List of asteroid close approaches to Earth in 2010

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Below is the list of asteroid close approaches to Earth in 2010.

Quick Facts
Asteroids which came closer to Earth than the Moon in 2010 by time of discovery
ThumbAfter closest approach: 11 (47.8%)< 24 hours before: 0 (0.0%)up to 7 days before: 12 (52.2%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)
  •   After closest approach: 11 (47.8%)
  •   < 24 hours before: 0 (0.0%)
  •   up to 7 days before: 12 (52.2%)
  •   > one week before: 0 (0.0%)
  •   > 7 weeks before: 0 (0.0%)
  •   > one year before: 0 (0.0%)
Other years
2008, 2009, 2010, 2011, 2012
Close

Timeline of close approaches less than one lunar distance from Earth in 2010

Summarize
Perspective

A list of known near-Earth asteroid close approaches less than 1 lunar distance (384,400 km or 0.00257 AU) from Earth in 2010, based on the close approach database of the Center for Near-Earth Object Studies (CNEOS).[1]

The CNEOS database of close approaches lists some close approaches a full orbit or more before the discovery of the object, derived by orbit calculation. The list below only includes close approaches that are evidenced by observations, thus the pre-discovery close approaches would only be included if the object was found by precovery, but there was no such close approach in 2010.

This list and the relevant databases do not consider impacts as close approaches, thus this list does not include any of the objects that collided with Earth's atmosphere in 2010, none of which were discovered in advance, but were observed visually or recorded by sensors designed to detect detonation of nuclear devices.

     Rows highlighted red indicate objects which were not discovered until after closest approach

     Rows highlighted yellow indicate objects discovered less than 24 hours before closest approach

     Rows highlighted green indicate objects discovered more than one week before closest approach

     Rows highlighted turquoise indicate objects discovered more than 7 weeks before closest approach

     Rows highlighted blue indicate objects discovered more than one year before closest approach
(i.e. objects successfully cataloged on a previous orbit, rather than being detected during final approach)

More information Date ofclosest approach, Date discovered ...
Date of
closest
approach
Date
discovered
Object Nominal geocentric
distance (AU)[note 1]
Nominal geocentric
distance (LD)
Size (m)
(approximate)
(H)
(abs. mag.)
Closer
approach
to Moon
Refs[2][3]
2010-01-132010-01-102010 AL300.000862 AU (129,000 km; 80,100 mi)0.349.7-2227.2[4]data · 2010 AL30
2010-02-172010-02-142010 CK190.00233 AU (349,000 km; 217,000 mi)0.917-1627.9[5]data · 2010 CK19
2010-04-182010-04-202010 HP200.00160 AU (239,000 km; 149,000 mi)0.628.3–1927.5data · 2010 HP20
2010-05-232010-05-202010 KO100.00116 AU (174,000 km; 108,000 mi)0.4510-2327.1[6]data · 2010 KO10
2010-05-262010-05-242010 KV390.00167 AU (250,000 km; 155,000 mi)0.6512-2626.8[7]data · 2010 KV39
2010-09-082010-09-052010 RX300.00166 AU (248,000 km; 154,000 mi)0.6410-2327.1[8]data · 2010 RX30
2010-09-082010-09-052010 RF120.000531 AU (79,400 km; 49,400 mi)0.215.5-1228.4[9]data · 2010 RF12
2010-09-082010-09-102010 RK530.000482 AU (72,100 km; 44,800 mi)0.197-1627.9[10]data · 2010 RK53
2010-09-302010-09-282010 SK130.00178 AU (266,000 km; 165,000 mi)0.698.8-2027.4[11]data · 2010 SK13
2010-10-092010-10-112010 TW540.00108 AU (162,000 km; 100,000 mi)0.428-1827.6[12]data · 2010 TW54
2010-10-112010-10-132010 TN550.00219 AU (328,000 km; 204,000 mi)0.8511-2526.9[13]Yesdata · 2010 TN55
2010-10-122010-10-092010 TD540.000346 AU (51,800 km; 32,200 mi)0.134.4-9.928.9[14]data · 2010 TD54
2010-10-162010-10-172010 UE0.000763 AU (114,100 km; 70,900 mi)0.303-729.6[15]data · 2010 UE
2010-10-172010-10-122010 TE550.00245 AU (367,000 km; 228,000 mi)0.956.7-1528.0[16]Yesdata · 2010 TE55
2010-10-262010-10-302010 UY70.00163 AU (244,000 km; 152,000 mi)0.635.3-1228.5[17]Yesdata · 2010 UY7
2010-11-022010-10-292010 UJ70.00191 AU (286,000 km; 178,000 mi)0.7422-4925.4[18]data · 2010 UJ7
2010-11-022010-11-032010 VN10.000866 AU (129,600 km; 80,500 mi)0.345.8-1328.3[19]data · 2010 VN1
2010-11-072010-11-062010 VR210.00238 AU (356,000 km; 221,000 mi)0.923.8-8.429.3[20]data · 2010 VR21
2010-11-122010-11-142010 VP1390.000537 AU (80,300 km; 49,900 mi)0.213.8-8.629.2[21]data · 2010 VP139
2010-11-132010-11-152010 VC1400.00194 AU (290,000 km; 180,000 mi)0.757-1627.9[22]data · 2010 VC140
2010-11-172010-11-162010 WA0.000260 AU (38,900 km; 24,200 mi)0.102.7-5.930.0[23]data · 2010 WA
2010-11-292010-12-022010 XR0.00129 AU (193,000 km; 120,000 mi)0.5011-2526.9[24]data · 2010 XR
2010-11-302010-12-012010 XB0.000352 AU (52,700 km; 32,700 mi)0.143.2-7.129.6[25]data · 2010 XB
Close

