List of asteroid close approaches to Earth in 2016

Last updated

Time of discovery of asteroids which came closer to Earth than the Moon in 2016
Circle frame.svgAfter closest approach: 38 (63.3%)< 24 hours before: 5 (8.3%)up to 7 days before: 17 (28.3%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)
  •   After closest approach: 38 (63.3%)
  •   < 24 hours before: 5 (8.3%)
  •   up to 7 days before: 17 (28.3%)
  •   > one week before: 0 (0.0%)
  •   > 7 weeks before: 0 (0.0%)
  •   > one year before: 0 (0.0%)
Other Years
2014, 2015, 2016, 2017, 2018

Below is the list of asteroid close approaches to Earth in 2016.

Contents

Timeline of known close approaches less than one Lunar distance from Earth in 2016

A list of known near-Earth asteroid close approaches less than 1 lunar distance (0.0025696 AU (384,410 km; 238,860 mi)) from Earth in 2016. [note 1]

For reference, the radius of Earth is approximately 0.0000426 AU (6,370 km; 3,960 mi) or 0.0166 Lunar distances.
The orbit of geosynchronous satellites, however, is 0.000282 AU (42,200 km; 26,200 mi) or 0.110 Lunar distances. This year, 6 (possibly 7) asteroids traveled nearer than this, most notably 2016 DY30, which approached a mere 1.25 Earth radii (8000 km) from the surface.

While most asteroids on this list are confirmed, well-observed unconfirmed objects with a 50% or greater chance of passing within 1 LD of the Earth are included as well.

This list does not include any of the 32 objects that collided with earth in 2016, none of which were discovered in advance, but were recorded by sensors designed to detect detonation of nuclear devices (of the 32 objects detected 4 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

  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)

Date of
closest
approach		Date
discovered		Object Nominal geocentric
distance (AU) [note 2] 		Nominal geocentric
distance (LD)		Size (m)
(approximate)		(H)Closer
approach
to Moon
2016-01-102016-01-12 [2] 2016 AQ1640.000698 AU (104,400 km; 64,900 mi)0.272–729.9 [3]
2016-01-122016-01-13 [4] 2016 AH1640.000178 AU (26,600 km; 16,500 mi)0.0693–729.6 [5]
2016-01-132016-01-14 [6] 2016 AN1650.00120 AU (180,000 km; 112,000 mi)0.475–1827.6 [7]
2016-01-142016-01-14 [8] 2016 AN1640.000247 AU (37,000 km; 23,000 mi)0.0962–530.5 [9]
2016-02-062016-02-03 [10] 2016 CG180.00101 AU (151,000 km; 94,000 mi)0.393–1628.5 [11]
2016-02-102016-02-11 [12] 2016 CW2640.00141 AU (211,000 km; 131,000 mi)0.562–729.8 [13]
2016-02-112016-??-??P10tI8h0.00176 AU (263,000 km; 164,000 mi)0.692–330.7?
2016-02-132016-02-12 [14] 2016 CM1940.000517 AU (77,300 km; 48,100 mi)0.207–2127.5 [15]
2016-02-152016-02-16 [16] 2016 DB0.000828 AU (123,900 km; 77,000 mi)0.324–1428.5 [17]
2016-02-252016-02-26 [18] 2016 DY300.0000957 AU (14,320 km; 8,900 mi)0.0372–530.5 [19]
2016-02-262016-02-27 [20] 2016 DK20.00212 AU (317,000 km; 197,000 mi)0.833–1129.1 [21]
2016-02-292016-02-28 [22] 2016 DA310.00133 AU (199,000 km; 124,000 mi)0.522–729.9 [23] Yes
2016-03-032016-03-02 [24] 2016 EK10.00135 AU (202,000 km; 125,000 mi)0.532–929.1 [25] Yes
2016-03-042016-03-03 [26] 2016 EL10.00154 AU (230,000 km; 143,000 mi)0.605–2027.8 [27]
2016-03-082016-03-07 [28] 2016 EV280.00103 AU (154,000 km; 96,000 mi)0.404–1028.3 [29]
2016-03-102016-03-11 [30] 2016 EN1570.00216 AU (323,000 km; 201,000 mi)0.845–928.1 [31]
2016-03-112016-03-15 [32] 2016 EF1950.000214 AU (32,000 km; 19,900 mi)0.08216–3125.6 [33]
2016-03-142016-03-16 [34] 2016 FC10.00112 AU (168,000 km; 104,000 mi)0.444–829.1 [35]
2016-03-212016-03-31 [36] 2016 FN560.00257 AU (384,000 km; 239,000 mi)0.9995 [note 3] 35–8624.2 [37] Yes?
2016-03-232016-03-30 [38] 2016 FZ130.00252 AU (377,000 km; 234,000 mi)0.984–1028.3 [39] Yes
2016-03-252016-03-27 [40] 2016 FU60.00120 AU (180,000 km; 112,000 mi)0.474–929.0 [41]
2016-03-282016-03-31 [42] 2016 FR60 aka
BeUc1Ig [43] 		0.00256 AU (383,000 km; 238,000 mi)0.993–929.3?
2016-03-282016-03-31 [44] 2016 FE150.00181 AU (271,000 km; 168,000 mi)0.704–1228.8 [45] Yes
2016-04-012016-04-02 [46] 2016 GC252 aka

