1999 AF4
| Discovery | |
|---|---|
| Discovered by | Undefined |
| Discovery site | Lincoln Laboratory ETS, New Mexico |
| Discovery date | 1999-01-06 |
| Designations | |
| MPC designation | 1999 AF4 |
| Orbital characteristics | |
| Uncertainty parameter 0 | |
| Observation arc | 8977 Days |
| Aphelion | 4.581 AU |
| Perihelion | 1.1183592 AU |
| 2.8497164 AU | |
| Eccentricity | 0.6075542 |
| 4.81 years | |
Average orbital speed | 17.62 km/s |
| 28.85156 Degrees | |
| 0.20488090 Degrees/Day | |
| Inclination | 12.66698 Degrees |
| 155.68159 Degrees | |
| Physical characteristics | |
Mean diameter | 715.38 meters |
Mean radius | 357.69 meters |
| 3.12 hours | |
1999 AF4 is a small Amor asteroid with a diameter of 715.38 meters, making it comparable in size to the Golden Gate Bridge in San Francisco, California. The orbit of 1999 AF4 approaches the Earth, making it a Near-Earth asteroid (NEA), but does not cross the orbit of Earth. However, computer simulations have shown that there are no imminent collisions with Earth, thus it is not a Potentially hazardous object (PHA). It completes a rotation every 3.12 hours.[1][2]
Orbital characteristics
It orbits at a distance of 2.8 AU with an eccentricity of 0.6 and an inclination of 12.6 degrees. The orbit of 1999 AF4 approaches Earth but does not cross its orbit. However, it is still a near earth asteroid.[3]
References
- ↑ "Eyes on Asteroids - NASA/JPL". Eyes on Asteroids - NASA/JPL. Retrieved 2025-06-12.
- ↑ "IAU Minor Planet Center". www.minorplanetcenter.net. Retrieved 2025-06-12.
- ↑ "IAU Minor Planet Center". www.minorplanetcenter.net. Retrieved 2025-06-12.
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