Key Facts

  • Categorized as a Main-belt Asteroid
  • Comparable in size to the U.S. state of Rhode Island (62.38 km diameter)
  • Not a Near Earth Object
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

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

Eurydike orbits the sun every 1,600 days (4.38 years), coming as close as 1.86 AU and reaching as far as 3.49 AU from the sun. Eurydike is about 62.4 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Rhode Island.

The rotation of Eurydike has been observed. It completes a rotation on its axis every 5.36 days.

Eurydike's spectral type M (Tholen) / Xk (SMASSII) indicates that it is likely to contain nickel, iron, and cobalt.

No Close Approaches

Eurydike's orbit is 0.86 AU from Earth's orbit at its closest point. This means that there is an 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

Eurydike's orbit is determined by observations dating back to Feb. 2, 1864. It was last officially observed on Feb. 4, 2020. The IAU Minor Planet Center records 3,437 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 Eurydike:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 2.674 AU
  • Eccentricity: 0.3035
  • Inclination: 4.99°
  • Longitude of Ascending Node: 359.34°
  • Argument of Periapsis: 339.34°
  • Mean Anomaly: 52.01°

Physical Characteristics

  • Diameter: 62.37700 km
  • Magnitude: 9.0
  • Albedo: 0.117
  • Spectral type (Tholen): M
  • Spectral type (SMASS): Xk

Derived Characteristics

  • Orbit Period: 1,600 days (4.38 years)
  • Avg. Orbit Speed: 18.18 km/s
  • Aphelion Distance: 3.49 AU
  • Perihelion Distance: 1.86 AU
  • Rotation Period: 5.36 hours
  • Approx. Composition: nickel, iron, and cobalt.

Map Comparison

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Orbit Simulation

Sky Map

The position of Eurydike 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.