Key Facts

Overview

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

Daishi orbits the sun every 2,040 days (5.59 years), coming as close as 2.49 AU and reaching as far as 3.80 AU from the sun. Daishi is about 7.7 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

No Close Approaches

Daishi's orbit is 1.49 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

Daishi's orbit is determined by observations dating back to Nov. 21, 1949. It was last officially observed on May 31, 2023. The IAU Minor Planet Center records 1,693 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 Daishi:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.145 AU
  • Eccentricity: 0.2086
  • Inclination: 1.59°
  • Longitude of Ascending Node: 173.58°
  • Argument of Periapsis: 222.39°
  • Mean Anomaly: 105.83°

Physical Characteristics

  • Diameter: 7.68000 km
  • Magnitude: 14.08
  • Albedo: 0.131

Derived Characteristics

  • Orbit Period: 2,040 days (5.59 years)
  • Avg. Orbit Speed: 16.77 km/s
  • Aphelion Distance: 3.80 AU
  • Perihelion Distance: 2.49 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Daishi 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.