2022 YO1
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| Discovery[1] | |
|---|---|
| Discovered by | Catalina Sky Survey |
| Discovery date | 17 December 2022 |
| Designations | |
| 2022 YO1 | |
| Orbital characteristics[3] | |
| Epoch 2025-Nov-21 (JD 2461000.5) | |
| Uncertainty parameter 6 | |
| Observation arc | 0.4 days[2] |
| Aphelion | 2.40 AU (Q) |
| Perihelion | 0.8027 AU (q) |
| 1.600 AU (a) | |
| Eccentricity | 0.4984 (e) |
| 2.024 years | |
| 143.50° (M) | |
| Inclination | 13.56° (i) |
| 85.48° (Ω) | |
| 2023-Jan-30[3] | |
| 63.48° (ω) | |
| Earth MOID | 0.00017 AU (25,000 km) |
| Jupiter MOID | 2.7 AU (400,000,000 km) |
| Physical characteristics | |
| Dimensions |
|
| 30[4] | |
2022 YO1 is a small and harmless near-Earth object that will pass within 0.014 AU (2.1 million km) of Earth around 17 December 2024.[3] At 17 December 2024 06:14 UT it has a 0.23% (1-in-430) chance of impacting Earth.[2] It is estimated to be 3-meters in diameter which would make an impact comparable to 2008 TC3. It has a very short observation arc of 0.4 days.[needs update] It was first imaged on 17 December 2022 07:07,[1] when it was 0.004 AU (600 thousand km) from Earth, and made its closest approach to Earth at a distance of 0.00018 AU (27,000 km) shortly after on the same day.[3]
At the time of the virtual impactor (17 December 2024 06:14) the asteroid is expected to be 0.0055 AU (820 thousand km) from Earth but has an uncertainty region of ±1.5 million km (0.01 AU).[5] The nominal approach to Earth is expected to occur about nine hours later at 17 December 2024 15:41 at a distance of 0.005 AU (750 thousand km).[3][needs update]
| Date | Impact probability |
JPL Horizons nominal geocentric distance (AU) |
NEODyS nominal geocentric distance (AU) |
MPC[6] nominal geocentric distance (AU) |
uncertainty region (3-sigma) |
|---|---|---|---|---|---|
| 2024-12-17 06:14 | 0.23% | 0.0055 AU (820 thousand km)[5] | 0.0051 AU (760 thousand km)[7] | 0.0056 AU (840 thousand km) | ± 1.5 million km[5] |
| Date and time | Nominal closest approach | Reference |
|---|---|---|
| 17 December 2024 06:14 | Impact scenario | Sentry[2] |
| 17 December 2024 14:15 | 0.0043 AU (640 thousand km) | ESA[8] |
| 17 December 2024 15:41 | 0.0051 AU (760 thousand km) | JPL SBDB[3] |
It reached perihelion (closest approach to the Sun) on 30 January 2023.
