Key Facts

  • Categorized as a Main-belt Asteroid
  • Comparable in size to the U.S. state of Rhode Island (41.85 km diameter)
  • Not a Near Earth Object
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

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

Astrid orbits the sun every 1,700 days (4.65 years), coming as close as 2.66 AU and reaching as far as 2.91 AU from the sun. Astrid is about 41.9 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Rhode Island.

The rotation of Astrid has been observed. It completes a rotation on its axis every 10.23 hours.

Astrid's spectral type None (Tholen) / C (SMASSII) indicates that it is likely to contain water, iron, nickel, cobalt, nitrogen, and ammonia.

No Close Approaches

Astrid's orbit is 1.65 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

Astrid's orbit is determined by observations dating back to May 9, 1920. It was last officially observed on July 5, 2023. The IAU Minor Planet Center records 4,698 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 Astrid:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.787 AU
  • Eccentricity: 0.0441
  • Inclination: 1.01°
  • Longitude of Ascending Node: 59.43°
  • Argument of Periapsis: 234.85°
  • Mean Anomaly: 353.57°

Physical Characteristics

  • Diameter: 41.85100 km
  • Magnitude: 10.94
  • Albedo: 0.031
  • Spectral type (SMASS): C

Derived Characteristics

  • Orbit Period: 1,700 days (4.65 years)
  • Avg. Orbit Speed: 17.84 km/s
  • Aphelion Distance: 2.91 AU
  • Perihelion Distance: 2.66 AU
  • Rotation Period: 10.23 hours
  • Approx. Composition: water, iron, nickel, cobalt, nitrogen, and ammonia.

Map Comparison

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Orbit Simulation

Sky Map

The position of Astrid 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.