XGB1CE8 [43]

0.000336 AU (50,300 km; 31,200 mi)0.133–929.3?
2016-04-012016-04-05 [47] 2016 GS1340.00133 AU (199,000 km; 124,000 mi)0.525–1327.9 [48]
2016-04-042016-04-05 [49] 2016 GN1340.000382 AU (57,100 km; 35,500 mi)0.191–530.1 [50]
2016-04-052016-03-30 [51] 2016 FW130.00210 AU (314,000 km; 195,000 mi)0.822–729.4 [52]
2016-04-062016-04-09 [53] 2016 GO2060.00222 AU (332,000 km; 206,000 mi)0.869–3026.5
2016-04-082016-04-06 [54] 2016 GO1340.00222 AU (332,000 km; 206,000 mi)0.865–1827.3 [55]
2016-05-052016-05-03 [56] 2016 JS50.00136 AU (203,000 km; 126,000 mi)0.531–530.6 [57]
2016-06-042016-06-10 [58] 2016 LR510.00235 AU (352,000 km; 218,000 mi)0.917–2427.4 [59] Yes
2016-06-072016-06-04 [60] 2016 LT10.000966 AU (144,500 km; 89,800 mi)0.383–1029.0 [61]
2016-06-092016-06-08 [62] 2016 LP100.000479 AU (71,700 km; 44,500 mi)0.202–829.5 [63]
2016-07-072016-07-09 [64] 2016 NJ220.00191 AU (286,000 km; 178,000 mi)0.744–1628.3 [65]
2016-07-112016-07-09 [66] 2016 NK220.00177 AU (265,000 km; 165,000 mi)0.693–1228.9 [67]
2016-08-092016-08-16 [68]
(Unconfirmed)		DT16P090.000432 AU (64,600 km; 40,200 mi)0.171–332.9?
2016-08-282016-08-27 [69] 2016 QA20.000579 AU (86,600 km; 53,800 mi)0.2318–6925.2 [70]
2016-09-022016-09-04 [71] 2016 RR10.000865 AU (129,400 km; 80,400 mi)0.347–1927.7 [72]
2016-09-032016-09-04 [73] 2016 RS10.00127 AU (190,000 km; 118,000 mi)0.503–1129.1 [74]
2016-09-072016-09-05 [75] 2016 RB10.000271 AU (40,500 km; 25,200 mi)0.116–1827.8 [76]
2016-09-112016-09-11 [77] 2016 RN410.000159 AU (23,800 km; 14,800 mi)0.0621–531.0 [78]
2016-09-212016-09-22 [79] 2016 SJ0.000998 AU (149,300 km; 92,800 mi)0.393–929.0 [80]
2016-09-242016-09-26 [81] 2016 SU20.00235 AU (352,000 km; 218,000 mi)0.916–1927.8 [82]
2016-09-252016-09-26 [83] 2016 SA20.00205 AU (307,000 km; 191,000 mi)0.805–1628.2 [84]
2016-09-302016-10-01 [85] 2016 TD0.00151 AU (226,000 km; 140,000 mi)0.595–1628.2 [86]
2016-10-032016-10-02 [87] 2016 TH0.000858 AU (128,400 km; 79,800 mi)0.333–929.4 [88]
2016-10-082016-10-09 [89] 2016 TG940.00145 AU (217,000 km; 135,000 mi)0.563–829.7 [90]
2016-10-102016-10-11 [91] 2016 TS540.000502 AU (75,100 km; 46,700 mi)0.206–1927.8 [92]
2016-10-112016-10-09 [93] 2016 TB190.00212 AU (317,000 km; 197,000 mi)0.824–1128.9 [94]
2016-10-142016-10-20 [68]
(Unconfirmed)		XT9D9390.00241 AU (361,000 km; 224,000 mi)0.94 [note 4] 7–2027.7
2016-10-172016-10-19 [95] 2016 UD0.000485 AU (72,600 km; 45,100 mi)0.199–3426.6 [96]
2016-10-192016-11-06 [68]
(Unconfirmed)		XUA7AB30.00233 AU (349,000 km; 217,000 mi)0.91 [note 5] 4–1328.6
2016-11-022016-11-01 [97] 2016 VA0.000630 AU (94,200 km; 58,600 mi)0.246–2727.3 [98]
2016-11-052016-11-14 [68]
(Unconfirmed)		XV88D4F0.000245 AU (36,700 km; 22,800 mi)0.095 [note 6] 2–730.0
2016-11-072016-11-05 [99] 2016 VB10.00179 AU (268,000 km; 166,000 mi)0.704–1528.4 [100]
2016-11-102016-11-11 [101] 2016 VF180.000468 AU (70,000 km; 43,500 mi)0.182–829.9 [102]
2016-11-172016-11-18 [103] 2016 WT0.00129 AU (193,000 km; 120,000 mi)0.502–829.7 [104]
2016-11-212016-11-23 [105] 2016 WT30.00243 AU (364,000 km; 226,000 mi)0.944–1328.6 [106]
2016-11-252016-11-24 [107] 2016 WW20.000894 AU (133,700 km; 83,100 mi)0.353–1129.0 [108]
2016-11-302016-12-01 [109] 2016 XL230.000580 AU (86,800 km; 53,900 mi)0.233–1029.3 [110]

Warning Times by Size

This sub-section visualizes 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.

Abs Magnitude 30 and greater

Silhouette of man standing and facing forward Silhouette of man standing and facing forward.svg
Silhouette of man standing and facing forward

(size of a person for comparison)

Circle frame.svgAfter closest approach: 4 (50.0%)< 24 hours before: 2 (25.0%)up to 7 days before: 2 (25.0%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Abs Magnitude 29-30

Circle frame.svgAfter closest approach: 14 (66.7%)< 24 hours before: 0 (0.0%)up to 7 days before: 7 (33.3%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute Magnitude 28-29

Circle frame.svgAfter closest approach: 9 (64.3%)< 24 hours before: 1 (7.1%)up to 7 days before: 4 (28.6%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute Magnitude 27-28

Circle frame.svgAfter closest approach: 7 (58.3%)< 24 hours before: 1 (8.3%)up to 7 days before: 4 (33.3%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute Magnitude 26-27

Circle frame.svgAfter closest approach: 2 (100.0%)< 24 hours before: 0 (0.0%)up to 7 days before: 0 (0.0%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute Magnitude 25-26

