Asteroid (2020 FN3)
Closest pass on 2026-Oct-20 10:06 TDB (Julian Date: 2461333.920938949)
Key Facts
- On 2026-Oct-20 10:06, asteroid (2020 FN3) passed Earth at a nominal distance of 4,730,000 km (12.3 lunar distances).
- At closest approach, the object was traveling at 5.83 km/s relative to Earth.
- The object has an estimated size of 44.9 m, which is about 4 school buses.
- The miss distance was about 12 times the distance to the Moon.
- Hazard classification: 25 to 50 meters. Can produce a low-altitude airburst or surface crater capable of flattening forests over hundreds of square kilometers and devastating a metropolitan area, comparable to the 1908 Tunguska event.
Visual Scale Comparison
| Target | 45 m |
|---|---|
| Smaller | blue whale: 25 m |
| Larger | Boeing 747: 70.6 m |
Object size compared to known reference benchmarks.
Miss Distance Orbital Dial
Concentric orbital rings showing Earth, Moon orbit, and asteroid trajectory.
Astrometric & Orbital Parameters
| Designation | 2020 FN3 |
|---|---|
| Full Object Name | (2020 FN3) |
| Nominal Miss Distance | 4,730,000 km (12.3 lunar distances / 0.031638866360086 au) |
| 3-Sigma Minimum Distance | 4,732,913.914 km (12.312 LD) |
| Relative Velocity (v_rel) | 5.83233412357253 km/s (0.761 times the size of a ISS orbital velocity) |
| Velocity at Infinity (v_inf) | 5.8178768083644 km/s |
| Time Uncertainty (3-sigma) | < 00:01 |
| Absolute Magnitude (H) | 24.49 mag |
| Orbit Solution ID | 11 (NASA JPL Small-Body Database) |
| Inside Moon Orbit | No |
| Inside Geostationary Ring | No |
Cite this page
Permanent URL: https://whatnearlyhitus.com/approaches/2026-Oct-20/2020-fn3/ | Machine-readable twin: index.json
APA:
What Nearly Hit Us Project. (2026). Asteroid (2020 FN3) Close Approach on 2026-Oct-20 10:06. What Nearly Hit Us. Retrieved from https://whatnearlyhitus.com/approaches/2026-Oct-20/2020-fn3/MLA:
"Asteroid (2020 FN3) Close Approach on 2026-Oct-20 10:06." What Nearly Hit Us, What Nearly Hit Us Project, 2026-09-24, https://whatnearlyhitus.com/approaches/2026-Oct-20/2020-fn3/.BibTeX:
@misc{approach_2020FN3_202620,
title = {Asteroid (2020 FN3) Close Approach on 2026-Oct-20 10:06},
author = {{What Nearly Hit Us Project}},
year = {2026},
url = {https://whatnearlyhitus.com/approaches/2026-Oct-20/2020-fn3/},
note = {Primary upstream source: NASA/JPL CNEOS CAD API}
}