2022 YO1 - Wikipedia

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 by	Catalina Sky Survey
Discovery date	17 December 2022
Designations
MPC designation	2022 YO₁
Minor planet category	NEO Apollo risk listed^[2]
Orbital characteristics^[3]
Epoch 2023-Feb-25 (JD 2460000.5)
Uncertainty parameter6
Observation arc	0.4 days^[2]
Aphelion	2.38 AU (Q)
Perihelion	0.8009 AU (q)
Semi-major axis	1.588 AU (a)
Eccentricity	0.4957 (e)
Orbital period (sidereal)	2.001 years
Mean anomaly	12.42° (M)
Inclination	13.62° (i)
Longitude of ascending node	85.50° (Ω)
Time of perihelion	2023-Jan-30^[3]
Argument of perihelion	63.99° (ω)
Earth MOID	0.00034 AU (51,000 km)
Jupiter MOID	2.7 AU (400,000,000 km)
Physical characteristics
Dimensions	~3 m (10 ft)^[2] 3–6 meters (CNEOS)
Absolute magnitude (H)	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 06:14	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]

Line of variation (LOV) and different closest approaches
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]

^ "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.

2022 YO₁

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