Asteroid close approaches in December 2021
128 asteroids passed within 0.05 AU of Earth in December 2021 - that is about 7.5 million km, or 19.5 lunar distances (LD). Click any name for full details.
AsteroidDate (UTC)DistanceSpeedEst. size
2021 WP2 01 Dec, 06:15 3.05 LD 7.3 km/s 11-26 m 2021 WC4 01 Dec, 09:20 3.21 LD 14.3 km/s 6-13 m 2021 WR4 01 Dec, 13:06 1.12 LD 4.6 km/s 2-5 m 2021 WR 01 Dec, 16:40 6.74 LD 8.8 km/s 22-49 m 2021 XK3 01 Dec, 17:45 3.82 LD 11.2 km/s 10-21 m 2021 WF3 01 Dec, 18:36 0.37 LD 11.7 km/s 3-8 m 2021 WE5 01 Dec, 19:46 14.56 LD 7.5 km/s 9-20 m 2021 XL 01 Dec, 22:44 0.53 LD 10.4 km/s 5-10 m 2021 XO2 02 Dec, 02:19 4.73 LD 14.3 km/s 22-49 m 2021 WK4 02 Dec, 02:34 4.56 LD 10.1 km/s 8-17 m 2021 WF2 02 Dec, 06:02 11.66 LD 12.6 km/s 26-58 m 2021 WC3 02 Dec, 09:02 1.35 LD 12.8 km/s 5-11 m 2021 XN1 02 Dec, 14:42 8.79 LD 9.3 km/s 12-27 m 2021 YE 02 Dec, 19:37 4.24 LD 6.4 km/s 17-39 m 2021 WN4 02 Dec, 20:30 12.33 LD 8 km/s 27-60 m 2021 XK4 02 Dec, 22:00 6.61 LD 11.5 km/s 14-31 m 2021 XL3 02 Dec, 22:02 2.77 LD 8.1 km/s 16-36 m 2021 WN2 02 Dec, 23:26 5.72 LD 8.5 km/s 12-27 m 2021 XQ3 03 Dec, 07:45 17.11 LD 20.2 km/s 30-68 m 2021 XP2 03 Dec, 10:10 2.7 LD 7.5 km/s 21-46 m 2021 XR5 03 Dec, 11:45 10.24 LD 9.3 km/s 8-18 m 2021 XN3 03 Dec, 13:05 8.27 LD 12.7 km/s 54-121 m 2023 VH6 03 Dec, 17:15 6.11 LD 6.5 km/s 20-45 m 2021 WZ1 03 Dec, 18:09 1.97 LD 13 km/s 12-27 m 2021 XH3 03 Dec, 21:41 10.99 LD 4.4 km/s 26-58 m 2021 XM2 03 Dec, 23:44 7.41 LD 20.6 km/s 17-37 m 2021 XG3 04 Dec, 06:38 14.53 LD 7.8 km/s 15-34 m 2021 XA1 04 Dec, 08:37 13.83 LD 8.1 km/s 11-24 m 2021 XG2 04 Dec, 12:14 17.92 LD 12.9 km/s 109-243 m 2021 XF1 04 Dec, 15:28 0.8 LD 7.8 km/s 3-7 m 2021 XV3 04 Dec, 16:45 16.16 LD 7.3 km/s 16-36 m 2024 JQ1 04 Dec, 19:16 15.61 LD 2.6 km/s 10-23 m 2021 UP4 04 Dec, 19:46 13.9 LD 8.3 km/s 39-88 m 2021 XC2 05 Dec, 04:54 0.82 LD 9.5 km/s 3-7 m 2021 WZ2 05 Dec, 08:31 8.41 LD 13.5 km/s 16-35 m 2021 XC4 05 Dec, 11:43 2.39 LD 16.1 km/s 15-33 m 2021 XA4 05 Dec, 12:41 4.37 LD 15.4 km/s 13-29 m 2021 XF 05 Dec, 13:36 2.34 LD 8.2 km/s 6-13 m 2021 XY3 05 Dec, 14:24 5.17 LD 16.6 km/s 12-27 m 2021 XU 