Time of discovery of asteroids which came closer to Earth than the Moon in 2016 | ||
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Below is the list of asteroid close approaches to 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 |
---|---|---|---|---|---|---|---|
2016-01-10 | 2016-01-12 [2] | 2016 AQ164 | 0.000698 AU (104,400 km; 64,900 mi) | 0.27 | 2–7 | 29.9 [3] | |
2016-01-12 | 2016-01-13 [4] | 2016 AH164 | 0.000178 AU (26,600 km; 16,500 mi) | 0.069 | 3–7 | 29.6 [5] | |
2016-01-13 | 2016-01-14 [6] | 2016 AN165 | 0.00120 AU (180,000 km; 112,000 mi) | 0.47 | 5–18 | 27.6 [7] | |
2016-01-14 | 2016-01-14 [8] | 2016 AN164 | 0.000247 AU (37,000 km; 23,000 mi) | 0.096 | 2–5 | 30.5 [9] | |
2016-02-06 | 2016-02-03 [10] | 2016 CG18 | 0.00101 AU (151,000 km; 94,000 mi) | 0.39 | 3–16 | 28.5 [11] | |
2016-02-10 | 2016-02-11 [12] | 2016 CW264 | 0.00141 AU (211,000 km; 131,000 mi) | 0.56 | 2–7 | 29.8 [13] | |
2016-02-11 | 2016-??-?? | P10tI8h | 0.00176 AU (263,000 km; 164,000 mi) | 0.69 | 2–3 | 30.7 | ? |
2016-02-13 | 2016-02-12 [14] | 2016 CM194 | 0.000517 AU (77,300 km; 48,100 mi) | 0.20 | 7–21 | 27.5 [15] | |
2016-02-15 | 2016-02-16 [16] | 2016 DB | 0.000828 AU (123,900 km; 77,000 mi) | 0.32 | 4–14 | 28.5 [17] | |
2016-02-25 | 2016-02-26 [18] | 2016 DY30 | 0.0000957 AU (14,320 km; 8,900 mi) | 0.037 | 2–5 | 30.5 [19] | |
2016-02-26 | 2016-02-27 [20] | 2016 DK2 | 0.00212 AU (317,000 km; 197,000 mi) | 0.83 | 3–11 | 29.1 [21] | |
2016-02-29 | 2016-02-28 [22] | 2016 DA31 | 0.00133 AU (199,000 km; 124,000 mi) | 0.52 | 2–7 | 29.9 [23] | Yes |
2016-03-03 | 2016-03-02 [24] | 2016 EK1 | 0.00135 AU (202,000 km; 125,000 mi) | 0.53 | 2–9 | 29.1 [25] | Yes |
2016-03-04 | 2016-03-03 [26] | 2016 EL1 | 0.00154 AU (230,000 km; 143,000 mi) | 0.60 | 5–20 | 27.8 [27] | |
2016-03-08 | 2016-03-07 [28] | 2016 EV28 | 0.00103 AU (154,000 km; 96,000 mi) | 0.40 | 4–10 | 28.3 [29] | |
2016-03-10 | 2016-03-11 [30] | 2016 EN157 | 0.00216 AU (323,000 km; 201,000 mi) | 0.84 | 5–9 | 28.1 [31] | |
2016-03-11 | 2016-03-15 [32] | 2016 EF195 | 0.000214 AU (32,000 km; 19,900 mi) | 0.082 | 16–31 | 25.6 [33] | |
2016-03-14 | 2016-03-16 [34] | 2016 FC1 | 0.00112 AU (168,000 km; 104,000 mi) | 0.44 | 4–8 | 29.1 [35] | |
2016-03-21 | 2016-03-31 [36] | 2016 FN56 | 0.00257 AU (384,000 km; 239,000 mi) | 0.9995 [note 3] | 35–86 | 24.2 [37] | Yes? |
