Key Facts

Overview

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

Ichikawa orbits the sun every 2,040 days (5.59 years), coming as close as 2.56 AU and reaching as far as 3.73 AU from the sun. Ichikawa is about 14.8 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Baltimore.

The rotation of Ichikawa has been observed. It completes a rotation on its axis every 20.40 hours.

No Close Approaches

Ichikawa's orbit is 1.55 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

Ichikawa's orbit is determined by observations dating back to March 16, 1953. It was last officially observed on Dec. 22, 2022. The IAU Minor Planet Center records 3,156 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 Ichikawa:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.146 AU
  • Eccentricity: 0.1862
  • Inclination: 2.54°
  • Longitude of Ascending Node: 90.7°
  • Argument of Periapsis: 250.67°
  • Mean Anomaly: 55.59°

Physical Characteristics

  • Diameter: 14.78900 km
  • Magnitude: 12.86
  • Albedo: 0.117

Derived Characteristics

  • Orbit Period: 2,040 days (5.59 years)
  • Avg. Orbit Speed: 16.78 km/s
  • Aphelion Distance: 3.73 AU
  • Perihelion Distance: 2.56 AU
  • Rotation Period: 20.40 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Ichikawa 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.