Key Facts

Overview

Annelemaitre is a mid-sized asteroid with an orbit that crosses the orbit of Mars. NASA JPL has not classified Annelemaitre as potentially hazardous because its orbit does not bring it close to Earth.

Annelemaitre orbits the sun every 1,320 days (3.61 years), coming as close as 1.65 AU and reaching as far as 3.07 AU from the sun. Annelemaitre is about 4.3 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the island of Manhattan.

The rotation of Annelemaitre has been observed. It completes a rotation on its axis every 4.44 hours.

No Close Approaches

Annelemaitre's orbit is 0.78 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

Annelemaitre's orbit is determined by observations dating back to March 28, 1954. It was last officially observed on June 24, 2023. The IAU Minor Planet Center records 3,646 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 Annelemaitre:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.358 AU
  • Eccentricity: 0.301
  • Inclination: 21.64°
  • Longitude of Ascending Node: 191.08°
  • Argument of Periapsis: 253.08°
  • Mean Anomaly: 131.24°

Physical Characteristics

  • Diameter: 4.34900 km
  • Magnitude: 13.5
  • Albedo: 0.389

Derived Characteristics

  • Orbit Period: 1,320 days (3.61 years)
  • Avg. Orbit Speed: 19.43 km/s
  • Aphelion Distance: 3.07 AU
  • Perihelion Distance: 1.65 AU
  • Rotation Period: 4.44 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Annelemaitre 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 Annelemaitre 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.