Asteroids 2019 YS and YB flew past Earth at 0.17 and 0.43 LD, respectively

asteroids-2019-ys-and-2019-yb

Two newly discovered asteroids designated 2019 YS and 2019 YB flew past Earth within 1 lunar distance on December 18, 2019. Since the start of the year, our sky surveys have discovered a total of 75 <1LD asteroids.

2019 YS flew past us at a distance of 0.17 LD / 0.00044 AU (65 823 km / 40 900 miles) at 15:12 UTC. It was first observed at Palomar Mountain–ZTF on December 19, one day after it made a close approach to our planet at a speed (relative to the Earth) of 7.17 km/s.

It belongs to the Apollo group of asteroids and has an estimated diameter between 1.3 and 3 m (4.6 – 9.8 feet).

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

Reference

Asteroid 2019 YS at Minor Planet Center; at CNEOS

Apollo-class asteroid 2019 YB was first observed at Mt. Lemmon Survey, Arizona on December 17, one day before it made a close approach to our planet.

Its estimated diameter is between 3.1 and 7 m (10.1 – 22.9 feet).

The asteroid flew past us at 00:12 UTC at a distance of 0.44 LD / 0.00113 AU (169 045 km / 105 040 miles)

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

Reference

Asteroid 2019 YB at Minor Planet Center; at CNEOS

 

Asteroids detected within 1 lunar distence in 2019 (valid December 26):

