Key Facts


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

Aldrin orbits the sun every 1,250 days (3.42 years), coming as close as 1.93 AU and reaching as far as 2.62 AU from the sun. Based on its brightness and the way it reflects light, Aldrin is probably between 3.472 to 7.763 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the island of Manhattan.

The rotation of Aldrin has been observed. It completes a rotation on its axis every 5.99 hours.

No Close Approaches

Aldrin's orbit is 0.94 AU from Earth's orbit at its closest point. This means that there is a very 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

Aldrin's orbit is determined by observations dating back to Sept. 14, 1982. It was last officially observed on May 13, 2021. The IAU Minor Planet Center records 2,438 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 Aldrin:



   or view a random object

Orbital Elements

  • Epoch: 2459600.5 JD
  • Semi-major axis: 2.276 AU
  • Eccentricity: 0.1513
  • Inclination: 2.79°
  • Longitude of Ascending Node: 237.9°
  • Argument of Periapsis: 152.78°
  • Mean Anomaly: 142.75°

Physical Characteristics

  • Diameter: ~4.482 km
  • Magnitude: 14.42

Derived Characteristics

  • Orbit Period: 1,250 days (3.42 years)
  • Avg. Orbit Speed: 19.81 km/s
  • Aphelion Distance: 2.62 AU
  • Perihelion Distance: 1.93 AU
  • Rotation Period: 5.99 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Aldrin 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.

Size Rendering

The above comparison is an artistic rendering that uses available data on the diameter of Aldrin to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.