Key Facts

  • Categorized as a Jupiter Trojan
  • Comparable in size to the city of Indianapolis (25.88 km diameter)
  • Not a Near Earth Object
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

23123 (2000 AU57) is a large asteroid that shares Jupiter's orbit around the sun. NASA JPL has not classified 2000 AU57 as potentially hazardous because its orbit does not bring it close to Earth.

2000 AU57 orbits the sun every 4,510 days (12.35 years), coming as close as 5.02 AU and reaching as far as 5.66 AU from the sun. 2000 AU57 is about 25.9 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.

The rotation of 2000 AU57 has been observed. It completes a rotation on its axis every 467.26 hours.

No Close Approaches

2000 AU57's orbit is 4.05 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

2000 AU57's orbit is determined by observations dating back to Feb. 27, 1976. It was last officially observed on April 8, 2023. The IAU Minor Planet Center records 1,760 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 2000 AU57:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 5.341 AU
  • Eccentricity: 0.0597
  • Inclination: 8.53°
  • Longitude of Ascending Node: 317.71°
  • Argument of Periapsis: 125.5°
  • Mean Anomaly: 12.98°

Physical Characteristics

  • Diameter: 25.88300 km
  • Magnitude: 11.38
  • Albedo: 0.096

Derived Characteristics

  • Orbit Period: 4,510 days (12.35 years)
  • Avg. Orbit Speed: 12.88 km/s
  • Aphelion Distance: 5.66 AU
  • Perihelion Distance: 5.02 AU
  • Rotation Period: 467.26 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 23123 (2000 AU57) 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.