Circle frame.svgAfter closest approach: 1 (50.0%)< 24 hours before: 1 (50.0%)up to 7 days before: 0 (0.0%)> one week before: 0 (0.0%)> 7 weeks before: 0 (0.0%)> one year before: 0 (0.0%)

Absolute Magnitude less than 25 (largest)

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

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. ↑ The nominal approach of 2016 FN56 to Earth was 0.0025694 AU, or roughly 23.5 kilometers closer than 1 Lunar distance. However, the error in this close approach totals roughly 0.000207 AU or 31,000 kilometers, making the chance that it actually did pass within 1 Lunar distance of Earth an almost exact 50-50 chance- a 49.9994%:50.0006% chance, to be specific.
  4. ↑ distance error: 0.000244 AU, approach range: 0.84 to 1.03 LD
  5. ↑ distance error: 0.000609 AU, approach range: 0.67 to 1.14 LD
  6. ↑ distance error: 0.0000808 AU, approach range: 0.064 to 0.13 LD

Timeline of close approaches less than one Lunar distance from the Moon in 2016

The number of asteroids listed here are significantly less than those of asteroids that approach Earth for several reasons. Asteroids that approach Earth not only move faster, but are brighter and are easier to detect with modern surveys because:

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

Date of
closest
approach		Object Nominal lunocentric
distance (AU) [note2 1] 		Nominal lunocentric
distance (LD)		Size (m)
(approximate)		(H)
approach
distance
to Earth
(LD)
2016-01-012016 AN660.00214 AU (320,000 km; 199,000 mi)0.837–2427.3 [111] 1.45
2016-01-102016 AQ1640.00125 AU (187,000 km; 116,000 mi)0.492–729.9 [3] 0.27
2016-01-112016 AH1640.000632 AU (94,500 km; 58,700 mi)0.253–729.7 [5] 0.069
2016-02-072016 CG180.00141 AU (211,000 km; 131,000 mi)0.553–1628.5 [11] 0.39
2016-02-102016 CW2640.00195 AU (292,000 km; 181,000 mi)0.762–729.8 [13] 0.56
2016-02-132016 CM1940.00204 AU (305,000 km; 190,000 mi)0.797–2127.5 [15] 0.20
2016-02-262016 DY300.00189 AU (283,000 km; 176,000 mi)0.742–530.5 [19] 0.037
2016-02-292016 DA310.00127 AU (190,000 km; 118,000 mi)0.492–729.9 [23] 0.52
2016-03-032016 EK10.00100 AU (150,000 km; 93,000 mi)0.392–929.1 [25] 0.53
2016-03-042016 EL10.00158 AU (236,000 km; 147,000 mi)0.615–2027.8 [27] 0.60
2016-03-052016 EG10.00256 AU (383,000 km; 238,000 mi)0.9983–1029.1 [112] 1.14
2016-03-082016 EV280.00116 AU (174,000 km; 108,000 mi)0.454–1028.5 [29] 0.40
