Key Facts

  • Categorized as a Jupiter Trojan
  • Comparable in size to the U.S. state of Rhode Island (50.80 km diameter)
  • Not a Near Earth Object
  • Not a Potentially Hazardous Object
  • See orbit simulation


Agenor is a large asteroid that shares Jupiter's orbit around the sun. NASA JPL has not classified Agenor as potentially hazardous because its orbit does not bring it close to Earth.

Agenor orbits the sun every 4,370 days (11.96 years), coming as close as 4.75 AU and reaching as far as 5.71 AU from the sun. Agenor is about 50.8 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Rhode Island.

The rotation of Agenor has been observed. It completes a rotation on its axis every 20.60 hours.

No Close Approaches

Agenor's orbit is 3.75 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

Agenor's orbit is determined by observations dating back to March 25, 1971. It was last officially observed on Aug. 8, 2021. The IAU Minor Planet Center records 2,584 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 Agenor:



   or view a random object

Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 5.229 AU
  • Eccentricity: 0.0919
  • Inclination: 21.88°
  • Longitude of Ascending Node: 197.92°
  • Argument of Periapsis: 358.07°
  • Mean Anomaly: 58.28°

Physical Characteristics

  • Diameter: 50.79900 km
  • Magnitude: 10.26
  • Albedo: 0.062

Derived Characteristics

  • Orbit Period: 4,370 days (11.96 years)
  • Avg. Orbit Speed: 13.02 km/s
  • Aphelion Distance: 5.71 AU
  • Perihelion Distance: 4.75 AU
  • Rotation Period: 20.60 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Agenor 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.