2016-03-23 | 2016-03-30 [38] | 2016 FZ13 | 0.00252 AU (377,000 km; 234,000 mi) | 0.98 | 4–10 | 28.3 [39] | Yes |
2016-03-25 | 2016-03-27 [40] | 2016 FU6 | 0.00120 AU (180,000 km; 112,000 mi) | 0.47 | 4–9 | 29.0 [41] | |
2016-03-28 | 2016-03-31 [42] | 2016 FR60 aka BeUc1Ig [43] | 0.00256 AU (383,000 km; 238,000 mi) | 0.99 | 3–9 | 29.3 | ? |
2016-03-28 | 2016-03-31 [44] | 2016 FE15 | 0.00181 AU (271,000 km; 168,000 mi) | 0.70 | 4–12 | 28.8 [45] | Yes |
2016-04-01 | 2016-04-02 [46] | 2016 GC252 aka XGB1CE8 [43] | 0.000336 AU (50,300 km; 31,200 mi) | 0.13 | 3–9 | 29.3 | ? |
2016-04-01 | 2016-04-05 [47] | 2016 GS134 | 0.00133 AU (199,000 km; 124,000 mi) | 0.52 | 5–13 | 27.9 [48] | |
2016-04-04 | 2016-04-05 [49] | 2016 GN134 | 0.000382 AU (57,100 km; 35,500 mi) | 0.19 | 1–5 | 30.1 [50] | |
2016-04-05 | 2016-03-30 [51] | 2016 FW13 | 0.00210 AU (314,000 km; 195,000 mi) | 0.82 | 2–7 | 29.4 [52] | |
2016-04-06 | 2016-04-09 [53] | 2016 GO206 | 0.00222 AU (332,000 km; 206,000 mi) | 0.86 | 9–30 | 26.5 | |
2016-04-08 | 2016-04-06 [54] | 2016 GO134 | 0.00222 AU (332,000 km; 206,000 mi) | 0.86 | 5–18 | 27.3 [55] | |
2016-05-05 | 2016-05-03 [56] | 2016 JS5 | 0.00136 AU (203,000 km; 126,000 mi) | 0.53 | 1–5 | 30.6 [57] | |
2016-06-04 | 2016-06-10 [58] | 2016 LR51 | 0.00235 AU (352,000 km; 218,000 mi) | 0.91 | 7–24 | 27.4 [59] | Yes |
2016-06-07 | 2016-06-04 [60] | 2016 LT1 | 0.000966 AU (144,500 km; 89,800 mi) | 0.38 | 3–10 | 29.0 [61] | |
2016-06-09 | 2016-06-08 [62] | 2016 LP10 | 0.000479 AU (71,700 km; 44,500 mi) | 0.20 | 2–8 | 29.5 [63] | |
2016-07-07 | 2016-07-09 [64] | 2016 NJ22 | 0.00191 AU (286,000 km; 178,000 mi) | 0.74 | 4–16 | 28.3 [65] | |
2016-07-11 | 2016-07-09 [66] | 2016 NK22 | 0.00177 AU (265,000 km; 165,000 mi) | 0.69 | 3–12 | 28.9 [67] | |
2016-08-09 | 2016-08-16 [68] (Unconfirmed) | DT16P09 | 0.000432 AU (64,600 km; 40,200 mi) | 0.17 | 1–3 | 32.9 | ? |
2016-08-28 | 2016-08-27 [69] | 2016 QA2 | 0.000579 AU (86,600 km; 53,800 mi) | 0.23 | 18–69 | 25.2 [70] | |
2016-09-02 | 2016-09-04 [71] | 2016 RR1 | 0.000865 AU (129,400 km; 80,400 mi) | 0.34 | 7–19 | 27.7 [72] | |
2016-09-03 | 2016-09-04 [73] | 2016 RS1 | 0.00127 AU (190,000 km; 118,000 mi) | 0.50 | 3–11 | 29.1 [74] | |
2016-09-07 | 2016-09-05 [75] | 2016 RB1 | 0.000271 AU (40,500 km; 25,200 mi) | 0.11 | 6–18 | 27.8 [76] | |
2016-09-11 | 2016-09-11 [77] | 2016 RN41 | 0.000159 AU (23,800 km; 14,800 mi) | 0.062 | 1–5 | 31.0 [78] | |
