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. 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]
| Discovery[1] | |
|---|---|
| Discovered by | Catalina Sky Survey |
| Discovery date | 17 December 2022 |
| Designations | |
| 2022 YO1 | |
| Orbital characteristics[3] | |
| Epoch 2023-Feb-25 (JD 2460000.5) | |
| Uncertainty parameter 6 | |
| Observation arc | 0.4 days[2] |
| Aphelion | 2.38 AU (Q) |
| Perihelion | 0.8009 AU (q) |
| 1.588 AU (a) | |
| Eccentricity | 0.4957 (e) |
| 2.001 years | |
| 12.42° (M) | |
| Inclination | 13.62° (i) |
| 85.50° (Ω) | |
| 2023-Jan-30[3] | |
| 63.99° (ω) | |
| Earth MOID | 0.00034 AU (51,000 km) |
| Jupiter MOID | 2.7 AU (400,000,000 km) |
| Physical characteristics | |
| Dimensions |
|
| 30[4] | |
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]
| 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.
References
edit- ^ a b "MPEC 2022-Y60 : 2022 YO1". IAU Minor Planet Center. 19 December 2022. Retrieved 26 December 2022. (K22Y01O)
- ^ a b c d e f "Earth Impact Risk Summary: 2022 YO1". NASA/JPL Near-Earth Object Program Office. Archived from the original on 20 December 2022. Retrieved 26 December 2022.
- ^ a b c d e f "JPL Small-Body Database Browser: (2022 YO1)" (last observation: 2022-12-17; arc: 1 day). Jet Propulsion Laboratory. Archived from the original on 21 December 2022. Retrieved 26 December 2022.
- ^ "2022 YO1 Orbit". Minor Planet Center. Retrieved 26 December 2022.
- ^ a b c "Horizons Batch for 2024-12-17 Virtual Impactor". JPL Horizons. Archived from the original on 26 December 2022. Retrieved 26 December 2022. RNG_3sigma = uncertainty range in km. (JPL#1/Soln.date: 2022-Dec-19 generates RNG_3sigma = 1487146 km for 2024-Dec-17.)
- ^ "MPC Ephemeris Service". IAU Minor Planet Center. Retrieved 26 December 2022.
- ^ "2022YO1 Ephemerides for 06:14 Virtual Impactor". NEODyS (Near Earth Objects – Dynamic Site). Archived from the original on 26 December 2022. Retrieved 26 December 2022.
- ^ "ESA Space Situational Awareness: 2022 YO1". esa Space Situational Awareness Programme. Archived from the original on 26 December 2022. Retrieved 26 December 2022.
External links
edit- 2022 YO1 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2022 YO1 at ESA–space situational awareness
- 2022 YO1 at the JPL Small-Body Database