Draft:523971 (1999 AJ39)

523971 (1999 AJ39)
Discovery
Discovered by	Spacewatch
Discovery site	Kitt Peak
Discovery date	1999-01-09
Orbital characteristics
	Epoch 2024-10-17.0
Observation arc	9472 Days
Aphelion	1.479 AU
Perihelion	0.8373613 AU
Semi-major axis	1.1582162 AU
Eccentricity	0.2770250
Orbital period (sidereal)	1.25 years
Average orbital speed	27.69 km/s
Mean anomaly	57.17950
Mean motion	0.79071430
Inclination	10.08831 Degrees
Argument of perihelion	1.65814 Degrees
Group	Apollo
Physical characteristics
Mean diameter	198.85 meters
Mean radius	99.425 meters
Absolute magnitude (H)	21.21

Submission declined on 6 February 2025 by KylieTastic (talk).

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Declined by KylieTastic 3 seconds ago. Last edited by KylieTastic 3 seconds ago. Reviewer: Inform author.

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Overview

523971 (1999 AJ39) is a very small asteroid whose orbit crosses that of Earth. NASA JPL has classified 523971 (1999 AJ39) as a “Near Earth Asteroid” due to its close proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collisions. 523971 (1999 AJ39) size is very roughly in comparable in size to that of a football field.

References

^[1]

^[2]

[1] ttps://eyes.nasa.gov/apps/asteroids/#/523971_1999_aj39

[2] ttps://www.minorplanetcenter.net/db_search/show_object?object_id=523971

[1]

[2]