Asteroid 2020 SW to flyby Earth at just 0.07 LD

Asteroid 2020 SW to flyby Earth at just 0.07 LD

A newly-discovered asteroid designated 2020 SW is expected to flyby Earth at just 0.07 LD / 0.00019 AU (28 423 km / 17 661 miles) at 11:18 UTC (± 06:18) on September 24, 2020.

  • This is the 66th known asteroid to flyby Earth within 1 lunar distance since the start of the year and the 7th so far this month.
  • It is also the 4th closest asteroid flyby so far this year and 24th closest on record.

Asteroid 2020 SW was first observed at Mt. Lemmon Survey, Arizona on September 18, 6 days before its close approach.

The object belongs to the Apollo group of asteroids and has an estimated diameter between 4.3 and 9.7 m (14.1 - 31.8 feet).

The flyby is expected to take place at 11:18 UTC (± 06:18) at a speed (relative to the Earth) of 7.7 km/s.

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Asteroid flybys within 1 lunar distance in 2020 (valid 08:14 UTC, September 19):

NEODATE / TIME UTCDISTANCE LD | AU Diameter (m)
2020 SWSeptember 24 @ 11:18 ± 06:180.07 | 0.000194.3 - 9.7
2020 RZ6September 17 @ 18:23 ± < 00:010.88 | 0.0022712 - 27
2020 RD4September 14 @ 20:33 ± < 00:010.28 | 0.000712.9 - 6.5
2020 RF3September 14 @ 06:49 ± 00:010.24 | 0.000635.3 - 12
2020 SPSeptember 13 @ 00:57 ± 00:020.86 | 0.002229.9 - 22
2020 RE5September 9 @ 16:50 ± 00:030.64 | 0.001644.1 - 9.2
2011 ES4September 1 @ 16:12 ± < 00:010.32 | 0.0008122 - 49
2020 QR5August 23 @ 04:20 ± < 00:01 0.83 | 0.002149.2 - 21
2020 QQ4August 22 @ 23:18 ± < 00:010.80 | 0.002064.6 - 10
2020 QN4August 21 @ 04:23 ± < 00:010.71 | 0.001825 - 11
2020 QY2August 20 @ 23:50 ± < 00:010.17 | 0.000441.6 - 3.6
2020 PY2August 20 @ 21:29 ± < 00:010.91 | 0.0023412 - 27
2020 QF2August 18 @ 01:41 ± < 00:010.55 | 0.001407.1 - 16
2020 QGAugust 16 @ 04:09 ± < 00:010.02 | 0.0000623*2.9 - 6.4
2020 PW2August 14 @ 04:25 ± < 00:010.73 | 0.001874.9 - 11
2020 QJ5August 12 @  ± < 00:010.77 | 0.0019712 - 26
2020 PX5August 11 @ 08:45 ± < 00:010.59 | 0.001533.2 - 7.2
2020 PAAugust 1 @ 01:56 ± < 00:010.15 | 0.000394.6 - 10
2020 OY4July 28 @ 05:32  ± < 00:010.11 | 0.000282.3 - 5.2
2020 NBJuly 5 @ 21:21 ± < 00:010.46 | 0.0011915 - 33
2020 ML2June 13 @ 04:45 ± < 00:010.93 | 0.002386.7 - 15
2020 LDJune 5 @ 08:25 ± 00:05 0.80 | 0.0020589 - 200
2020 KC5May 29 @ 20:46 ± < 00:010.97 | 0.002489.1 - 20
2020 KJ4May 28 @ 13:21 ± < 00:010.37 | ​0.000962.8 - 6.2
2020 KF5May 28 @ 12:47 ± < 00:080.64 | 0.001653.5 - 7.8
