2022 WJ1
2022 WJ1, formerly designated C8FF042, was a small, harmless ≈1-metre near-Earth asteroid or meteoroid that impacted Earth's atmosphere on 19 November 2022 at 08:27 UT in Southern Ontario, Canada, above the Golden Horseshoe region, southwest of Toronto. Meteorites were detected by weather radar during dark flight.
Orbit before impact | |
| Discovery | |
|---|---|
| Discovered by | David Rankin (Mt. Lemmon Srvy) |
| Discovery site | Mt. Lemmon Obs. |
| Discovery date | 19 November 2022 |
| Designations | |
MPC designation | 2022 WJ1 |
Alternative designations | C8FF042 |
Minor planet category | NEO · Apollo |
| Orbital characteristics | |
| Epoch 9 August 2022 (JD 2459800.5) | |
| Uncertainty parameter 6 | |
| Observation arc | 3.04 hours |
| Aphelion | 2.817 AU |
| Perihelion | 0.928 AU |
Semi-major axis | 1.872 AU |
| Eccentricity | 0.5043 |
Orbital period (sidereal) | 2.56 yr (935.9 days) |
Mean anomaly | 310.198° |
Mean motion | 0° 23m 4.778s / day |
| Inclination | 2.582° |
Longitude of ascending node | 56.748° |
| May 2020 (last perihelion) 16 December 2022 (would have been) | |
| 35.034° | |
| Earth MOID | 0.000256 AU (38,300 km; 0.100 LD) |
| Jupiter MOID | 2.418 AU |
| Physical characteristics | |
Mean diameter | <1 m |
| ≈31 @ 0.2 AU ≈15 (before entering Earth's shadow) | |
| 33.554±0.363 | |
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