Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 23,737,114 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2022 WN2 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2022 WN2 as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

2022 WN2 orbits the sun every 374 days (1.02 years), coming as close as 0.95 AU and reaching as far as 1.08 AU from the sun. Based on its brightness and the way it reflects light, 2022 WN2 is probably between 0.003 to 0.013 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2022 WN2's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

2022 WN2 has 14 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Nov. 17, 2021 23,737,114 7.944
Nov. 22, 2022 1,069,358 5.344
May 25, 2023 18,161,032 5.256
Nov. 21, 2023 23,590,448 5.982
May 17, 2024 5,246,025 5.471
Nov. 19, 2057 20,444,734 7.521
Nov. 22, 2058 5,922,284 5.091
May 21, 2059 11,340,936 4.974
May 16, 2060 15,608,633 6.622
Nov. 20, 2091 16,838,469 6.991
Nov. 21, 2092 10,688,015 5.112
May 18, 2093 6,994,079 4.959
May 16, 2094 20,031,585 7.231
May 18, 2128 2,800,598 5.192

Images and Observations

2022 WN2's orbit is determined by observations dating back to Nov. 20, 2022. It was last officially observed on Nov. 25, 2022. The IAU Minor Planet Center records 32 observations used to determine its orbit.

Accessibility and Exploration

2022 WN2 can be reached with a journey of 362 days. This trajectory would require a delta-v of 5.33 km/s. To put this into perspective, the delta-v to launch a rocket to Low-Earth Orbit is 9.7 km/s. There are 352,661 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2022 WN2.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2022 WN2:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.016 AU
  • Eccentricity: 0.0636
  • Inclination: 9.66°
  • Longitude of Ascending Node: 58.93°
  • Argument of Periapsis: 73.6°
  • Mean Anomaly: 217.35°

Physical Characteristics

  • Diameter: ~0.008 km
  • Magnitude: 28.95

Derived Characteristics

  • Orbit Period: 374 days (1.02 years)
  • Avg. Orbit Speed: 29.55 km/s
  • Aphelion Distance: 1.08 AU
  • Perihelion Distance: 0.95 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2022 WN2 is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.