2016-09-21 | 2016-09-22 [79] | 2016 SJ | 0.000998 AU (149,300 km; 92,800 mi) | 0.39 | 3–9 | 29.0 [80] | |
2016-09-24 | 2016-09-26 [81] | 2016 SU2 | 0.00235 AU (352,000 km; 218,000 mi) | 0.91 | 6–19 | 27.8 [82] | |
2016-09-25 | 2016-09-26 [83] | 2016 SA2 | 0.00205 AU (307,000 km; 191,000 mi) | 0.80 | 5–16 | 28.2 [84] | |
2016-09-30 | 2016-10-01 [85] | 2016 TD | 0.00151 AU (226,000 km; 140,000 mi) | 0.59 | 5–16 | 28.2 [86] | |
2016-10-03 | 2016-10-02 [87] | 2016 TH | 0.000858 AU (128,400 km; 79,800 mi) | 0.33 | 3–9 | 29.4 [88] | |
2016-10-08 | 2016-10-09 [89] | 2016 TG94 | 0.00145 AU (217,000 km; 135,000 mi) | 0.56 | 3–8 | 29.7 [90] | |
2016-10-10 | 2016-10-11 [91] | 2016 TS54 | 0.000502 AU (75,100 km; 46,700 mi) | 0.20 | 6–19 | 27.8 [92] | |
2016-10-11 | 2016-10-09 [93] | 2016 TB19 | 0.00212 AU (317,000 km; 197,000 mi) | 0.82 | 4–11 | 28.9 [94] | |
2016-10-14 | 2016-10-20 [68] (Unconfirmed) | XT9D939 | 0.00241 AU (361,000 km; 224,000 mi) | 0.94 [note 4] | 7–20 | 27.7 | |
2016-10-17 | 2016-10-19 [95] | 2016 UD | 0.000485 AU (72,600 km; 45,100 mi) | 0.19 | 9–34 | 26.6 [96] | |
2016-10-19 | 2016-11-06 [68] (Unconfirmed) | XUA7AB3 | 0.00233 AU (349,000 km; 217,000 mi) | 0.91 [note 5] | 4–13 | 28.6 | |
2016-11-02 | 2016-11-01 [97] | 2016 VA | 0.000630 AU (94,200 km; 58,600 mi) | 0.24 | 6–27 | 27.3 [98] | |
2016-11-05 | 2016-11-14 [68] (Unconfirmed) | XV88D4F | 0.000245 AU (36,700 km; 22,800 mi) | 0.095 [note 6] | 2–7 | 30.0 | |
2016-11-07 | 2016-11-05 [99] | 2016 VB1 | 0.00179 AU (268,000 km; 166,000 mi) | 0.70 | 4–15 | 28.4 [100] | |
2016-11-10 | 2016-11-11 [101] | 2016 VF18 | 0.000468 AU (70,000 km; 43,500 mi) | 0.18 | 2–8 | 29.9 [102] | |
2016-11-17 | 2016-11-18 [103] | 2016 WT | 0.00129 AU (193,000 km; 120,000 mi) | 0.50 | 2–8 | 29.7 [104] | |
2016-11-21 | 2016-11-23 [105] | 2016 WT3 | 0.00243 AU (364,000 km; 226,000 mi) | 0.94 | 4–13 | 28.6 [106] | |
2016-11-25 | 2016-11-24 [107] | 2016 WW2 | 0.000894 AU (133,700 km; 83,100 mi) | 0.35 | 3–11 | 29.0 [108] | |
2016-11-30 | 2016-12-01 [109] | 2016 XL23 | 0.000580 AU (86,800 km; 53,900 mi) | 0.23 | 3–10 | 29.3 [110] |
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
(size of a person for comparison)
Abs Magnitude 29-30
Absolute Magnitude 28-29
Absolute Magnitude 27-28
Absolute Magnitude 26-27
Absolute Magnitude 25-26
