Key Facts

Overview

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

Odessa orbits the sun every 1,670 days (4.57 years), coming as close as 2.03 AU and reaching as far as 3.49 AU from the sun. Odessa is about 15.9 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Philadelphia.

The rotation of Odessa has been observed. It completes a rotation on its axis every 8.24 hours.

Odessa's spectral type None (Tholen) / Xk (SMASSII) indicates that it is likely to contain iron, nickel, and cobalt.

No Close Approaches

Odessa's orbit is 1.03 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

Odessa's orbit is determined by observations dating back to July 5, 1954. It was last officially observed on July 4, 2023. The IAU Minor Planet Center records 4,100 observations used to determine its orbit.

Scientists have been able to determine this object's shape:

View asteroid Odessa in 3D.

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 Odessa:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.759 AU
  • Eccentricity: 0.2635
  • Inclination: 12.45°
  • Longitude of Ascending Node: 197.29°
  • Argument of Periapsis: 352.96°
  • Mean Anomaly: 121.17°

Physical Characteristics

  • Diameter: 15.91000 km
  • Magnitude: 11.88
  • Albedo: 0.175
  • Spectral type (SMASS): Xk

Derived Characteristics

  • Orbit Period: 1,670 days (4.57 years)
  • Avg. Orbit Speed: 17.97 km/s
  • Aphelion Distance: 3.49 AU
  • Perihelion Distance: 2.03 AU
  • Rotation Period: 8.24 hours
  • Approx. Composition: iron, nickel, and cobalt.

Map Comparison

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Orbit Simulation

Sky Map

The position of Odessa 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.