NEO DATE / TIME UTC DISTANCE LD | AU  Diameter (m)
2019 YU2 December 23 @ 19:28 ± < 00:01 0.26 | 0.00066 8.9 – 20
2019 YS December 18 @ 15:12 ± < 00:01 0.17 | 0.00044 1.3 – 3
2019 YB December 18 @ 00:12 ± 00:03  0.44 | 0.00113 3.1 – 7
2019 WJ4 November 30 @ 20:05 ± < 00:01 0.85 | 0.00219 5.5 – 12
2019 WG2 November 23 @ 08:44 ± < 00:01 0.47 | 0.00121 26 – 59
2019 WV1 November 19 @ 23:45 ± 03:13 0.72 | ​0.00186 6.3 – 14
2019 WH November 19 @ 08:01 ± < 00:01 0.22 | ​0.00057 16 – 36
2019 VF5 November 9 @ 23:16 ± < 00:01 0.49 | 0.00127 8.3 – 19
2019 VB5 November 9 @ 17:29 ± < 00:01 0.38 | 0.00097 1.2 – 2.7
2019 VS4 November 6 @ 16:28 ± < 00:01 0.36 | 0.00093 9.3 – 21
2019 VR November 4 @ 10:35 ± < 00:01 0.35 | 0.00091 6.5 – 14
2019 VD November 4 @ 09:55 ± 00:01 0.45 | 0.00116 8.7 – 19
2019 VA November 2 @ 17:41 ± 00:12  0.28 | 0.00072 5.6 – 12
2019 UG11 November 1 @ 20:42 ± 00:02 0.55 | 0.00140 13 – 29
2019 UN13 October 31 @ 14:45 ± < 00:01 0.03 | 8.43e-5 1 – 2.2
2019 UB8 October 29 @ 06:30 ± 00:03 0.50 | 0.00127 4 – 8.9
2019 UD10 October 27 @ 10:08 ± 00:02 0.44 | 0.00112 6.3 – 14
2019 UX12 October 26 @ 03:08 ± 00:04 0.99 | 0.00255 4.9 – 11
2019 UO8 October 25 @ 13:30 ± 00:01 0.41 | 0.00105 3.1 – 6.9
2019 UN8 October 23 @ 16:41 ± 00:17 0.93 | 0.00235  3.1 – 6.9
2019 UL3 October 19 @ 22:23 ± 00:08 0.77 | 0.00199 6 – 13
2019 UG October 18 @ 09:23 ± < 00:01 0.84 | 0.00215 6.8 – 15
2019 UU1 October 18 @ 06:23 ± < 00:01 0.59 | 0.00150 2.1 – 5.1
2019 TN5 October 5 @ 22:38 ± < 00:01 0.32 | 0.00083 5.5 – 12
2019 SP3 October 3 @ 06:36 ± 00:34 0.97 | 0.00248 13 – 30
2019 SM8 October 1 @ 13:56 ± < 00:01  0.41 | ​0.00106 3.8 – 8.6
2019 TD September 29 @ 18:50 ± 00:13 0.34 | ​0.00087 4.1 – 9.1
2019 TE September 28 @ 20:31 ± 01:31 0.93 | 0.00238 6.8 – 15
2019 SX8 September 28 @ 07:49 ± 00:38 0.99 | 0.00255 4.6 – 10
2019 SS3 September 22 @ 22:48 ± 00:21 0.73 | 0.00188 15 – 34
2019 SS2 September 21 @ 07:12 ± 00:02 0.30 | ​0.00077 2 – 4.4
2019 SD1 September 21 @ 06:46 ± < 00:01  0.73 | 0.00187 5.5 – 12
2019 SU2 September 21 @ 02:48 ± 00:05 0.19 | 0.00048 2.7 – 6.1
2019 SJ September 16 @ 18:55 ± 00:03 0.64 | 0.00163 8.6 – 19
2019 RC1 September 7 @ 10:48 ± 00:04 0.48 | ​0.00123 4.5 – 10
2019 RP1 September 5 @ 22:04 ± < 00:01  0.10 | ​0.00025 7.4 – 17
2019 RQ September 2 @ 16:45 ± < 00:01  0.29 | ​0.00074 2.1 – 4.6
2019 QQ3 August 26 @ 15:14 ± 00:01 0.25 | 0.00064 3.7 – 8.2
2019 QR8 August 26 @ 08:51 ± 01:08 0.80 | 0.00207 6.6 – 15
2019 QD August 22 @ 01:28 ± < 00:08  0.78 | 0.00200 4.7 – 11
2019 QH2 August 20 @ 18:12 ± 00:08 0.13 | 0.00033 2.2 – 5
2019 QB1 August 20 @ 11:55 ± 00:08 0.32 | 0.00082 9.3 – 21
2019 ON3 July 29 @ 01:19 ±  00:14 0.56 | 0.00143 7.4 – 16
2019 OD3 July 28 @ 02:56 ± < 00:01 0.49 | 0.00126 11 – 25
2019 OK July 25 @ 01:22 ± < 00:04 0.19 | ​0.00048 57 – 130
2019 OD July 24 @ 13:31 ± 00:04 0.93 | ​0.00239 54 – 120
2019 NN3 July 10 @ 16:29 ± < 00:01 0.83 | 0.00214 35 – 77
2019 NF7 July 9 @ 12:07 ± < 00:01  0.98 | 0.00253 6.4 – 14
2019 MB4 July 9 @ 07:20 ± < 00:01 0.82 | 0.00211 17 – 38
2019 NK1 July 2 @ 09:48 ± 00:05 0.69 | 0.00177 2.9 – 6.5
2019 LW4 June 8 @ 17:04 ± < 00:01 0.65 | ​​0.00166 9.3 – 21
2019 LY4 June 6 @ 01:30 ± < 00:01 0.22 | ​​0.00056 7.3 – 16
2019 KT May 28 @ 03:48 ± < 00:01 0.85 | ​0.00217 13 – 29
2019 JH2 May 16 @ 00:06 ± < 00:01 0.19 | ​0.00048 3.1 – 7
2019 JY2 May 5 @ 17:12 ± < 00:01 0.38 | 0.00098 3.3 – 7.3
2019 JX1 May 2 @ 12:39 ± 00:02 0.47 | 0.00120 3.8 – 8.6
2019 JK April 30 @ 08:12 UTC ± 00:01 0.69 | 0.00178 7.1 – 16
2019 HE April 20 @ 21:12 ± < 00:01 0.58 | 0.00149 13 – 30
2019 GC6 April 18 @ 06:39 ± 00:29 0.57 | 0.00147 13 – 28
2019 GN20 April 12 @ 07:06 ± < 00:01 0.98 | 0.00253 14 – 31
2019 FP21 March 31 @ 19:00  ±  07:46 0.93 | 0.00238 3 – 6.6
2019 FV1 March 31 @ 05:27 ± < 00:01 0.87 | 0.00223 4.6 – 10
2019 FC1 March 28 @ 05:46 ± < 00:01 0.27 | 0.00069 20 – 45
2019 FQ March 23 @ 18:17 UTC ± < 00:01 0.86 | 0.00220 10 – 23
2019 EA2 March 22 @ 01:53 UTC ± 00:02 0.80 | 0.00205 18 – 40
2019 FA March 16 @ 01:14 UTC ± < 00:01 0.60 | 0.00154 4.9 – 11
2019 EN2 March 13 @ 23:38 UTC ± < 00:01 0.86 | 0.00221 8 – 18
2019 EH1 March 1 @ 17:38 UTC ± < 00:01 0.06 | 0.00016 2.5 – 5.7
2019 DF February 26 @ 21:21 UTC  ± 00:09 0.47 | 0.00120 3.0 – 6.7
2019 DG2 Febraury 26 @ 07:39 UTC ± 07:39 0.61 | 0.00158 5.4 – 12
2019 CN5 February 11 @ 07:23 UTC ± 00:03 0.31 | 0.00079 7.3 – 16
2019 BZ3 January 27 @ 23:29 ± < 00:01 0.13 | 0.00032  4.8 – 11
2019 BV1 January 24 @ 20:53 ± < 00:01 0.35 | 0.00090  4.8 – 11
2019 BO January 16 @ 01:13 ± 00:02 0.18 | 0.00046  6.3 – 14
2019 AE9 January 12 @ 11:09 ± < 00:01 0.26 | 0.00067  9.9 – 22
2019 AS5 January 8 @ 00:37 ± < 00:01 0.04 | 0.00010  0.92 – 2.1

Featured image credit: MPC

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