Absolute Magnitude less than 25 (largest)
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) |
---|---|---|---|---|---|---|
2016-01-01 | 2016 AN66 | 0.00214 AU (320,000 km; 199,000 mi) | 0.83 | 7–24 | 27.3 [111] | 1.45 |
2016-01-10 | 2016 AQ164 | 0.00125 AU (187,000 km; 116,000 mi) | 0.49 | 2–7 | 29.9 [3] | 0.27 |
2016-01-11 | 2016 AH164 | 0.000632 AU (94,500 km; 58,700 mi) | 0.25 | 3–7 | 29.7 [5] | 0.069 |
2016-02-07 | 2016 CG18 | 0.00141 AU (211,000 km; 131,000 mi) | 0.55 | 3–16 | 28.5 [11] | 0.39 |
2016-02-10 | 2016 CW264 | 0.00195 AU (292,000 km; 181,000 mi) | 0.76 | 2–7 | 29.8 [13] | 0.56 |
2016-02-13 | 2016 CM194 | 0.00204 AU (305,000 km; 190,000 mi) | 0.79 | 7–21 | 27.5 [15] | 0.20 |
2016-02-26 | 2016 DY30 | 0.00189 AU (283,000 km; 176,000 mi) | 0.74 | 2–5 | 30.5 [19] | 0.037 |
2016-02-29 | 2016 DA31 | 0.00127 AU (190,000 km; 118,000 mi) | 0.49 | 2–7 | 29.9 [23] | 0.52 |
2016-03-03 | 2016 EK1 | 0.00100 AU (150,000 km; 93,000 mi) | 0.39 | 2–9 | 29.1 [25] | 0.53 |
2016-03-04 | 2016 EL1 | 0.00158 AU (236,000 km; 147,000 mi) | 0.61 | 5–20 | 27.8 [27] | 0.60 |
2016-03-05 | 2016 EG1 | 0.00256 AU (383,000 km; 238,000 mi) | 0.998 | 3–10 | 29.1 [112] | 1.14 |
2016-03-08 | 2016 EV28 | 0.00116 AU (174,000 km; 108,000 mi) | 0.45 | 4–10 | 28.5 [29] | 0.40 |
2016-03-09 | 2016 EN157 | 0.00228 AU (341,000 km; 212,000 mi) | 0.89 | 5–9 | 28.0 [31] | 0.84 |
2016-03-10 | 2016 EF195 | 0.00160 AU (239,000 km; 149,000 mi) | 0.62 | 16–31 | 25.5 [33] | 0.082 |
2016-03-14 | 2016 FC1 | 0.00131 AU (196,000 km; 122,000 mi) | 0.51 | 4–8 | 29.1 [35] | 0.44 |
2016-03-21 | 2016 FN56 | 0.00256 AU (383,000 km; 238,000 mi) | 0.995 [note2 2] | 35–86 | 24.2 [37] | 0.9995 |
2016-03-24 | 2016 FZ13 | 0.000942 AU (140,900 km; 87,600 mi) | 0.37 | 4–10 | 28.3 [39] | 0.98 |
2016-03-26 | 2016 FU6 | 0.00213 AU (319,000 km; 198,000 mi) | 0.83 | 4–9 | 28.9 [41] | 0.47 |
2016-03-28 | 2016 FE15 | 0.00124 AU (186,000 km; 115,000 mi) | 0.48 | 4–12 | 28.8 [45] | 0.70 |
2016-04-03 | 2016 FB13 | 0.00232 AU (347,000 km; 216,000 mi) | 0.90 | 10–31 | 26.7 [113] | 1.23 |
2016-04-04 | 2016 GN134 | 0.00220 AU (329,000 km; 205,000 mi) | 0.86 | 1–5 | 30.3 [50] | 0.19 |
2016-04-11 | 2016 FV13 | 0.00232 AU (347,000 km; 216,000 mi) | 0.90 | 13–43 | 26.0 [114] | 1.81 |
2016-05-06 | 2016 JS5 | 0.00160 AU (239,000 km; 149,000 mi) | 0.62 | 1–5 | 30.6 [57] | 0.53 |
