Key Facts

Overview

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

Mukai orbits the sun every 1,180 days (3.23 years), coming as close as 1.99 AU and reaching as far as 2.38 AU from the sun. Mukai is about 8.7 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

The rotation of Mukai has been observed. It completes a rotation on its axis every 38.30 hours.

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

No Close Approaches

Mukai's orbit is 1.01 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

Mukai's orbit is determined by observations dating back to Nov. 30, 1951. It was last officially observed on March 26, 2023. The IAU Minor Planet Center records 3,059 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 Mukai:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.184 AU
  • Eccentricity: 0.0896
  • Inclination: 4.9°
  • Longitude of Ascending Node: 294.87°
  • Argument of Periapsis: 140.21°
  • Mean Anomaly: 76.16°

Physical Characteristics

  • Diameter: 8.66600 km
  • Magnitude: 14.16
  • Albedo: 0.069
  • Spectral type (SMASS): X

Derived Characteristics

  • Orbit Period: 1,180 days (3.23 years)
  • Avg. Orbit Speed: 20.14 km/s
  • Aphelion Distance: 2.38 AU
  • Perihelion Distance: 1.99 AU
  • Rotation Period: 38.30 hours
  • Approx. Composition: iron, nickel, and cobalt.

Map Comparison

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Orbit Simulation

Sky Map

The position of Mukai 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.