Key Facts


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

Chaos orbits the sun every 114,000 days (312.11 years), coming as close as 41.03 AU and reaching as far as 50.85 AU from the sun. Based on its brightness and the way it reflects light, Chaos is probably between 315.177 to 704.758 kilometers in diameter, making it one of the largest objects, very roughly comparable in size to the U.S. state of Iowa.

No Close Approaches

Chaos's orbit is 40.10 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

Chaos's orbit is determined by observations dating back to Oct. 17, 1991. It was last officially observed on Jan. 11, 2021. The IAU Minor Planet Center records 162 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 Chaos:



   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 45.94 AU
  • Eccentricity: 0.1068
  • Inclination: 12.01°
  • Longitude of Ascending Node: 49.87°
  • Argument of Periapsis: 55.44°
  • Mean Anomaly: 348.74°

Physical Characteristics

  • Diameter: ~406.892 km
  • Magnitude: 4.63

Derived Characteristics

  • Orbit Period: 114,000 days (312.11 years)
  • Avg. Orbit Speed: 4.38 km/s
  • Aphelion Distance: 50.85 AU
  • Perihelion Distance: 41.03 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Chaos 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.