A newly discovered asteroid designated 2019 NN3 will flyby Earth at a distance of 0.83 LD / 0.00214 AU (320 139 km / 198 925 miles) on July 10, 2019. This is the largest known asteroid to flyby Earth within 1 lunar distance since the start of the year. It comes just one day after 2019 MB4 at 0.82 LD.
It was first observed at ATLAS-MLO, Mauna Loa observatory in Hawaii on July 7, 2019.
Its estimated diameter is between 35 and 77 m (114 - 252 feet) - the largest since the start of the year.
The same as 2019 MB4, this object belongs to the Amor group of asteroids - the orbital perihelion of these objects is close to, but greater than, the orbital aphelion of Earth, with most Amors crossing the orbit of Mars.
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
This is the 29th known asteroid and the largest to flyby Earth within 1 LD since the start of the year.
| NEO | DATE / TIME UTC | DISTANCE LD | AU | Diameter (m) | ||||
| 2019 NN3 | July 10 @ 16:29 ± < 00:01 | 0.83 | 0.00214 | 35 - 77 | ||||
| 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 | ||||
References
Asteroid 2019 NN3 at CNEOS; at Minor Planet Center
Featured image credit: CNEOS
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