Key Facts

Overview

162805 (2001 AR) is a large asteroid that shares Jupiter's orbit around the sun. NASA JPL has not classified 2001 AR as potentially hazardous because its orbit does not bring it close to Earth.

2001 AR orbits the sun every 4,330 days (11.85 years), coming as close as 4.62 AU and reaching as far as 5.78 AU from the sun. Based on its brightness and the way it reflects light, 2001 AR is probably between 9.518 to 21.283 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the city of Cleveland, Ohio.

The rotation of 2001 AR has been observed. It completes a rotation on its axis every 10.08 hours.

No Close Approaches

2001 AR's orbit is 3.67 AU from Earth's orbit at its closest point. This means that there is an extremely wide berth between this asteroid and Earth at all times.

Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.

Images and Observations

2001 AR's orbit is determined by observations dating back to Jan. 8, 2000. It was last officially observed on Feb. 21, 2023. The IAU Minor Planet Center records 751 observations used to determine its orbit.

Accessibility and Exploration

This asteroid is not considered a viable target for human exploration by the NHATS study.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2001 AR:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 5.2 AU
  • Eccentricity: 0.1122
  • Inclination: 25.21°
  • Longitude of Ascending Node: 130.74°
  • Argument of Periapsis: 320.9°
  • Mean Anomaly: 3.16°

Physical Characteristics

  • Diameter: ~12.288 km
  • Magnitude: 12.23

Derived Characteristics

  • Orbit Period: 4,330 days (11.85 years)
  • Avg. Orbit Speed: 13.06 km/s
  • Aphelion Distance: 5.78 AU
  • Perihelion Distance: 4.62 AU
  • Rotation Period: 10.08 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 162805 (2001 AR) 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.