2016-03-092016 EN1570.00228 AU (341,000 km; 212,000 mi)0.895–928.0 [31] 0.84
2016-03-102016 EF1950.00160 AU (239,000 km; 149,000 mi)0.6216–3125.5 [33] 0.082
2016-03-142016 FC10.00131 AU (196,000 km; 122,000 mi)0.514–829.1 [35] 0.44
2016-03-212016 FN560.00256 AU (383,000 km; 238,000 mi)0.995 [note2 2] 35–8624.2 [37] 0.9995
2016-03-242016 FZ130.000942 AU (140,900 km; 87,600 mi)0.374–1028.3 [39] 0.98
2016-03-262016 FU60.00213 AU (319,000 km; 198,000 mi)0.834–928.9 [41] 0.47
2016-03-282016 FE150.00124 AU (186,000 km; 115,000 mi)0.484–1228.8 [45] 0.70
2016-04-032016 FB130.00232 AU (347,000 km; 216,000 mi)0.9010–3126.7 [113] 1.23
2016-04-042016 GN1340.00220 AU (329,000 km; 205,000 mi)0.861–530.3 [50] 0.19
2016-04-112016 FV130.00232 AU (347,000 km; 216,000 mi)0.9013–4326.0 [114] 1.81
2016-05-062016 JS50.00160 AU (239,000 km; 149,000 mi)0.621–530.6 [57] 0.53
2016-06-042016 LR510.00215 AU (322,000 km; 200,000 mi)0.847–2427.4 [59] 0.91
2016-06-092016 LP100.00204 AU (305,000 km; 190,000 mi)0.802–829.5 [63] 0.20
2016-09-022016 RS10.00242 AU (362,000 km; 225,000 mi)0.943–1129.1 [74] 0.50
2016-09-072016 RK400.00128 AU (191,000 km; 119,000 mi)0.505–2827.4 [115] 1.35
2016-09-082016 RB10.00192 AU (287,000 km; 178,000 mi)0.756–1827.8 [76] 0.11
2016-09-102016 SF10.00156 AU (233,000 km; 145,000 mi)0.6124–8024.6 [116] 1.32
2016-09-102016 RE340.00217 AU (325,000 km; 202,000 mi)0.845–1528.3 [117] 1.19
2016-10-032016 TH0.000908 AU (135,800 km; 84,400 mi)0.353–929.4 [88] 0.33
2016-10-072016 TG940.00179 AU (268,000 km; 166,000 mi)0.703–829.7 [90] 0.56
2016-10-102016 TS540.00210 AU (314,000 km; 195,000 mi)0.826–1827.9 [92] 0.20
2016-10-182016 UD0.00107 AU (160,000 km; 99,000 mi)0.4210–3326.6 [96] 0.19
2016-11-022016 VA0.00229 AU (343,000 km; 213,000 mi)0.896–2727.3 [98] 0.24
2016-11-05XV88D4F0.00251 AU (375,000 km; 233,000 mi)0.982–730.00.095
2016-11-082016 VB10.00232 AU (347,000 km; 216,000 mi)0.904–1528.4 [100] 0.70
2016-11-102016 VF180.00220 AU (329,000 km; 205,000 mi)0.852–829.9 [102] 0.18
2016-11-172016 WY0.00242 AU (362,000 km; 225,000 mi)0.943–1029.3 [118] 1.73
2016-11-172016 WT0.00229 AU (343,000 km; 213,000 mi)0.892–829.7 [104] 0.50
2016-11-252016 WW20.000997 AU (149,100 km; 92,700 mi)0.393–1129.0 [108] 0.35
2016-11-272016 WR550.00255 AU (381,000 km; 237,000 mi)0.9915–1528.3 [119] 1.13
2016-11-302016 XL230.00169 AU (253,000 km; 157,000 mi)0.663–1029.3 [110] 0.23

