Asteroid 2019 HE flew past Earth at 0.58 LD

Asteroid 2019 HE flew past Earth at 0.58 LD

A newly discovered asteroid designated 2019 HE flew past Earth at a distance of 0.58 LD / 0.00149 AU (222 900 km / 138 540 miles) on April 20, 2019. This is the 18th known asteroid to flyby Earth within 1 lunar distance since the start of the year.

This object belongs to the Apollo group of asteroids. It was first observed at Palomar Mountain, ZTF on April 21, one day after it made its close approach to our planet.

It has an estimated diameter between 13 and 30 m (42 - 98 feet) and it flew past Earth at a speed (relative to the Earth) of 12.17 km/s.

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

This is the 18th known asteroid to flyby Earth within 1 lunar distance since the start of the year and 3rd this month.

 

NEODATE / TIME UTCDISTANCE LD | AU Diameter
2019 HEApril 20 @ 21:12 ± < 00:010.58 | 0.0014913 - 30 m
2019 GC6April 18 @ 06:39 ± 00:290.57 | 0.0014713 - 28 m
2019 GN20April 12 @ 07:06 ± < 00:010.98 | 0.0025314 - 31 m
2019 FV1March 31 @ 05:27 ± < 00:010.87 | 0.002234.6 - 10 m
2019 FC1March 28 @ 05:46 ± < 00:010.27 | 0.00069 20 - 45 m
2019 FQMarch 23 @ 18:17 UTC ± < 00:010.86 | 0.00220 10 - 23 m
2019 EA2March 22 @ 01:53 UTC ± 00:020.80 | 0.0020518 - 40 m
2019 FAMarch 16 @ 01:14 UTC ± < 00:010.60 | 0.001544.9 - 11 m
2019 EN2March 13 @ 23:38 UTC ± < 00:010.86 | 0.002218 - 18 m
2019 EH1March 1 @ 17:38 UTC ± < 00:010.06 | 0.000162.5 - 5.7 m
2019 DFFebruary 26 @ 21:21 UTC  ± 00:090.47 | 0.001203.0 - 6.7 m
2019 DG2Febraury 26 @ 07:39 UTC ± 07:390.61 | 0.001585.4 - 12 m
2019 CN5February 11 @ 07:23 UTC ± 00:030.31 | 0.000797.3 - 16 m
2019 BZ3January 27 @ 23:29 ± < 00:010.13 | 0.00032 4.8 - 11 m
2019 BV1January 24 @ 20:53 ± < 00:010.35 | 0.00090 4.8 - 11 m
2019 BOJanuary 16 @ 01:13 ± 00:020.18 | 0.00046 6.3 - 14 m
2019 AE9January 12 @ 11:09 ± < 00:010.26 | 0.00067 9.9 - 22 m
2019 AS5January 8 @ 00:37 ± < 00:010.04 | 0.00010 0.92 - 2.1 m


References

2019 HE at Minor Planet Center; at CNEOS

Featured image: The green line indicates the object's apparent motion relative to the Earth, and the bright green marks are the object's location at approximately half hour intervals. The Moon's orbit is grey. The blue arrow points in the direction of Earth's motion and the yellow arrow points toward the Sun. Credit: Minor Planet Center

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