Key Facts

Overview

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

Oenone orbits the sun every 1,680 days (4.60 years), coming as close as 2.67 AU and reaching as far as 2.86 AU from the sun. Oenone is about 35.2 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Los Angeles.

The rotation of Oenone has been observed. It completes a rotation on its axis every 27.94 hours.

No Close Approaches

Oenone's orbit is 1.66 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

Oenone's orbit is determined by observations dating back to April 13, 1880. It was last officially observed on July 5, 2023. The IAU Minor Planet Center records 8,240 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 Oenone:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.767 AU
  • Eccentricity: 0.0338
  • Inclination: 1.68°
  • Longitude of Ascending Node: 24.9°
  • Argument of Periapsis: 318.23°
  • Mean Anomaly: 285.47°

Physical Characteristics

  • Diameter: 35.21000 km
  • Magnitude: 9.63
  • Albedo: 0.243
  • Spectral type (Tholen): S

Derived Characteristics

  • Orbit Period: 1,680 days (4.60 years)
  • Avg. Orbit Speed: 17.92 km/s
  • Aphelion Distance: 2.86 AU
  • Perihelion Distance: 2.67 AU
  • Rotation Period: 27.94 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Oenone 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.