2022 YO1

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 and was first imaged on 17 December 2022 07:07 when it was 0.004 AU (600 thousand km) from Earth.

2022 YO1
Discovery[1]
Discovered byCatalina Sky Survey
Discovery date17 December 2022
Designations
2022 YO1
Orbital characteristics[3]
Epoch 2023-Feb-25 (JD 2460000.5)
Uncertainty parameter 6
Observation arc0.4 days[2]
Aphelion2.38 AU (Q)
Perihelion0.8009 AU (q)
1.588 AU (a)
Eccentricity0.4957 (e)
2.001 years
12.42° (M)
Inclination13.62° (i)
85.50° (Ω)
2023-Jan-30[3]
63.99° (ω)
Earth MOID0.00034 AU (51,000 km)
Jupiter MOID2.7 AU (400,000,000 km)
Physical characteristics
Dimensions
  • ~3 m (10 ft)[2]
  • 3–6 meters (CNEOS)
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]

    2024-Dec-17 06:14 Virtual Impactor[2]
    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 06:140.23%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]
    Line of variation (LOV) and different closest approaches
    Date and time Nominal closest approach Reference
    17 December 2024 06:14Impact scenarioSentry[2]
    17 December 2024 14:150.0043 AU (640 thousand km)ESA[8]
    17 December 2024 15:410.0051 AU (760 thousand km)JPL SBDB[3]

    It will come to perihelion (closest approach to the Sun) on 30 January 2023.[3]

    References
    1. "MPEC 2022-Y60 : 2022 YO1". IAU Minor Planet Center. 19 December 2022. Retrieved 26 December 2022. (K22Y01O)
    2. "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.
    3. "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.
    4. "2022 YO1 Orbit". Minor Planet Center. Retrieved 26 December 2022.
    5. "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.)
    6. "MPC Ephemeris Service". IAU Minor Planet Center. Retrieved 26 December 2022.
    7. "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.
    8. "ESA Space Situational Awareness: 2022 YO1". esa Space Situational Awareness Programme. Archived from the original on 26 December 2022. Retrieved 26 December 2022.
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