List of asteroid close approaches to Earth in 2015

Time of discovery of asteroids which came closer to Earth than the moon in 2015

  After closest approach (63%)
  < 24 hours beforehand (11%)
  > a year beforehand (0%)
  > a week beforehand (4%)
  Other (22%)

Below is the list of asteroid close approaches to Earth in 2015.

Timeline of known close approaches less than one lunar distance from Earth in 2015

A list of known near-Earth asteroid close approaches less than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2015.[note 1]

Note this data does not include any of the 43 objects that collided with earth in 2015, none of which were discovered in advance, but were recorded by sensors designed to detect detonation of nuclear devices (of the 43 objects detected, 2 had an impact energy greater than that of a 1 kiloton device) [1].

     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 (in 2015 only one object was detected on approach this far in advance, 2015 XY261)

     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 approach (in 2015 no objects were detected this far in advance)

Date of
closest
approach		 Date
discovered		 Object Nominal geocentric
distance (AU)[note 2]		 Nominal geocentric
distance (LD)		 Size (m)
(approximate)		 (H)
(abs. mag)		 Closer
approach
to Moon		 Refs
2015-01-142015-01-152015 AQ430.00105 AU (157,000 km; 98,000 mi)0.416–1328.1[2]data · 2015 AQ43
2015-01-182015-01-272015 BP5130.00160 AU (239,000 km; 149,000 mi)0.6212–2726.7[3]Yesdata · 2015 BP513
2015-01-202015-01-212015 BE5110.00108 AU (162,000 km; 100,000 mi)0.424–928.9[4]data · 2015 BE511
2015-02-112015-02-122015 CH130.00189 AU (283,000 km; 176,000 mi)0.735–1128.5[5]data · 2015 CH13
2015-02-172015-02-182015 DD10.000262 AU (39,200 km; 24,400 mi)0.102–530.4[6]data · 2015 DD1
2015-02-182015-02-192015 DQ2240.000723 AU (108,200 km; 67,200 mi)0.303–929.3[7]data · 2015 DQ224
2015-03-102015-03-112015 ET0.000835 AU (124,900 km; 77,600 mi)0.3210–3226.7[8]data · 2015 ET
2015-03-122015-03-112015 EO60.000732 AU (109,500 km; 68,000 mi)0.282–930.2[9]data · 2015 EO6
2015-03-162015-03-172015 FU3440.00255 AU (381,000 km; 237,000 mi)0.992–431.0[10]data · 2015 FU344
2015-03-282015-03-252015 FM1180.00238 AU (356,000 km; 221,000 mi)0.924–1128.7[11]data · 2015 FM118
2015-04-122015-04-112015 GU0.000739 AU (110,600 km; 68,700 mi)0.295–1128.4[12]data · 2015 GU
2015-04-142015-04-162015 HG1820.00220 AU (329,000 km; 205,000 mi)0.864–1128.9[13]Yesdata · 2015 HG182
2015-04-162015-04-152015 GL130.00124 AU (186,000 km; 115,000 mi)0.484–928.8[14]Yesdata · 2015 GL13
2015-04-212015-04-182015 HD10.000395 AU (59,100 km; 36,700 mi)0.158–1927.4[15]data · 2015 HD1
2015-05-152015-05-122015 JF10.00208 AU (311,000 km; 193,000 mi)0.816–1328.1[16]Yesdata · 2015 JF1
2015-05-232015-05-252015 KW1210.00191 AU (286,000 km; 178,000 mi)0.7412–4026.1[17]data · 2015 KW121
2015-06-082015-06-072015 LF0.00132 AU (197,000 km; 123,000 mi)0.5110–3526.6[18]data · 2015 LF
2015-08-062015-08-072015 PK0.000531 AU (79,400 km; 49,400 mi)0.215–1528.1[19]data · 2015 PK
2015-09-222015-09-242015 SK70.000178 AU (26,600 km; 16,500 mi)0.0693–1428.9[20]data · 2015 SK7
2015-10-132015-10-112015 TC250.000741 AU (110,900 km; 68,900 mi)0.292[21]29.5[22]data · 2015 TC25
2015-10-222015-10-242015 UM520.000871 AU (130,300 km; 81,000 mi)0.347–1627.8[23]data · 2015 UM52
2015-11-052015-11-072015 VP640.00187 AU (280,000 km; 174,000 mi)0.735–1328.3[24]Yesdata · 2015 VP64
2015-11-062015-11-082015 VU640.000671 AU (100,400 km; 62,400 mi)0.262–430.6[25]data · 2015 VU64
2015-11-152015-11-142015 VY1050.000231 AU (34,600 km; 21,500 mi)0.0904–929.0[26]data · 2015 VY105
2015-11-202015-11-212015 WP20.00153 AU (229,000 km; 142,000 mi)0.601–530.1[27]Yesdata · 2015 WP2
2015-12-132015-12-162015 YJ0.000477 AU (71,400 km; 44,300 mi)0.195–1828.0[28]data · 2015 YJ
2015-12-152015-12-062015 XY2610.00193 AU (289,000 km; 179,000 mi)0.758–2527.1[29]data · 2015 XY261

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.

