Asteroid 2019 MB4 to flyby Earth at 0.82 lunar distances on July 9

Asteroid 2019 MB4 to flyby Earth at 0.82 lunar distances on July 9

A newly discovered asteroid designated 2019 MB4 will flyby Earth at 0.82 LD / 0.00211 AU (315 651 km / 196 136 miles) at 07:20 UTC on July 9, 2019. This object is about the same size as Chelyabinsk asteroid of February 15, 2013. A larger asteroid, designated 2019 NN3, is expected to flyby us at 0.83 LD on July 10.

2019 MB4 belongs to the Amor group of asteroids. This group is named after the archetype object 1221 Amor. The orbital perihelion of these objects is close to, but greater than, the orbital aphelion of Earth (the objects do not cross Earth's orbit), with most Amors crossing the orbit of Mars. The Amor asteroid 433 Eros was the first asteroid to be orbited and landed upon by a robotic space probe (NEAR Shoemaker).

It was first observed at Pan-STARRS, Haleakala observatory in Hawaii on June 29 and its estimated diameter is between 17 and 38 m (55 - 124 feet).

Its closest approach to Earth is expected at 07:20 UTC on July 9 at a speed (relative to the Earth) of 7.17 km/s.

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

This is the 28th known asteroid to flyby Earth within 1 LD since the start of the year.

A  larger 2019 NN3 will flyby Earth on July 10. 2019 NN3 will be 29th known and the largest since the start of the year.

 

NEODATE / TIME UTCDISTANCE LD | AU Diameter (m)
2019 NN3July 10 @ 16:29 ± < 00:010.83 | 0.00214 35 - 77
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 | ​0.00217 13 - 29
2019 JH2May 16 @ 00:06 ± < 00:010.19 | ​0.00048 3.1 - 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 | 0.00238 3 - 6.6
2019 FV1March 31 @ 05:27 ± < 00:010.87 | 0.002234.6 - 10
2019 FC1March 28 @ 05:46 ± < 00:010.27 | 0.00069 20 - 45
2019 FQMarch 23 @ 18:17 UTC ± < 00:010.86 | 0.00220 10 - 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

 

The chart includes 2019 NN3

References

Asteroid 2019 MB4 at CNEOS; at Minor Planet Center

Featured image credit: CNEOS

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