2020 JNMay 5 @ 03:22 ± < 00:010.65 | ​0.001679 - 20
2020 JJMay 4 @ 12:05 ± < 00:010.03 | 0.00008962.7 - 6
2020 JAMay 3 @ 20:01 ± < 00:010.62 | 0.001609.6 - 22
2020 JGApril 30 @ 19:38 ± < 00:020.56 | 0.0014318 - 41
2020 HS7April 28 @ 18:51 ± < 00:010.11 | 0.000294 - 8.9
2020 HP6April 27 @ 14:40 ± < 00:010.33 | 0.000846.7 - 15
2020 HT8April 26 @ 13:33 ± 00:010.38 | 0.000995.8 - 13
2020 HX3April 24 @ 19:38 ± < 00:010.66 | 0.0016911 - 24
2020 HU7April 22 @ 20:19 ± < 00:010.34 | 0.000873.1 - 7
2020 HF5April 22 @ 16:41 ± < 00:010.38 | 0.00098 12 - 27
2020 HM6April 22 @ 05:51 ± 00:050.42 | 0.0010913 - 28
2020 GH2April 15 @ 12:45 ± 00:500.93 | 0.0024013 - 30
2020 HOApril 15 @ 10:06 ± 00:01 0.75 | 0.001934.6 - 10
2020 GY1April 5 @ 07:37 ± < 00:010.21 | 0.0005413 - 28
2020 GHApril 3 @ 22:04 ± < 00:010.33 | 0.000844.1 - 9.2
2020 GO1April 1 @ 19:09 ± < 00:010.18 | 0.000467.9 - 18
2020 FB7March 31 @ 16:17 ± < 00:010.20 | 0.0005216 -36
2020 FJ4March 25 @ 13:42 ± < 00:010.67 | 0.001723.4 - 7.6
2020 FL2March 22 @ 20:32 ± < 00:010.38 | 0.0009915 - 33
2020 FG4March 19 @ 00:51 ± 00:010.49 | 0.0012610 - 23
2020 FDMarch 18 @ 04:05 ± < 00:010.67 | 0.001717.8 - 17
2020 FD2March 18 @ 20:17 ± 00:310.85 | 0.0021920 - 44
2020 DR4February 24 @ 20:30 ± 00:030.24 | 0.000623 - 6.8
2020 DWFebruary 18 @ 17:02 ± < 00:010.63 | 0.001612.3 - 5.1
2020 DA1February 18 @ 10:32 ± < 00:010.50 | 0.001293.1 - 6.8
2020 CQ2February 14 @ 02:19 ± < 00:010.39 | 0.000995 - 11
2020 CD3February 13 @ 16:20 ± < 00:010.12 | 0.000311.2 - 2.7
2020 DUFebruary 13 @ 13:22 ± 00:060.85 | 0.002174.9 - 11
2020 CQ1February 4 @ 11:16 ± 00:020.17 | 0.000434.6 - 10
2020 BT14February 3 @ 08:19 ± < 00:010.49 | 0.00126​7.9 - 18
2020 CAFebruary 2 @ 15:49 ± 00:020.57 | 0.00147​3.2 - 7.2
2020 CWFebruary 1 @ 12:50 ± < 00:01 0.04 | 0.000110.83 - 1.9
2020 CJJanuary 31 @ 19:03 ± < 00:01 0.92 | 0.0023611 - 24
2020 CZJanuary 31 @ 03:51 ± 00:480.82 | 0.002103.7 - 8.2
2020 BZ13January 29 @ 01:18 ± < 00:010.28 | 0.000712.9 - 6.5
2020 BA15January 28 @ 18:03 ± 00:020.98 | ​0.002518.9 - 20
2020 BA13January 27 @ 16:56 ± < 00:01 0.51 | ​0.001324.7 - 11
2020 BH6January 25 @ 05:11 ± < 00:010.18 | ​0.000475.2 - 12
2020 BB5January 22 @ 00:20 ± 00:200.69 | 0.001773.3 - 7.4
2020 BK3January 20 @ 20:51 ± 00:050.78 | 0.0020011 - 25
2020 AP1January 2 @ 15:33  ± 00:020.85 | 0.002183.2 - 7.2

*Closest asteroid flyby on record


Asteroids detected within 1 lunar distance in 2019:

NEODATE / TIME UTCDISTANCE LD | AU Diameter (m)
2019 YV4December 25 @ 21:41 ± 11:010.98 | 0.002519.3 - 21
2019 YU2December 23 @ 19:28 ± < 00:010.26 | 0.000668.9 - 20
2019 YSDecember 18 @ 15:12 ± < 00:010.17 | 0.000441.3 - 3
2019 YBDecember 18 @ 00:12 ± 00:03 0.44 | 0.001133.1 - 7
2019 WJ4November 30 @ 20:05 ± < 00:010.85 | 0.002195.5 - 12
2019 WG2November 23 @ 08:44 ± < 00:010.47 | 0.0012126 - 59
2019 WV1November 19 @ 23:45 ± 03:130.72 | ​0.001866.3 - 14
2019 WHNovember 19 @ 08:01 ± < 00:010.22 | ​0.0005716 - 36
2019 VF5November 9 @ 23:16 ± < 00:010.49 | 0.001278.3 - 19
2019 VB5November 9 @ 17:29 ± < 00:010.38 | 0.000971.2 - 2.7
2019 VS4November 6 @ 16:28 ± < 00:010.36 | 0.000939.3 - 21
2019 VRNovember 4 @ 10:35 ± < 00:010.35 | 0.000916.5 - 14
2019 VDNovember 4 @ 09:55 ± 00:010.45 | 0.001168.7 - 19
2019 VANovember 2 @ 17:41 ± 00:12 0.28 | 0.000725.6 - 12
2019 UG11November 1 @ 20:42 ± 00:020.55 | 0.0014013 - 29
2019 UN13October 31 @ 14:45 ± < 00:010.03 | 8.43e-51 - 2.2
2019 UB8October 29 @ 06:30 ± 00:030.50 | 0.001274 - 8.9
2019 UD10October 27 @ 10:08 ± 00:020.44 | 0.001126.3 - 14
2019 UX12October 26 @ 03:08 ± 00:040.99 | 0.002554.9 - 11
2019 UO8October 25 @ 13:30 ± 00:010.41 | 0.001053.1 - 6.9
2019 UN8October 23 @ 16:41 ± 00:170.93 | 0.00235 3.1 - 6.9
2019 UL3October 19 @ 22:23 ± 00:080.77 | 0.001996 - 13
2019 UGOctober 18 @ 09:23 ± < 00:010.84 | 0.002156.8 - 15
2019 UU1October 18 @ 06:23 ± < 00:010.59 | 0.001502.1 - 5.1
2019 TN5October 5 @ 22:38 ± < 00:010.32 | 0.000835.5 - 12
2019 SP3October 3 @ 06:36 ± 00:340.97 | 0.0024813 - 30
2019 SM8October 1 @ 13:56 ± < 00:01 0.41 | ​0.001063.8 - 8.6
2019 TDSeptember 29 @ 18:50 ± 00:130.34 | ​0.000874.1 - 9.1
2019 TESeptember 28 @ 20:31 ± 01:310.93 | 0.002386.8 - 15
2019 SX8September 28 @ 07:49 ± 00:380.99 | 0.002554.6 - 10
2019 SS3September 22 @ 22:48 ± 00:210.73 | 0.0018815 - 34
2019 SS2September 21 @ 07:12 ± 00:020.30 | ​0.000772 - 4.4
2019 SD1September 21 @ 06:46 ± < 00:01 0.73 | 0.001875.5 - 12
2019 SU2September 21 @ 02:48 ± 00:050.19 | 0.000482.7 - 6.1
2019 SJSeptember 16 @ 18:55 ± 00:030.64 | 0.001638.6 - 19
2019 RC1September 7 @ 10:48 ± 00:040.48 | ​0.001234.5 - 10
2019 RP1September 5 @ 22:04 ± < 00:01 0.10 | ​0.000257.4 - 17
2019 RQSeptember 2 @ 16:45 ± < 00:01 0.29 | ​0.000742.1 - 4.6
2019 QQ3August 26 @ 15:14 ± 00:010.25 | 0.000643.7 - 8.2