Additional examples

2015 TB145 was radar imaged in late October 2015

An example list of near-Earth asteroids that passed more than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2015.

  • 2015 AK1 (~50 meters in diameter) passed 5.57 lunar distances from Earth on 18 January 2015.[30]
  • 2015 BC (~60 meters in diameter) passed 1.64 lunar distances from Earth (1.50 lunar distances from the Moon) on 20 January 2015.[31]
  • (357439) 2004 BL86 (~700 meters in diameter) passed 3.1 lunar distances (1.2 million km) from Earth on 26 January 2015.
  • 2015 AZ43 (~70 meters in diameter) passed 0.0197 AU (2,950,000 km; 1,830,000 mi) from Earth on 15 February 2015.
  • 2014 YB35 (~500 meters in diameter) passed 11.7 lunar distances (4 million km) from Earth on 2015 Mar 27.
  • 2015 FW117 (~110 meters in diameter) passed 3.6 lunar distances (1.38 million km) (3.2 lunar distances from the Moon) (1.21 million km) on 1 April 2015.
  • 2015 HM10 (~80 meters in diameter) passed 1.15 lunar distances (440,000 km) (1.08 lunar distances from the Moon) (410,000 km) on 7 July 2015.
  • 2015 TQ21 (~15 meters in diameter) passed 1.005 lunar distances (390,000 km) on 7 October 2015
  • 2014 UR (~20 meters in diameter) passed 3.81 lunar distances (1.46 million km) from Earth on 18 October 2015.
  • 2015 TB145 (~600 meters in diameter) passed 1.3 lunar distances (480,000 km) (0.74 lunar distances from the Moon) (286,000 km) on 31 October 2015.
  • 2015 VO142 (~6 meters in diameter) passed 1.02 lunar distances (393,000 km) (0.85 lunar distances from the Moon) (327,000 km) on 24 November 2015
  • Risk-listed asteroid 2007 VE191 (~60 meters in diameter) was not observed when it probably passed roughly 0.5 AU (75,000,000 km; 46,000,000 mi) from Earth on 27 November 2015.
  • 2015 YB initially calculated to make a close approach to Earth on 19 December 2015 turned out to be a much further away inner main-belt asteroid. On 31 December 2015 the asteroid received the designation 2015 YU9.

Timeline of close approaches less than one Lunar distance from the Moon in 2015

The number of asteroids listed here are significantly less than those of asteroids approaching Earth for several reasons:

  • Asteroids approaching Earth not only move faster, but are brighter and are easier to detect with modern surveys due to these factors
  • Asteroids approaching closer to Earth are higher priority to confirm, and only confirmed asteroids are listed with a lunocentric approach distance
  • Those which make close approaches to the Moon are frequently lost in its glare, making them harder to confirm, and are more easily discovered during the new Moon, when the Moon is too close to the Sun for any asteroids to be detected while they are near to the Moon anyway.

These factors combined severely limit the amount of Moon-approaching asteroids, to a level many times lower than the detected asteroids to pass just as close to Earth instead.

Date of
closest
approach		 Object Nominal lunocentric
distance (AU)[note2 1]		 Nominal lunocentric
distance (LD)		 Size (m)
(approximate)		 (H)
approach
distance
to Earth
(LD)
2015-01-122015 BY30.00212 AU (317,000 km; 197,000 mi)0.827–2227.5[32]1.43
2015-01-182015 BP5130.000824 AU (123,300 km; 76,600 mi)0.3210–3126.7[3]0.62
2015-02-162015 DD10.00179 AU (268,000 km; 166,000 mi)0.692–530.4[6]0.10
2015-02-172015 DQ2240.00166 AU (248,000 km; 154,000 mi)0.653–929.3[7]0.30
2015-03-102015 ET0.00146 AU (218,000 km; 136,000 mi)0.5710–3226.7[8]0.32
2015-04-122015 GU0.00159 AU (238,000 km; 148,000 mi)0.625–1128.4[12]0.29
2015-04-142015 HG1820.00103 AU (154,000 km; 96,000 mi)0.404–1128.9[13]0.86
2015-04-162015 GL130.00112 AU (168,000 km; 104,000 mi)0.444–928.8[14]0.48
2015-04-212015 HD10.00186 AU (278,000 km; 173,000 mi)0.728–1927.4[15]0.15
2015-05-152015 JF10.00196 AU (293,000 km; 182,000 mi)0.766–1328.1[16]0.81
2015-07-242015 OQ210.00228 AU (341,000 km; 212,000 mi)0.896–1827.9[33]1.48
2015-09-222015 SK70.00245 AU (367,000 km; 228,000 mi)0.953–1428.9[20]0.069
2015-10-142015 TC250.00143 AU (214,000 km; 133,000 mi)0.563–929.5[22]0.29
2015-10-312015 TB1450.00191 AU (286,000 km; 178,000 mi)0.7460020.0[34]1.27
2015-11-052015 VP640.000758 AU (113,400 km; 70,500 mi)0.295–1328.3[24]0.73
2015-11-062015 VU640.00188 AU (281,000 km; 175,000 mi)0.732–430.6[25]0.26
2015-11-152015 VY1050.00197 AU (295,000 km; 183,000 mi)0.774–929.0[26]0.090
2015-11-202015 WP20.00115 AU (172,000 km; 107,000 mi)0.451–530.1[27]0.60
2015-11-222015 VO1420.00218 AU (326,000 km; 203,000 mi)0.853–1129.0[35]1.02
2015-12-132015 YJ0.000970 AU (145,100 km; 90,200 mi)0.385–1828.2[28]0.19
2015-12-142015 XR1690.00180 AU (269,000 km; 167,000 mi)0.704–1228.7[36]1.32
2015-12-212015 YQ10.00165 AU (247,000 km; 153,000 mi)0.645–1728.0[37]1.45

