Key Facts


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

Otthild orbits the sun every 1,470 days (4.02 years), coming as close as 2.24 AU and reaching as far as 2.82 AU from the sun. Otthild is about 20.8 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.

The rotation of Otthild has been observed. It completes a rotation on its axis every 5.95 hours.

Otthild's spectral type None (Tholen) / S (SMASSII) indicates that it is likely to contain and .

No Close Approaches

Otthild's orbit is 1.23 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

Otthild's orbit is determined by observations dating back to March 18, 1923. It was last officially observed on Aug. 31, 2022. The IAU Minor Planet Center records 3,532 observations used to determine its orbit.

Scientists have been able to determine this object's shape:

View asteroid Otthild in 3D.

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 Otthild:



   or view a random object

Orbital Elements

  • Epoch: 2459800.5 JD
  • Semi-major axis: 2.529 AU
  • Eccentricity: 0.1161
  • Inclination: 15.42°
  • Longitude of Ascending Node: 2.31°
  • Argument of Periapsis: 341.97°
  • Mean Anomaly: 90.78°

Physical Characteristics

  • Diameter: 20.78600 km
  • Magnitude: 10.17
  • Albedo: 0.310
  • Spectral type (SMASS): S

Derived Characteristics

  • Orbit Period: 1,470 days (4.02 years)
  • Avg. Orbit Speed: 18.72 km/s
  • Aphelion Distance: 2.82 AU
  • Perihelion Distance: 2.24 AU
  • Rotation Period: 5.95 hours
  • Approx. Composition: and .

Map Comparison

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Orbit Simulation

Sky Map

The position of Otthild 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.