7	6.6 LD	240 m
2017 BM3	Feb 8	12.6 LD	109 m
2014 DV110	Feb 10	9.8 LD	45 m
2015 QR3	Feb 12	13.1 LD	31 m
2017 BW	Feb 17	4.6 LD	88 m
2013 WT67	Feb 17	44.2 LD	1.1 km
1992 FE	Feb 24	13.1 LD	275 m
1998 QK56	Feb 24	53 LD	1.2 km
2012 DR32	Mar 2	2.7 LD	52 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.