Key Facts

Overview

Arawn is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified Arawn as potentially hazardous because its orbit does not bring it close to Earth.

Arawn orbits the sun every 91,400 days (250.24 years), coming as close as 34.83 AU and reaching as far as 44.61 AU from the sun. Based on its brightness and the way it reflects light, Arawn is probably between 76.658 to 171.412 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Delaware.

The rotation of Arawn has been observed. It completes a rotation on its axis every 5.47 days.

No Close Approaches

Arawn's orbit is 33.80 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

Arawn's orbit is determined by observations dating back to May 12, 1994. It was last officially observed on April 8, 2016. The IAU Minor Planet Center records 78 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 Arawn:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 39.72 AU
  • Eccentricity: 0.1231
  • Inclination: 3.8°
  • Longitude of Ascending Node: 144.79°
  • Argument of Periapsis: 104.59°
  • Mean Anomaly: 32.93°

Physical Characteristics

  • Diameter: ~98.964 km
  • Magnitude: 7.7

Derived Characteristics

  • Orbit Period: 91,400 days (250.24 years)
  • Avg. Orbit Speed: 4.73 km/s
  • Aphelion Distance: 44.61 AU
  • Perihelion Distance: 34.83 AU
  • Rotation Period: 5.47 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Arawn 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.