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.
  2. ↑ For the Moon as well, the exact approach distance for 2016 FN56 is in high error, but with a higher certainty than to Earth: The error is slightly higher at 0.000208 AU, but as the approach distance is 0.0045 LD closer, the likelihood of a less-than-1-LD approach is nearly 0.6% higher.

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 2016.

Other objects

XF38FAC (Satellite 2015-007B) with an observation arc of only 17 minutes was estimated to have a chance of impacting Earth at 16:51 on 20 March 2016, [122] but turned out to be the SpaceX Falcon 9 second stage that sent Deep Space Climate Observatory out to L1.

See also

Related Research Articles

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2017 OO1 is a small asteroid, classified as near-Earth object of the Aten group, approximately 35–76 meters (115–249 feet) in diameter. It was first observed on 23 July 2017, by the robotic ATLAS survey at Mauna Loa Observatory, Hawaii, two days after the object had approached Earth at 0.33 lunar distances on 21 July 2017.

<span class="nowrap">2017 XO<sub>2</sub></span>

2017 XO2, also written 2017 XO2, is a sub-kilometer asteroid and near-Earth object of the Apollo group approximately 110 meters (360 feet) in diameter. The asteroid was discovered by Pan-STARRS in December 2017, after it already had approached Earth at 0.051 AU (7,600,000 km) or 20 lunar distances (LD) on 6 November 2017. On 26 April 2057, it will pass Earth at a similar distance of 21 LD again.

<span class="nowrap">2018 CN<sub>2</sub></span>

2018 CN2 is a very small asteroid, classified as a near-Earth object of the Apollo group, approximately 5 to 16 meters in diameter. It was first observed by astronomers of the Mount Lemmon Survey at Mount Lemmon Observatory, Arizona, on 8 February 2018, one day prior its close encounter with Earth at 0.18 lunar distances.

<span class="nowrap">2018 DV<sub>1</sub></span>

2018 DV1 is a micro-asteroid, classified as a near-Earth object of the Aten group, approximately 6–12 meters (20–40 feet) in diameter. It was first observed on 26 February 2018, by astronomers of the Mount Lemmon Survey at Mount Lemmon Observatory, Arizona, five days prior to its sub-lunar close encounter with Earth at less than 0.3 lunar distance.

<span class="nowrap">2010 WC<sub>9</sub></span>

2010 WC9, unofficially designated ZJ99C60, is a sub-kilometer near-Earth asteroid of the Apollo group, approximately 100 meters (330 feet) in diameter. First observed for eleven days by the Catalina Sky Survey in 2010, the asteroid was recovered in May 2018 during its sub-lunar close encounter with Earth.