05 Dec, 15:22 16.52 LD 17.8 km/s 23-52 m 2021 XB5 05 Dec, 15:49 2.45 LD 13.5 km/s 22-50 m 2021 XC5 05 Dec, 18:48 7.36 LD 8.6 km/s 10-23 m 2021 XD5 05 Dec, 19:29 4.72 LD 15.6 km/s 16-36 m 2021 WA5 05 Dec, 20:55 8.66 LD 5.8 km/s 9-21 m 2021 VX7 06 Dec, 02:24 14.74 LD 6.1 km/s 31-69 m 2021 WE1 06 Dec, 05:45 5.55 LD 9 km/s 15-33 m 2021 WM2 06 Dec, 11:54 8.2 LD 12.3 km/s 17-38 m 2021 XT1 06 Dec, 12:05 8 LD 5.3 km/s 5-11 m 2021 WL2 06 Dec, 12:18 6.98 LD 7.5 km/s 10-23 m 2021 XE 06 Dec, 18:10 4 LD 3.1 km/s 5-10 m 2021 XA3 07 Dec, 01:01 14.56 LD 8.2 km/s 14-30 m 2021 XQ4 07 Dec, 10:15 3.16 LD 18.2 km/s 12-26 m 2021 XN2 07 Dec, 14:54 2.33 LD 7.4 km/s 9-20 m 2021 XB6 07 Dec, 18:20 10.2 LD 14.6 km/s 41-92 m 2021 XY4 07 Dec, 21:50 7.6 LD 16.8 km/s 49-110 m 2021 XT3 07 Dec, 23:18 7.61 LD 7 km/s 9-19 m 2021 XC 08 Dec, 21:12 6.48 LD 6.9 km/s 15-33 m 2021 WT4 08 Dec, 21:59 10.8 LD 6.4 km/s 12-27 m 2021 WA3 09 Dec, 01:19 17.13 LD 7 km/s 12-27 m 2021 WW3 09 Dec, 14:59 5.54 LD 7.6 km/s 11-24 m 2021 XZ5 09 Dec, 20:33 0.83 LD 7.9 km/s 6-13 m 2021 XX2 09 Dec, 21:38 1.98 LD 6.3 km/s 5-12 m 2021 XU5 09 Dec, 21:48 0.63 LD 19.3 km/s 4-8 m 2021 XM3 10 Dec, 12:01 6.86 LD 12.6 km/s 50-112 m 2021 XJ4 10 Dec, 12:48 3.73 LD 21 km/s 9-20 m 2021 XW5 10 Dec, 13:57 1.34 LD 9.5 km/s 9-20 m 2021 XT4 10 Dec, 15:47 4.29 LD 8.3 km/s 6-12 m 2021 XZ2 10 Dec, 17:02 8.25 LD 18.8 km/s 16-35 m 2021 XV4 10 Dec, 18:50 0.47 LD 20.1 km/s 5-11 m 2021 WV1 11 Dec, 01:40 1.5 LD 3 km/s 5-12 m 2021 XD6 11 Dec, 03:23 1.08 LD 5.1 km/s 5-12 m 2021 YA 11 Dec, 04:44 8.32 LD 11.6 km/s 39-87 m 2021 XQ2 11 Dec, 11:07 10.01 LD 16.4 km/s 22-49 m 2021 XG 11 Dec, 13:22 7.67 LD 4.8 km/s 7-15 m 4660 11 Dec, 13:51 10.23 LD 6.6 km/s 473-1,057 m 2021 XE6 11 Dec, 14:29 6.61 LD 8.3 km/s 38-85 m 2021 XX4 11 Dec, 15:11 0.98 LD 13.5 km/s 5-11 m 2021 XA6 11 Dec, 18:48 1.27 LD 5.7 km/s 29-64 m 2021 XA11 11 Dec, 18:55 0.24 LD 12 km/s 6-13 m 2021 XD2 11 Dec, 19:02 3.52 LD 6.9 km/s 9-21 m 2021 WJ3 11 Dec, 23:12 9.88 LD 5.5 km/s 16-36 m 2021 WQ1 12 Dec, 17:34 7.78 LD 8.8 km/s 20-44 m 2021 XF5 12 Dec, 17:39 2.72 LD 7 km/s 8-17 m 2021 XE3 12 Dec, 19:56 2.09 LD 6.9 km/s 10-21 