Key Facts


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

Adelinda orbits the sun every 2,310 days (6.32 years), coming as close as 2.95 AU and reaching as far as 3.89 AU from the sun. Adelinda is about 105.9 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Delaware.

The rotation of Adelinda has been observed. It completes a rotation on its axis every 6.60 hours.

No Close Approaches

Adelinda's orbit is 1.94 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

Adelinda's orbit is determined by observations dating back to Jan. 19, 1885. It was last officially observed on April 17, 2023. The IAU Minor Planet Center records 6,938 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 Adelinda:



   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.421 AU
  • Eccentricity: 0.1369
  • Inclination: 2.08°
  • Longitude of Ascending Node: 27.83°
  • Argument of Periapsis: 309.08°
  • Mean Anomaly: 125.07°

Physical Characteristics

  • Diameter: 105.91200 km
  • Magnitude: 9.4
  • Albedo: 0.035
  • Spectral type (Tholen): BCU

Derived Characteristics

  • Orbit Period: 2,310 days (6.32 years)
  • Avg. Orbit Speed: 16.11 km/s
  • Aphelion Distance: 3.89 AU
  • Perihelion Distance: 2.95 AU
  • Rotation Period: 6.60 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Adelinda 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.