References

  1. ↑ NASA.gov
  2. ↑ "IAU Minor Planet Center".
  3. 1 2 "JPL Small-Body Database Browser: (2016 AQ164)" (last observation: 2016-01-14).
  4. ↑ "IAU Minor Planet Center".
  5. 1 2 "JPL Small-Body Database Browser: (2016 AH164)" (last observation: 2016-01-13).
  6. ↑ "IAU Minor Planet Center".
  7. ↑ "JPL Small-Body Database Browser: (2016 AN165)" (last observation: 2016-01-14).
  8. ↑ "IAU Minor Planet Center".
  9. ↑ "JPL Small-Body Database Browser: (2016 AN164)" (last observation: 2016-01-14).
  10. ↑ "IAU Minor Planet Center".
  11. 1 2 "JPL Small-Body Database Browser: (2016 CG18)" (last observation: 2016-02-05).
  12. ↑ "IAU Minor Planet Center".
  13. 1 2 "JPL Small-Body Database Browser: (2016 CW264)" (last observation: 2016-02-12).
  14. ↑ "IAU Minor Planet Center".
  15. 1 2 "JPL Small-Body Database Browser: (2016 CM194)" (last observation: 2016-02-13).
  16. ↑ "IAU Minor Planet Center".
  17. ↑ "JPL Small-Body Database Browser: (2016 DB)" (last observation: 2016-02-17).
  18. ↑ "IAU Minor Planet Center".
  19. 1 2 "JPL Small-Body Database Browser: (2016 DY30)" (last observation: 2016-02-27).
  20. ↑ "IAU Minor Planet Center".
  21. ↑ "JPL Small-Body Database Browser: (2016 DK2)" (last observation: 2016-03-01).
  22. ↑ "IAU Minor Planet Center".
  23. 1 2 "JPL Small-Body Database Browser: (2016 DA31)" (last observation: 2016-02-29).
  24. ↑ "IAU Minor Planet Center".
  25. 1 2 "JPL Small-Body Database Browser: (2016 EK1)" (last observation: 2016-03-03).
  26. ↑ "IAU Minor Planet Center".
  27. 1 2 "JPL Small-Body Database Browser: (2016 EL1)" (last observation: 2016-03-03).
  28. ↑ "IAU Minor Planet Center".
  29. 1 2 "JPL Small-Body Database Browser: (2016 EV28)" (last observation: 2016-03-07).
  30. ↑ "IAU Minor Planet Center".
  31. 1 2 "JPL Small-Body Database Browser: (2016 EN157)" (last observation: 2016-03-15).
  32. ↑ "IAU Minor Planet Center".
  33. 1 2 "JPL Small-Body Database Browser: (2016 EF195)" (last observation: 2016-03-17).
  34. ↑ "IAU Minor Planet Center".
  35. 1 2 "JPL Small-Body Database Browser: (2016 FC1)" (last observation: 2016-03-18).
  36. ↑ "IAU Minor Planet Center".
  37. 1 2 "JPL Small-Body Database Browser: (2016 FN56)" (last observation: 2016-04-05).
  38. ↑ "IAU Minor Planet Center".
  39. 1 2 "JPL Small-Body Database Browser: (2016 FZ13)" (last observation: 2016-04-06).
  40. ↑ "IAU Minor Planet Center".
  41. 1 2 "JPL Small-Body Database Browser: (2016 FU6)" (last observation: 2016-03-28).
  42. ↑ "IAU Minor Planet Center".
  43. 1 2 "NEOCP Objects in 2016".
