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 15, 2018 there were 1923 potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid	Date(UT)	Miss Distance	Velocity (km/s)	Diameter (m)
2018 RC	2018-Sep-09	0.6 LD	5.3	38
2018 RR5	2018-Sep-09	7.4 LD	5.2	21
2018 RD4	2018-Sep-09	2.3 LD	6	8
2018 RO5	2018-Sep-09	5.3 LD	7.1	30
2018 RE1	2018-Sep-10	11.1 LD	26	44
2018 RQ5	2018-Sep-10	15.1 LD	10.4	42
2018 RF2	2018-Sep-10	4 LD	10.9	10
2018 RH5	2018-Sep-10	13.4 LD	6.8	17
2018 RJ6	2018-Sep-10	13.3 LD	11.2	19
2018 RA1	2018-Sep-10	2.4 LD	10.1	19
2015 SW6	2018-Sep-11	9.2 LD	10.5	43
2018 QU1	2018-Sep-11	10.9 LD	12.5	104
2018 RP5	2018-Sep-11	4.3 LD	13.7	21
2018 RB1	2018-Sep-11	2.5 LD	8.1	10
2018 RD5	2018-Sep-12	4.4 LD	6.5	24
2018 RT5	2018-Sep-12	1.6 LD	9.3	24
2018 RR4	2018-Sep-12	3.2 LD	8.9	14
2018 RY5	2018-Sep-12	0.5 LD	23.7	19
2018 RZ5	2018-Sep-12	0.1 LD	20.2	4
2018 RA6	2018-Sep-12	4.7 LD	13	29
2018 RE3	2018-Sep-13	1.8 LD	10.3	13
2018 RF6	2018-Sep-14	13.2 LD	12.4	37
2018 RC4	2018-Sep-14	10.5 LD	8.1	25
2018 RE5	2018-Sep-15	1.5 LD	15.3	12
2018 RQ2	2018-Sep-15	9.8 LD	14.4	93
2018 RC1	2018-Sep-15	16.7 LD	2.2	20
2018 RB6	2018-Sep-16	1.5 LD	13.6	25
2018 RG5	2018-Sep-16	4.5 LD	8.3	14
2018 RA2	2018-Sep-16	8 LD	9.3	28
2018 RK6	2018-Sep-17	2.4 LD	6.4	8
2018 RQ4	2018-Sep-17	11.9 LD	7.8	15
2018 RM4	2018-Sep-18	11 LD	11.2	29
2018 RB4	2018-Sep-19	17.8 LD	3.6	14
2017 SL16	2018-Sep-20	8.5 LD	6.4	25
2018 RH6	2018-Sep-22	8.6 LD	6	12
2018 RQ1	2018-Sep-24	4.1 LD	3.1	54
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/