Notes

  1. ↑ Distance from the center of the Moon to the center of the object. the Moon has a radius of approximately 1,740 km.

See also

References

  1. ↑ https://cneos.jpl.nasa.gov/fireballs/
  2. ↑ "JPL Small-Body Database Browser: (2015 AQ43)" (last observation: 2015-01-23).
  3. 1 2 "JPL Small-Body Database Browser: (2015 BP513)" (last observation: 2015-01-29).
  4. ↑ "JPL Small-Body Database Browser: (2015 BE511)" (last observation: 2015-01-28).
  5. ↑ "JPL Small-Body Database Browser: (2015 CH13)" (last observation: 2015-02-14).
  6. 1 2 "JPL Small-Body Database Browser: (2015 DD1)" (last observation: 2015-02-25).
  7. 1 2 "JPL Small-Body Database Browser: (2015 DQ224)" (last observation: 2015-02-19).
  8. 1 2 "JPL Small-Body Database Browser: (2015 ET)" (last observation: 2015-03-25).
  9. ↑ "JPL Small-Body Database Browser: (2015 EO6)" (last observation: 2015-03-11).
  10. ↑ "JPL Small-Body Database Browser: (2015 FU344)" (last observation: 2015-03-18).
  11. ↑ "JPL Small-Body Database Browser: (2015 FM118)" (last observation: 2015-03-28).
  12. 1 2 "JPL Small-Body Database Browser: (2015 GU)" (last observation: 2015-04-12).
  13. 1 2 "JPL Small-Body Database Browser: (2015 HG182)" (last observation: 2015-04-17).
  14. 1 2 "JPL Small-Body Database Browser: (2015 GL13)" (last observation: 2015-04-16).
  15. 1 2 "JPL Small-Body Database Browser: (2015 HD1)" (last observation: 2015-04-21).
  16. 1 2 "JPL Small-Body Database Browser: (2015 JF1)" (last observation: 2015-05-14).
  17. ↑ "JPL Small-Body Database Browser: (2015 KW121)" (last observation: 2015-05-28).
  18. ↑ "JPL Small-Body Database Browser: (2015 LF)" (last observation: 2015-06-08).
  19. ↑ "JPL Small-Body Database Browser: (2015 PK)" (last observation: 2015-08-08).
  20. 1 2 "JPL Small-Body Database Browser: (2015 SK7)" (last observation: 2015-10-13).
  21. ↑ Wall, Mike. "6-Foot Wide 'Bald' Asteroid Is Smallest Ever Studied". space.com. Retrieved 3 December 2016.
  22. 1 2 "JPL Small-Body Database Browser: (2015 TC25)" (last observation: 2015-10-18).
  23. ↑ "JPL Small-Body Database Browser: (2015 UM52)" (last observation: 2015-10-25).
  24. 1 2 "JPL Small-Body Database Browser: (2015 VP64)" (last observation: 2015-11-08).
  25. 1 2 "JPL Small-Body Database Browser: (2015 VU64)" (last observation: 2015-11-10).
  26. 1 2 "JPL Small-Body Database Browser: (2015 VY105)" (last observation: 2015-11-15).
  27. 1 2 "JPL Small-Body Database Browser: (2015 WP2)" (last observation: 2015-11-23).
  28. 1 2 "JPL Small-Body Database Browser: (2015 YJ)" (last observation: 2015-12-18).
  29. ↑ "JPL Small-Body Database Browser: (2015 XY261)" (last observation: 2015-12-13).
  30. ↑ "JPL Small-Body Database Browser: (2015 AK1)" (last observation: 2015-01-16).
  31. ↑ "JPL Small-Body Database Browser: (2015 BC)" (last observation: 2015-01-17).
  32. ↑ "JPL Small-Body Database Browser: (2015 BY3)" (last observation: 2015-01-23).
  33. ↑ "JPL Small-Body Database Browser: (2015 OQ21)" (last observation: 2015-07-25).
  34. ↑ "JPL Small-Body Database Browser: (2015 TB145)" (last observation: 2015-11-01).
  35. ↑ "JPL Small-Body Database Browser: (2015 VO142)" (last observation: 2015-11-22).
  36. ↑ "JPL Small-Body Database Browser: (2015 XR169)" (last observation: 2015-12-13).
  37. ↑ "JPL Small-Body Database Browser: (2015 YQ1)" (last observation: 2015-12-22).
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