2016-06-04 | 2016 LR51 | 0.00215 AU (322,000 km; 200,000 mi) | 0.84 | 7–24 | 27.4 [59] | 0.91 |
2016-06-09 | 2016 LP10 | 0.00204 AU (305,000 km; 190,000 mi) | 0.80 | 2–8 | 29.5 [63] | 0.20 |
2016-09-02 | 2016 RS1 | 0.00242 AU (362,000 km; 225,000 mi) | 0.94 | 3–11 | 29.1 [74] | 0.50 |
2016-09-07 | 2016 RK40 | 0.00128 AU (191,000 km; 119,000 mi) | 0.50 | 5–28 | 27.4 [115] | 1.35 |
2016-09-08 | 2016 RB1 | 0.00192 AU (287,000 km; 178,000 mi) | 0.75 | 6–18 | 27.8 [76] | 0.11 |
2016-09-10 | 2016 SF1 | 0.00156 AU (233,000 km; 145,000 mi) | 0.61 | 24–80 | 24.6 [116] | 1.32 |
2016-09-10 | 2016 RE34 | 0.00217 AU (325,000 km; 202,000 mi) | 0.84 | 5–15 | 28.3 [117] | 1.19 |
2016-10-03 | 2016 TH | 0.000908 AU (135,800 km; 84,400 mi) | 0.35 | 3–9 | 29.4 [88] | 0.33 |
2016-10-07 | 2016 TG94 | 0.00179 AU (268,000 km; 166,000 mi) | 0.70 | 3–8 | 29.7 [90] | 0.56 |
2016-10-10 | 2016 TS54 | 0.00210 AU (314,000 km; 195,000 mi) | 0.82 | 6–18 | 27.9 [92] | 0.20 |
2016-10-18 | 2016 UD | 0.00107 AU (160,000 km; 99,000 mi) | 0.42 | 10–33 | 26.6 [96] | 0.19 |
2016-11-02 | 2016 VA | 0.00229 AU (343,000 km; 213,000 mi) | 0.89 | 6–27 | 27.3 [98] | 0.24 |
2016-11-05 | XV88D4F | 0.00251 AU (375,000 km; 233,000 mi) | 0.98 | 2–7 | 30.0 | 0.095 |
2016-11-08 | 2016 VB1 | 0.00232 AU (347,000 km; 216,000 mi) | 0.90 | 4–15 | 28.4 [100] | 0.70 |
2016-11-10 | 2016 VF18 | 0.00220 AU (329,000 km; 205,000 mi) | 0.85 | 2–8 | 29.9 [102] | 0.18 |
2016-11-17 | 2016 WY | 0.00242 AU (362,000 km; 225,000 mi) | 0.94 | 3–10 | 29.3 [118] | 1.73 |
2016-11-17 | 2016 WT | 0.00229 AU (343,000 km; 213,000 mi) | 0.89 | 2–8 | 29.7 [104] | 0.50 |
2016-11-25 | 2016 WW2 | 0.000997 AU (149,100 km; 92,700 mi) | 0.39 | 3–11 | 29.0 [108] | 0.35 |
2016-11-27 | 2016 WR55 | 0.00255 AU (381,000 km; 237,000 mi) | 0.991 | 5–15 | 28.3 [119] | 1.13 |
2016-11-30 | 2016 XL23 | 0.00169 AU (253,000 km; 157,000 mi) | 0.66 | 3–10 | 29.3 [110] | 0.23 |
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.
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.
(480808) 1994 XL1 is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Aten group, approximately 200 meters (700 feet) in diameter. It was discovered on 6 December 1994, by Scottish–Australian astronomer Robert McNaught at Siding Spring Observatory in Australia. It was one of the first asteroids discovered to have a semi-major axis less than Venus.
