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 13, 2018 there were 1923 potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid	Date(UT)	Miss Distance	Velocity (km/s)	Diameter (m)
2018 RQ	2018-Sep-07	12.5 LD	13.3	40
2018 RJ3	2018-Sep-07	0.4 LD	8.4	10
2018 RF3	2018-Sep-07	2 LD	9.9	15
2018 RF	2018-Sep-08	11.8 LD	13.3	44
2018 RD1	2018-Sep-08	13.5 LD	10.1	52
2018 RW	2018-Sep-08	0.4 LD	6.3	3
2018 RY3	2018-Sep-08	4.4 LD	19.7	31
2018 RC	2018-Sep-09	0.6 LD	5.3	38
2018 RD4	2018-Sep-09	2.3 LD	6	8
2018 RE1	2018-Sep-10	11.1 LD	26	44
2018 RF2	2018-Sep-10	4 LD	10.9	10
2018 RA1	2018-Sep-10	2.4 LD	10.1	19
2018 QU1	2018-Sep-11	10.9 LD	12.5	101
2018 RB1	2018-Sep-11	2.5 LD	8.1	10
2018 RR4	2018-Sep-12	3.2 LD	8.9	14
2018 RE3	2018-Sep-13	1.8 LD	10.3	13
2018 RC4	2018-Sep-14	10.5 LD	8.1	26
2018 RQ2	2018-Sep-15	9.8 LD	14.4	94
2018 RC1	2018-Sep-15	16.7 LD	2.2	20
2018 RA2	2018-Sep-16	8 LD	9.3	27
2018 RQ4	2018-Sep-17	11.9 LD	7.7	15
2018 RM4	2018-Sep-18	11 LD	11.2	30
2018 RB4	2018-Sep-19	17.8 LD	3.6	14
2017 SL16	2018-Sep-20	8.5 LD	6.4	25
2018 RQ1	2018-Sep-24	4.1 LD	3.1	55
2018 RX3	2018-Sep-26	20 LD	14	72
2018 EB	2018-Oct-07	15.5 LD	15.1	155
2014 US7	2018-Oct-17	3.2 LD	8.7	19
2013 UG1	2018-Oct-18	10.4 LD	13.4	123
2016 GC221	2018-Oct-18	8.7 LD	14.4	39
475534	2018-Oct-29	7.5 LD	18.1	204
2002 VE68	2018-Nov-04	14.7 LD	8.6	282
2010 VQ	2018-Nov-07	15.6 LD	3.8	10

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.

Near Earth Asteroids

http://www.spaceweather.com/