  44. ↑ "IAU Minor Planet Center".
  45. 1 2 "JPL Small-Body Database Browser: (2016 FE15)" (last observation: 2016-04-03).
  46. ↑ "IAU Minor Planet Center".
  47. ↑ "IAU Minor Planet Center".
  48. ↑ "JPL Small-Body Database Browser: (2016 GS134)" (last observation: 2016-04-07).
  49. ↑ "IAU Minor Planet Center".
  50. 1 2 "JPL Small-Body Database Browser: (2016 GN134)" (last observation: 2016-04-07).
  51. ↑ "IAU Minor Planet Center".
  52. ↑ "JPL Small-Body Database Browser: (2016 FW13)" (last observation: 2016-04-03).
  53. ↑ "IAU Minor Planet Center".
  54. ↑ "IAU Minor Planet Center".
  55. ↑ "JPL Small-Body Database Browser: (2016 GO134)" (last observation: 2016-04-08).
  56. ↑ "IAU Minor Planet Center".
  57. 1 2 "JPL Small-Body Database Browser: (2016 JS5)" (last observation: 2016-05-05).
  58. ↑ "IAU Minor Planet Center".
  59. 1 2 "JPL Small-Body Database Browser: (2016 LR51)" (last observation: 2016-06-13).
  60. ↑ "IAU Minor Planet Center".
  61. ↑ "JPL Small-Body Database Browser: (2016 LT1)" (last observation: 2016-06-06).
  62. ↑ "IAU Minor Planet Center".
  63. 1 2 "JPL Small-Body Database Browser: (2016 LP10)" (last observation: 2016-06-09).
  64. ↑ "IAU Minor Planet Center".
  65. ↑ "JPL Small-Body Database Browser: (2016 NJ22)" (last observation: 2016-07-10).
  66. ↑ "IAU Minor Planet Center".
  67. ↑ "JPL Small-Body Database Browser: (2016 NK22)" (last observation: 2016-07-10).
  68. 1 2 3 4 "NEOCP Objects in 2017".
  69. ↑ "IAU Minor Planet Center".
  70. ↑ "JPL Small-Body Database Browser: (2016 QA2)" (last observation: 2016-08-29).
  71. ↑ "IAU Minor Planet Center".
  72. ↑ "JPL Small-Body Database Browser: (2016 RR1)" (last observation: 2016-09-06).
  73. ↑ "IAU Minor Planet Center".
  74. 1 2 "JPL Small-Body Database Browser: (2016 RS1)" (last observation: 2016-09-06).
  75. ↑ "IAU Minor Planet Center".
  76. 1 2 "JPL Small-Body Database Browser: (2016 RB1)" (last observation: 2016-09-06).
  77. ↑ "IAU Minor Planet Center".
  78. ↑ "JPL Small-Body Database Browser: (2016 RN41)" (last observation: 2016-09-11).
  79. ↑ "IAU Minor Planet Center".
  80. ↑ "JPL Small-Body Database Browser: (2016 SJ)" (last observation: 2016-09-24).
  81. ↑ "IAU Minor Planet Center".
  82. ↑ "JPL Small-Body Database Browser: (2016 SU2)" (last observation: 2016-09-27).
  83. ↑ "IAU Minor Planet Center".
  84. ↑ "JPL Small-Body Database Browser: (2016 SA2)" (last observation: 2016-09-26).
  85. ↑ "IAU Minor Planet Center".
  86. ↑ "JPL Small-Body Database Browser: (2016 TD)" (last observation: 2016-10-02).
