Astronomy:2022 YO1

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2022 YO1
Discovery[1]
Discovered byCatalina Sky Survey
Discovery date17 December 2022
Designations
2022 YO1
Minor planet category
Orbital characteristics[3]
Epoch 2025-Nov-21 (JD 2461000.5)
Uncertainty parameter 6
Observation arc0.4 days[2]
|{{{apsis}}}|helion}}2.40 astronomical unit|AU (Q)
|{{{apsis}}}|helion}}0.8027 AU (q)
1.600 AU (a)
Eccentricity0.4984 (e)
Orbital period2.024 years
Mean anomaly143.50° (M)
Inclination13.56° (i)
Longitude of ascending node85.48° (Ω)
|{{{apsis}}}|helion}}2023-Jan-30[3]
63.48° (ω)
Earth MOID0.00017 AU (25,000 km)
Jupiter MOID2.7 AU (400,000,000 km)
Physical characteristics
Dimensions
  • ~3 m (10 ft)[2]
  • 3–6 meters (CNEOS)
Absolute magnitude (H)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]

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 astronomical unit|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]

It reached perihelion (closest approach to the Sun) on 30 January 2023.

References

  1. ↑ 1.0 1.1 "MPEC 2022-Y60 : 2022 YO1". IAU Minor Planet Center. 2022-12-19. https://www.minorplanetcenter.net/mpec/K22/K22Y60.html. Retrieved 2022-12-26.  (K22Y01O)
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 "Earth Impact Risk Summary: 2022 YO1". NASA/JPL Near-Earth Object Program Office. https://cneos.jpl.nasa.gov/sentry/details.html#?des=2022%20YO1. Retrieved 2022-12-26. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "JPL Small-Body Database Browser: (2022 YO1)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2022YO1&view=OPC. Retrieved 2022-12-26. 
  4. ↑ "2022 YO1 Orbit". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2022+YO1. Retrieved 2022-12-26. 
  5. ↑ 5.0 5.1 5.2 "Horizons Batch for 2024-12-17 Virtual Impactor". JPL Horizons. https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272022+YO1%27&START_TIME=%272024-12-17%2006:14%27&STOP_TIME=%272024-12-18%27&STEP_SIZE=%271%20day%27&QUANTITIES=%2720,39%27. Retrieved 2022-12-26.  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. https://minorplanetcenter.net//iau/MPEph/MPEph.html. Retrieved 2022-12-26. 
  7. ↑ "2022YO1 Ephemerides for 06:14 Virtual Impactor". NEODyS (Near Earth Objects – Dynamic Site). https://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2022YO1&oc=500&y0=2024&m0=12&d0=17&h0=6&mi0=14&y1=2024&m1=12&d1=17&h1=6&mi1=14&ti=1.0&tiu=minutes. Retrieved 2022-12-26. 
  8. ↑ "ESA Space Situational Awareness: 2022 YO1". esa Space Situational Awareness Programme. http://neo.ssa.esa.int/search-for-asteroids?tab=closeapp&des=2022YO1. Retrieved 2022-12-26. 



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