Key Facts

Overview

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

Harunasan orbits the sun every 1,890 days (5.17 years), coming as close as 2.40 AU and reaching as far as 3.59 AU from the sun. Harunasan is about 11.1 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Boston.

No Close Approaches

Harunasan's orbit is 1.41 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

Harunasan's orbit is determined by observations dating back to Oct. 7, 1940. It was last officially observed on July 1, 2023. The IAU Minor Planet Center records 2,391 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 Harunasan:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.996 AU
  • Eccentricity: 0.1983
  • Inclination: 11.14°
  • Longitude of Ascending Node: 340.75°
  • Argument of Periapsis: 37.26°
  • Mean Anomaly: 358.35°

Physical Characteristics

  • Diameter: 11.06500 km
  • Magnitude: 12.67
  • Albedo: 0.173

Derived Characteristics

  • Orbit Period: 1,890 days (5.17 years)
  • Avg. Orbit Speed: 17.25 km/s
  • Aphelion Distance: 3.59 AU
  • Perihelion Distance: 2.40 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Harunasan 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.