Key Facts

Overview

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

Ontake orbits the sun every 2,070 days (5.67 years), coming as close as 3.07 AU and reaching as far as 3.29 AU from the sun. Ontake is about 33.1 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of New York.

No Close Approaches

Ontake's orbit is 2.06 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

Ontake's orbit is determined by observations dating back to March 16, 1972. It was last officially observed on July 4, 2023. The IAU Minor Planet Center records 4,242 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 Ontake:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.182 AU
  • Eccentricity: 0.0343
  • Inclination: 8.66°
  • Longitude of Ascending Node: 140.39°
  • Argument of Periapsis: 130.78°
  • Mean Anomaly: 319.49°

Physical Characteristics

  • Diameter: 33.06100 km
  • Magnitude: 11.7
  • Albedo: 0.040

Derived Characteristics

  • Orbit Period: 2,070 days (5.67 years)
  • Avg. Orbit Speed: 16.72 km/s
  • Aphelion Distance: 3.29 AU
  • Perihelion Distance: 3.07 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Ontake 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.