Key Facts

Overview

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

Rollandia orbits the sun every 2,820 days (7.72 years), coming as close as 3.52 AU and reaching as far as 4.28 AU from the sun. Rollandia is about 104.9 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Delaware.

The rotation of Rollandia has been observed. It completes a rotation on its axis every 60.45 hours.

Rollandia's spectral type D (Tholen) / None (SMASSII) indicates that it is likely to contain .

No Close Approaches

Rollandia's orbit is 2.53 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

Rollandia's orbit is determined by observations dating back to March 3, 1902. It was last officially observed on July 4, 2023. The IAU Minor Planet Center records 4,384 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 Rollandia:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.904 AU
  • Eccentricity: 0.0972
  • Inclination: 2.76°
  • Longitude of Ascending Node: 134.71°
  • Argument of Periapsis: 19.24°
  • Mean Anomaly: 197.95°

Physical Characteristics

  • Diameter: 104.89300 km
  • Magnitude: 8.86
  • Albedo: 0.048
  • Spectral type (Tholen): D

Derived Characteristics

  • Orbit Period: 2,820 days (7.72 years)
  • Avg. Orbit Speed: 15.06 km/s
  • Aphelion Distance: 4.28 AU
  • Perihelion Distance: 3.52 AU
  • Rotation Period: 60.45 hours
  • Approx. Composition: .

Map Comparison

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Orbit Simulation

Sky Map

The position of Rollandia 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.