Warning times by size

This sub-section visualises the warning times of the close approaches listed in the above table, depending on the size of the asteroid. The sizes of the charts show the relative sizes of the asteroids to scale. For comparison, the approximate size of a person is also shown. This is based the absolute magnitude of each asteroid, an approximate measure of size based on brightness.

Absolute magnitude H ≥ 30 (smallest)

Silhouette of man standing and facing forward
Silhouette of man standing and facing forward

(size of a person for comparison)

After closest approach: 0 (0.0%)< 24 hours before: 0 (0.0%)up to 7 days before: 1 (100.0%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute magnitude 30 > H ≥ 29

After closest approach: 3 (75.0%)< 24 hours before: 0 (0.0%)up to 7 days before: 1 (25.0%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute magnitude 29 > H ≥ 28

After closest approach: 2 (40.0%)< 24 hours before: 0 (0.0%)up to 7 days before: 3 (60.0%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute magnitude 28 > H ≥ 27

After closest approach: 4 (44.4%)< 24 hours before: 0 (0.0%)up to 7 days before: 5 (55.6%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute magnitude 27 > H ≥ 26

After closest approach: 2 (66.7%)< 24 hours before: 0 (0.0%)up to 7 days before: 1 (33.3%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute magnitude 26 > H ≥ 25

After closest approach: 0 (0.0%)< 24 hours before: 0 (0.0%)up to 7 days before: 1 (100.0%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)
  •   After closest approach: 0 (0.0%)
  •   < 24 hours before: 0 (0.0%)
  •   up to 7 days before: 1 (100.0%)
  •   > one week before: 0 (0.0%)
  •   > 7 weeks before: 0 (0.0%)
  •   > one year before: 0 (0.0%)

Absolute magnitude 25 > H (largest)

None

Notes

  1. 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.

2015 AQ43 may have passed as close as 0.00012 AU (18,000 km; 11,000 mi) (0.05 Lunar Distances) from the Earth on January 15, 2010, but the nominal distance suggests it only passed 5 LD away.

See also

References

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