Key Facts

Overview

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

Arkesilaos orbits the sun every 4,260 days (11.66 years), coming as close as 5.04 AU and reaching as far as 5.24 AU from the sun. Based on its brightness and the way it reflects light, Arkesilaos is probably between 10.729 to 23.991 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the city of Cleveland, Ohio.

No Close Approaches

Arkesilaos's orbit is 4.07 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

Arkesilaos's orbit is determined by observations dating back to Sept. 19, 1973. It was last officially observed on March 13, 2023. The IAU Minor Planet Center records 1,291 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 Arkesilaos:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 5.144 AU
  • Eccentricity: 0.0193
  • Inclination: 9.2°
  • Longitude of Ascending Node: 27.88°
  • Argument of Periapsis: 49.59°
  • Mean Anomaly: 20.95°

Physical Characteristics

  • Diameter: ~13.851 km
  • Magnitude: 11.97

Derived Characteristics

  • Orbit Period: 4,260 days (11.66 years)
  • Avg. Orbit Speed: 13.14 km/s
  • Aphelion Distance: 5.24 AU
  • Perihelion Distance: 5.04 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Arkesilaos 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.