2019 QR8August 26 @ 08:51 ± 01:080.80 | 0.002076.6 - 15
2019 QDAugust 22 @ 01:28 ± < 00:08 0.78 | 0.002004.7 - 11
2019 QH2August 20 @ 18:12 ± 00:080.13 | 0.000332.2 - 5
2019 QB1August 20 @ 11:55 ± 00:080.32 | 0.000829.3 - 21
2019 ON3July 29 @ 01:19 ±  00:140.56 | 0.001437.4 - 16
2019 OD3July 28 @ 02:56 ± < 00:010.49 | 0.0012611 - 25
2019 OKJuly 25 @ 01:22 ± < 00:040.19 | ​0.0004857 - 130
2019 ODJuly 24 @ 13:31 ± 00:040.93 | ​0.0023954 - 120
2019 NN3July 10 @ 16:29 ± < 00:010.83 | 0.0021435 - 77
2019 NF7July 9 @ 12:07 ± < 00:01 0.98 | 0.002536.4 - 14
2019 MB4July 9 @ 07:20 ± < 00:010.82 | 0.0021117 - 38
2019 NK1July 2 @ 09:48 ± 00:050.69 | 0.001772.9 - 6.5
2019 LW4June 8 @ 17:04 ± < 00:010.65 | ​​0.001669.3 - 21
2019 LY4June 6 @ 01:30 ± < 00:010.22 | ​​0.000567.3 - 16
2019 KTMay 28 @ 03:48 ± < 00:010.85 | ​0.0021713 - 29
2019 JH2May 16 @ 00:06 ± < 00:010.19 | ​0.000483.1 - 7
2019 JY2May 5 @ 17:12 ± < 00:010.38 | 0.000983.3 - 7.3
2019 JX1May 2 @ 12:39 ± 00:020.47 | 0.001203.8 - 8.6
2019 JKApril 30 @ 08:12 UTC ± 00:010.69 | 0.001787.1 - 16
2019 HEApril 20 @ 21:12 ± < 00:010.58 | 0.0014913 - 30
2019 GC6April 18 @ 06:39 ± 00:290.57 | 0.0014713 - 28
2019 GN20April 12 @ 07:06 ± < 00:010.98 | 0.0025314 - 31
2019 FP21March 31 @ 19:00  ±  07:460.93 | 0.002383 - 6.6
2019 FV1March 31 @ 05:27 ± < 00:010.87 | 0.002234.6 - 10
2019 FC1March 28 @ 05:46 ± < 00:010.27 | 0.0006920 - 45
2019 FQMarch 23 @ 18:17 UTC ± < 00:010.86 | 0.0022010 - 23
2019 EA2March 22 @ 01:53 UTC ± 00:020.80 | 0.0020518 - 40
2019 FAMarch 16 @ 01:14 UTC ± < 00:010.60 | 0.001544.9 - 11
2019 EN2March 13 @ 23:38 UTC ± < 00:010.86 | 0.002218 - 18
2019 EH1March 1 @ 17:38 UTC ± < 00:010.06 | 0.000162.5 - 5.7
2019 DFFebruary 26 @ 21:21 UTC  ± 00:090.47 | 0.001203.0 - 6.7
2019 DG2Febraury 26 @ 07:39 UTC ± 07:390.61 | 0.001585.4 - 12
2019 CN5February 11 @ 07:23 UTC ± 00:030.31 | 0.000797.3 - 16
2019 BZ3January 27 @ 23:29 ± < 00:010.13 | 0.00032 4.8 - 11
2019 BV1January 24 @ 20:53 ± < 00:010.35 | 0.00090 4.8 - 11
2019 BOJanuary 16 @ 01:13 ± 00:020.18 | 0.00046 6.3 - 14
2019 AE9January 12 @ 11:09 ± < 00:010.26 | 0.00067 9.9 - 22
2019 AS5January 8 @ 00:37 ± < 00:010.04 | 0.00010 0.92 - 2.1

 

Reference

Asteroid 2020 SW at Minor Planet Center; at CNEOS

Featured image credit: MPC

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