Key Facts

Overview

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

Walterhorn orbits the sun every 2,080 days (5.69 years), coming as close as 2.68 AU and reaching as far as 3.70 AU from the sun. Walterhorn is about 14.1 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Cleveland, Ohio.

No Close Approaches

Walterhorn's orbit is 1.69 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

Walterhorn's orbit is determined by observations dating back to Oct. 11, 1937. It was last officially observed on March 5, 2023. The IAU Minor Planet Center records 3,442 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 Walterhorn:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.188 AU
  • Eccentricity: 0.1597
  • Inclination: 0.31°
  • Longitude of Ascending Node: 355.05°
  • Argument of Periapsis: 73.88°
  • Mean Anomaly: 24.21°

Physical Characteristics

  • Diameter: 14.12800 km
  • Magnitude: 12.67
  • Albedo: 0.097

Derived Characteristics

  • Orbit Period: 2,080 days (5.69 years)
  • Avg. Orbit Speed: 16.67 km/s
  • Aphelion Distance: 3.70 AU
  • Perihelion Distance: 2.68 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Walterhorn 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.