Key Facts

Overview

Bienor is a average-sized asteroid with an orbit between Jupiter and Neptune. NASA JPL has not classified Bienor as potentially hazardous because its orbit does not bring it close to Earth.

Bienor orbits the sun every 24,331 days (66.62 years), coming as close as 13.16 AU and reaching as far as 19.71 AU from the sun. Bienor is about 187.5 kilometers in diameter, making it larger than most asteroids, comparable in size to the U.S. state of Maryland.

The rotation of Bienor has been observed. It completes a rotation on its axis every 9.14 days.

No Close Approaches

Bienor's orbit is 12.19 AU from Earth's orbit at its closest point. This means that there is a 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

Bienor's orbit is determined by observations dating back to June 8, 1975. It was last officially observed on Sept. 17, 2018. The IAU Minor Planet Center records 284 observations used to determine its orbit.

Accessibility and Exploration

This asteroid is not considered a viable target for human exploration by the NHATS study.

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 16.4328412915 AU
  • Eccentricity: 0.199189343307
  • Inclination: 20.7446320435°
  • Longitude of Ascending Node: 337.775909984°
  • Argument of Periapsis: 153.628340871°
  • Mean Anomaly: 312.342539338°

Physical Characteristics

  • Diameter: 187.50000 km
  • Magnitude: 7.5
  • Albedo: 0.050

Derived Characteristics

  • Orbit Period: 24,331 days (66.62 years)
  • Avg. Orbit Speed: 7.35 km/s
  • Aphelion Distance: 19.71 AU
  • Perihelion Distance: 13.16 AU
  • Rotation Period: 9.14 days

Size Comparison

Orbit Simulation

Sky Map

The position of Bienor 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.