List of asteroid close approaches to Earth in 2013

Radar imaging of 2013 ET during its approach in March 2013.^[1]

2005 WK4 in August 2013

Below is the list of asteroid close approaches to Earth in 2013.

Timeline of close approaches less than one lunar distance from Earth in 2013

A list of known Near-Earth asteroid close approaches less than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2013.^{[note 1]}

Date of closest approach	Object	Nominal geocentric distance (AU)[note 2]	Size (m) (approximate) [note 3]	(H)	Closer approach to Moon
2013-01-15	2013 BR27	0.00145 AU (217,000 km; 135,000 mi)	16	27.8[2]	Yes
2013-01-28	2013 CY	0.00230 AU (344,000 km; 214,000 mi)	13	28.3[3]
2013-02-05	2013 CY32	0.00070 AU (105,000 km; 65,000 mi)	14	28.1[4]
2013-02-11	2013 CL129	0.00185 AU (277,000 km; 172,000 mi)	12	28.4[5]	Yes
2013-02-15	367943 Duende	0.0002276 AU (34,050 km; 21,160 mi)	30	24.0[6]
2013-03-04	2013 EC	0.00245 AU (367,000 km; 228,000 mi)	16	27.8[7]
2013-03-09	2013 EC20	0.001003 AU (150,000 km; 93,200 mi)	9	29.0[8]
2013-04-18	2013 HT25	0.00036 AU (54,000 km; 33,000 mi)	10	28.8[9]
2013-06-08	2013 LR6	0.000742 AU (111,000 km; 69,000 mi)	16	27.8[10]
2013-08-04	2013 PJ10	0.00248 AU (371,000 km; 231,000 mi)	60	24.6[11]
2013-08-09	2013 PS13	0.00136 AU (203,000 km; 126,000 mi)	21	27.2[12]
2013-09-03	2013 RG	0.00151 AU (226,000 km; 140,000 mi)	7	29.4[13]
2013-09-04	2013 RO30	0.00194 AU (290,000 km; 180,000 mi)	12	28.4[14]
2013-09-05	2013 RF32	0.00112 AU (168,000 km; 104,000 mi)	10	28.7[15]
2013-09-18	2013 RZ53	0.00162 AU (242,000 km; 151,000 mi)	3	31.1[16]
2013-10-04	2013 TR12	0.00143 AU (214,000 km; 133,000 mi)	11	28.5[17]
2013-10-09	2013 TL127	0.00251 AU (375,000 km; 233,000 mi)	27	26.7[18]	Yes
2013-10-21	2013 UR1	0.00168 AU (251,000 km; 156,000 mi)	17	27.6[19]	Yes
2013-10-25	2013 UX2	0.00100 AU (150,000 km; 93,000 mi)	8	29.2[20]
2013-10-29	2013 UV3	0.00189 AU (283,000 km; 176,000 mi)	25	26.8[21]	Yes
2013-11-08	2013 VJ11	0.002283 AU (341,500 km; 212,200 mi)	16	27.8[22]	Yes
2013-11-29	2013 WH25	0.0009 AU (130,000 km; 84,000 mi)	7	29.6[23]
2013-12-11	2013 XS21	0.000484 AU (72,400 km; 45,000 mi)	7	29.4[24]
2013-12-23	2013 YB	0.00018 AU (27,000 km; 17,000 mi)	3	31.4[25]

Notes

1. For a list of current Earth close approaches see NEO Earth Close Approaches
2. Distance from the center of Earth to the center of the object. See the NASA/JPL Solar System Dynamics Glossary: Geocentric. Earth has a radius of approximately 6,400 km.
3. For asteroids without a well determined size an albedo of 0.05 is assumed. An albedo of 0.05 establishes an approximate upper limit to the size of the asteroid.

Additional examples

An example list of near-Earth asteroids that passed more than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2013.

• 2013 XH22, December 18, 2013 (1.9 LD)
• 2013 XY8, December 11, 2013 (2 LD)
• 3361 Orpheus, December 7, 2013 (40.1 LD)
• 2001 AV43, November 18, 2013 (3 LD)
• (52760) 1998 ML14, August 24, 2013
• (277475) 2005 WK4, August 8, 2013^[26]
• 2003 DZ15, July 30, 2013^[27]
• 2006 BL8, July 26, 2013^[27]
• 2009 FE, June 4, 2013^[27]
• (285263) 1998 QE2, May 29, 2013
• (163364) 2002 OD20, May 23, 2013
• (7888) 1993 UC, March 20, 2013
• 2013 ET, March 9, 2013

Plot of orbits of known potentially hazardous asteroids (size over 460 feet (140 m) and passing within 4.7 million miles (7.6×10⁶ km) of Earth's orbit) as of early 2013 (alternate image).

See also

• List of asteroid close approaches to Earth
• List of asteroid close approaches to Earth in 2012
• List of asteroid close approaches to Earth in 2014

References

1. ASTEROID RADAR RESEARCH
2. "JPL Small-Body Database Browser: (2013 BR27)" (last observation: 2013-02-01).
3. "JPL Small-Body Database Browser: (2013 CY)" (last observation: 2013-03-14).
4. "JPL Small-Body Database Browser: (2013 CY32)" (last observation: 2013-02-07).
5. "JPL Small-Body Database Browser: (2013 CL129)" (last observation: 2013-02-15).
6. "JPL Small-Body Database Browser: 367943 Duende (2012 DA14)" (last observation: 2013-02-21).
7. "JPL Small-Body Database Browser: (2013 EC)" (last observation: 2013-03-03).
8. "JPL Small-Body Database Browser: (2013 EC20)" (last observation: 2013-03-13).
9. "JPL Small-Body Database Browser: (2013 HT25)" (last observation: 2013-04-20).
10. "JPL Small-Body Database Browser: (2013 LR6)" (last observation: 2013-06-07).
11. "JPL Small-Body Database Browser: (2013 PJ10)" (last observation: 2013-09-09).
12. "JPL Small-Body Database Browser: (2013 PS13)" (last observation: 2013-08-09).
13. "JPL Small-Body Database Browser: (2013 RG)" (last observation: 2013-09-03).
14. "JPL Small-Body Database Browser: (2013 RO30)" (last observation: 2013-09-07).
15. "JPL Small-Body Database Browser: (2013 RF32)" (last observation: 2013-09-04).
16. "JPL Small-Body Database Browser: (2013 RZ53)" (last observation: 2013-09-16).
17. "JPL Small-Body Database Browser: (2013 TR12)" (last observation: 2013-10-07).
18. "JPL Small-Body Database Browser: (2013 TL127)" (last observation: 2013-10-12).
19. "JPL Small-Body Database Browser: (2013 UR1)" (last observation: 2013-10-30).
20. "JPL Small-Body Database Browser: (2013 UX2)" (last observation:2013-10-25).
21. "JPL Small-Body Database Browser: (2013 UV3)" (last observation: 2013-10-29).
22. "JPL Small-Body Database Browser: (2013 VJ11)" (last observation: 2013-11-11).
23. "JPL Small-Body Database Browser: (2013 WH25)" (last observation: 2013-11-28).
24. "JPL Small-Body Database Browser: (2013 XS21)" (last observation: 2013-12-14).
25. "JPL Small-Body Database Browser: (2013 YB)" (last observation: 2013-12-23).
26. Radar Images of Asteroid 2005 WK4
27. Astrowatch.net - June 2, 2013

External links

• http://neo.jpl.nasa.gov/ca/
• Summary of current NEOCP objects / Comments on NEOCP objects (Project Pluto)
• Near-Earth object close approaches ±30 days within 5 LD