Key Facts

Overview

Oterma is a large asteroid that orbits between Mars and Jupiter in the outer reaches of the main asteroid belt. NASA JPL has not classified Oterma as potentially hazardous because its orbit does not bring it close to Earth.

Oterma orbits the sun every 2,910 days (7.97 years), coming as close as 3.18 AU and reaching as far as 4.79 AU from the sun. Oterma is about 56.3 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Rhode Island.

The rotation of Oterma has been observed. It completes a rotation on its axis every 14.32 hours.

No Close Approaches

Oterma's orbit is 2.20 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

Oterma's orbit is determined by observations dating back to June 24, 1950. It was last officially observed on July 5, 2023. The IAU Minor Planet Center records 3,309 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 Oterma:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.988 AU
  • Eccentricity: 0.2021
  • Inclination: 9.06°
  • Longitude of Ascending Node: 100.59°
  • Argument of Periapsis: 294.66°
  • Mean Anomaly: 323.37°

Physical Characteristics

  • Diameter: 56.31900 km
  • Magnitude: 10.01
  • Albedo: 0.054
  • Spectral type (Tholen): P:

Derived Characteristics

  • Orbit Period: 2,910 days (7.97 years)
  • Avg. Orbit Speed: 14.91 km/s
  • Aphelion Distance: 4.79 AU
  • Perihelion Distance: 3.18 AU
  • Rotation Period: 14.32 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Oterma 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.