2007 VK184 is a sub-kilometer asteroid, classified as a near-Earth object of the Apollo group, and estimated to be approximately 130 meters (430 ft) in diameter. It was listed on the Sentry Risk Table with a Torino Scale rating of 1 for a potential impactor in June 2048. It was removed from the Sentry Risk Table on 28 March 2014.
1994 WR12 is an asteroid and near-Earth object approximately 130 meters (430 feet) in diameter. As a member of the Aten group almost all of its orbit is closer to the Sun than Earth is. On 24 November 1994 it passed about 374100 km from the Moon. First imaged at Kitami Observatory on 26 November 1994, it was discovered two nights later by American astronomer Carolyn S. Shoemaker at Palomar Observatory on 28 November 1994. The asteroid then went unobserved from 1994 until it was recovered by Mauna Kea in March 2016. It was removed from the Sentry Risk Table on 2 April 2016.
2010 GA6 is a micro-asteroid on an eccentric orbit, classified as a near-Earth object of the Apollo group. It was first observed on 5 April 2010, by astronomers of the Catalina Sky Survey at Mount Lemmon Observatory, Arizona, United States, four days before a close approach to Earth at 1.1 lunar distances on 9 April 2010. It has not been observed since.
(511002) 2013 MZ5, provisional designation 2013 MZ5, is a sub-kilometer asteroid, classified as a near-Earth object of the Amor group, estimated to measure approximately 300 meters (1,000 feet) in diameter. It was discovered on 18 June 2013, by astronomers with the Pan-STARRS survey at Haleakala Observatory on the island of Maui, Hawaii, in the United States. It was the 10,000th near-Earth object ever discovered.
2009 RR micro-asteroid, classified as near-Earth object of the Apollo group. It was discovered on 11 September 2009 by the Catalina Sky Survey at an apparent magnitude of 19.5 using a 0.68-meter (27 in) Schmidt–Cassegrain telescope. 2009 RR was the only asteroid discovered before 2014 that was predicted to potentially pass inside the orbit of the Moon during 2014. The asteroid has an estimated diameter of 26 meters (85 ft) and is listed on the Sentry Risk Table. It is not large enough to qualify as a potentially hazardous object.
2014 AF5 (also written 2014 AF5) is an Apollo near-Earth asteroid roughly 5–10 meters in diameter that passed less than 1 lunar distance from Earth on 1 January 2014.
2014 HQ124 is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Aten group, approximately 400 meters (1,300 feet) in diameter. It passed 3.25 lunar distances (LD) from Earth on 8 June 2014. It was discovered on 23 April 2014 by NEOWISE. It is estimated that an impact event would have had the energy equivalent of 2,000 megatons of TNT and would have created a 5 km (3 mi) impact crater. The news media misleadingly nicknamed it The Beast. 2014 HQ124 previously passed this close to Earth in 1952 and will not again until at least 2307. Radar imaging suggests it may be a contact binary.
2014 XL7 is a near-Earth object and Apollo asteroid, approximately 230 meters (750 feet) in diameter. It was the most dangerous potentially hazardous asteroid on Sentry Risk Table upon its discovery by the Mount Lemmon Survey in December 2014. At the time, the asteroid had a cumulative 1 in 83000 chance of impacting Earth on 4–5 June between the years 2048 and 2084. After the object's observation arc had been extended to 35 days, it was removed from the Sentry Risk Table on 15 January 2015. Since then the asteroid's orbit has been secured. Although it has an Earth minimum orbit intersection distance of less than one lunar distance, there are no projected close encounters with Earth in the foreseeable future, with its closest passage to occur in May 2046, still millions of kilometers away.
2015 BP513 (also written 2015 BP513) is an Apollo near-Earth asteroid roughly 12–27 meters in diameter that passed less than 1 lunar distance from Earth on 18 January 2015.
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.
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.
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.
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.
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.