Key Facts

Overview

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

Buncher orbits the sun every 1,270 days (3.48 years), coming as close as 2.17 AU and reaching as far as 2.43 AU from the sun. Buncher is about 7.4 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

The rotation of Buncher has been observed. It completes a rotation on its axis every 8.12 hours.

No Close Approaches

Buncher's orbit is 1.15 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

Buncher's orbit is determined by observations dating back to Feb. 12, 1977. It was last officially observed on June 23, 2023. The IAU Minor Planet Center records 2,555 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 Buncher:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.297 AU
  • Eccentricity: 0.0569
  • Inclination: 9.54°
  • Longitude of Ascending Node: 93.95°
  • Argument of Periapsis: 185.0°
  • Mean Anomaly: 359.82°

Physical Characteristics

  • Diameter: 7.43800 km
  • Magnitude: 14.55
  • Albedo: 0.063

Derived Characteristics

  • Orbit Period: 1,270 days (3.48 years)
  • Avg. Orbit Speed: 19.68 km/s
  • Aphelion Distance: 2.43 AU
  • Perihelion Distance: 2.17 AU
  • Rotation Period: 8.12 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Buncher 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.