  87. ↑ "IAU Minor Planet Center".
  88. 1 2 "JPL Small-Body Database Browser: (2016 TH)" (last observation: 2016-10-03).
  89. ↑ "IAU Minor Planet Center".
  90. 1 2 "JPL Small-Body Database Browser: (2016 TG94)" (last observation: 2016-10-10).
  91. ↑ "IAU Minor Planet Center".
  92. 1 2 "JPL Small-Body Database Browser: (2016 TS54)" (last observation: 2016-10-12).
  93. ↑ "IAU Minor Planet Center".
  94. ↑ "JPL Small-Body Database Browser: (2016 TB19)" (last observation: 2016-10-10).
  95. ↑ "IAU Minor Planet Center".
  96. 1 2 "JPL Small-Body Database Browser: (2016 UD)" (last observation: 2016-10-20).
  97. ↑ "IAU Minor Planet Center".
  98. 1 2 "JPL Small-Body Database Browser: (2016 VA)" (last observation: 2016-11-01).
  99. ↑ "IAU Minor Planet Center".
  100. 1 2 "JPL Small-Body Database Browser: (2016 VB1)" (last observation: 2016-11-06).
  101. ↑ "IAU Minor Planet Center".
  102. 1 2 "JPL Small-Body Database Browser: (2016 VF18)" (last observation: 2016-11-11).
  103. ↑ "IAU Minor Planet Center".
  104. 1 2 "JPL Small-Body Database Browser: (2016 WT)" (last observation: 2016-11-21).
  105. ↑ "IAU Minor Planet Center".
  106. ↑ "JPL Small-Body Database Browser: (2016 WT3)" (last observation: 2016-11-25).
  107. ↑ "IAU Minor Planet Center".
  108. 1 2 "JPL Small-Body Database Browser: (2016 Ww2)" (last observation: 2016-11-24).
  109. ↑ "IAU Minor Planet Center".
  110. 1 2 "JPL Small-Body Database Browser: (2016 XL23)" (last observation: 2016-12-02).
  111. ↑ "JPL Small-Body Database Browser: (2016 AN66)" (last observation: 2016-01-16).
  112. ↑ "JPL Small-Body Database Browser: (2016 EG1)" (last observation: 2016-03-04).
  113. ↑ "JPL Small-Body Database Browser: (2016 FB13)" (last observation: 2016-04-02).
  114. ↑ "JPL Small-Body Database Browser: (2016 FV13)" (last observation: 2016-04-10).
  115. ↑ "JPL Small-Body Database Browser: (2016 RK40)" (last observation: 2016-09-14).
  116. ↑ "JPL Small-Body Database Browser: (2016 SF1)" (last observation: 2016-09-26).
  117. ↑ "JPL Small-Body Database Browser: (2016 RE34)" (last observation: 2016-09-17).
  118. ↑ "JPL Small-Body Database Browser: (2016 WY)" (last observation: 2016-11-21).
  119. ↑ "JPL Small-Body Database Browser: (2016 WR55)" (last observation: 2016-11-25).
  120. ↑ Comet Flying by Earth Observed with Radar and Infrared. NASA press release. 24 March 2016.
  121. ↑ Near Earth Objects - Dynamic Site 2016FE13 ▹ CLOSE APPROACHES
  122. ↑ XF38FAC at Project Pluto Archived 2016-03-20 at the Wayback Machine
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