Key Facts

Overview

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

Aegina orbits the sun every 1,520 days (4.16 years), coming as close as 2.31 AU and reaching as far as 2.87 AU from the sun. Aegina is about 103.4 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Delaware.

The rotation of Aegina has been observed. It completes a rotation on its axis every 6.03 days.

Aegina's spectral type CP (Tholen) / Ch (SMASSII) indicates that it is likely to contain nickel, iron, cobalt, water, nitrogen, and ammonia.

No Close Approaches

Aegina's orbit is 1.33 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

Aegina's orbit is determined by observations dating back to Nov. 10, 1866. It was last officially observed on April 28, 2020. The IAU Minor Planet Center records 2,660 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 Aegina:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 2.59 AU
  • Eccentricity: 0.1064
  • Inclination: 2.1°
  • Longitude of Ascending Node: 10.44°
  • Argument of Periapsis: 74.27°
  • Mean Anomaly: 261.33°

Physical Characteristics

  • Diameter: 103.40200 km
  • Magnitude: 8.9
  • Albedo: 0.048
  • Spectral type (Tholen): CP
  • Spectral type (SMASS): Ch

Derived Characteristics

  • Orbit Period: 1,520 days (4.16 years)
  • Avg. Orbit Speed: 18.54 km/s
  • Aphelion Distance: 2.87 AU
  • Perihelion Distance: 2.31 AU
  • Rotation Period: 6.03 hours
  • Approx. Composition: nickel, iron, cobalt, water, nitrogen, and ammonia.

Map Comparison

Click to load map

Orbit Simulation

Sky Map

The position of Aegina 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.