m 2024 VM1 13 Dec, 01:32 13.44 LD 7.8 km/s 9-20 m 2021 WZ5 13 Dec, 05:11 4.56 LD 1.9 km/s 4-9 m 2021 YH 13 Dec, 09:48 1.86 LD 9.1 km/s 10-23 m 2021 VW27 13 Dec, 12:14 18.64 LD 8.4 km/s 31-68 m 2019 XQ1 13 Dec, 13:51 14.06 LD 9.1 km/s 23-51 m 2021 WW2 13 Dec, 14:12 14.2 LD 10.8 km/s 21-47 m 2021 XS4 14 Dec, 03:54 12.27 LD 9.3 km/s 17-38 m 2021 XR4 14 Dec, 10:07 3.69 LD 10.9 km/s 12-27 m 2021 VT6 14 Dec, 10:39 7.71 LD 6.9 km/s 37-82 m 2021 WZ4 14 Dec, 14:27 4.97 LD 14.1 km/s 30-66 m 2021 XG4 15 Dec, 01:42 16.65 LD 20 km/s 28-63 m 2004 YC 15 Dec, 20:01 18.37 LD 8.1 km/s 20-45 m 2021 YC 16 Dec, 04:25 3.7 LD 4.7 km/s 18-41 m 2021 XC6 16 Dec, 08:10 0.54 LD 10.4 km/s 6-13 m 2021 XQ5 16 Dec, 11:40 4.46 LD 10.5 km/s 8-17 m 2021 XN6 17 Dec, 06:43 10.14 LD 9.9 km/s 10-23 m 163899 17 Dec, 17:26 14.12 LD 5.6 km/s 818-1,828 m 2025 YN 17 Dec, 21:13 18.21 LD 13.1 km/s 16-35 m 2021 YD 19 Dec, 15:38 10.05 LD 11 km/s 37-83 m 2021 XV5 19 Dec, 21:15 7.85 LD 7.1 km/s 20-45 m 2021 XK6 20 Dec, 04:35 8.68 LD 12.3 km/s 75-167 m 2016 YY10 21 Dec, 07:31 11.21 LD 9.2 km/s 18-39 m 2017 XQ60 21 Dec, 08:58 13.69 LD 15.7 km/s 33-75 m 2022 YG 22 Dec, 13:59 13.23 LD 5 km/s 12-27 m 2021 YW 22 Dec, 19:44 2.61 LD 24.8 km/s 26-57 m 2021 YB 23 Dec, 00:19 1.44 LD 5.8 km/s 8-19 m 2024 YM 23 Dec, 13:00 8.62 LD 10.7 km/s 9-20 m 2022 AR3 23 Dec, 18:42 8.44 LD 12.1 km/s 22-50 m 2016 TR54 24 Dec, 06:30 16.83 LD 15.5 km/s 102-229 m 2021 YR 26 Dec, 22:37 2.82 LD 14.1 km/s 18-40 m 2022 AH 27 Dec, 07:53 10.34 LD 12.7 km/s 76-171 m 2018 AH 27 Dec, 13:09 12.19 LD 12.7 km/s 77-173 m 2022 AE 28 Dec, 06:15 6.04 LD 18.5 km/s 32-72 m 2021 YL 28 Dec, 11:39 12.83 LD 8 km/s 22-48 m 2022 AS4 28 Dec, 13:54 5.06 LD 11 km/s 14-31 m 2022 AC 28 Dec, 19:30 2.87 LD 9.4 km/s 23-51 m 2022 AQ3 28 Dec, 20:06 12.54 LD 5.7 km/s 13-30 m 2022 AR1 29 Dec, 01:28 13.78 LD 18 km/s 28-63 m 2022 AK2 29 Dec, 13:32 4.24 LD 12.6 km/s 15-34 m 2022 AD1 29 Dec, 18:38 17.51 LD 8.2 km/s 19-43 m 2021 YV 29 Dec, 21:05 18.72 LD 4.5 km/s 13-30 m 2022 AM1 30 Dec, 02:59 7.69 LD 11 km/s 11-24 m 2022 AX 30 Dec, 08:32 12.59 LD 7.4 km/s 12-26 m 2022 AV 31 Dec, 16:40 4.22 LD 6.5 km/s 7-16 m 
