Key Facts

Overview

Praetorius is a large asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Praetorius as potentially hazardous because its orbit does not bring it close to Earth.

Praetorius orbits the sun every 1,980 days (5.42 years), coming as close as 2.48 AU and reaching as far as 3.70 AU from the sun. Praetorius is about 21.2 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.

No Close Approaches

Praetorius's orbit is 1.54 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

Praetorius's orbit is determined by observations dating back to Feb. 2, 1979. It was last officially observed on June 23, 2023. The IAU Minor Planet Center records 3,404 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 Praetorius:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.09 AU
  • Eccentricity: 0.1985
  • Inclination: 13.93°
  • Longitude of Ascending Node: 185.58°
  • Argument of Periapsis: 276.2°
  • Mean Anomaly: 113.35°

Physical Characteristics

  • Diameter: 21.18100 km
  • Magnitude: 12.45
  • Albedo: 0.024

Derived Characteristics

  • Orbit Period: 1,980 days (5.42 years)
  • Avg. Orbit Speed: 16.98 km/s
  • Aphelion Distance: 3.70 AU
  • Perihelion Distance: 2.48 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Praetorius 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.