Key Facts

Overview

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

Chiayi orbits the sun every 1,320 days (3.61 years), coming as close as 1.89 AU and reaching as far as 2.83 AU from the sun. Based on its brightness and the way it reflects light, Chiayi is probably between 0.872 to 1.950 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the Golden Gate Bridge.

No Close Approaches

Chiayi's orbit is 0.91 AU from Earth's orbit at its closest point. This means that there is a very 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

Chiayi's orbit is determined by observations dating back to Jan. 4, 2000. It was last officially observed on March 23, 2022. The IAU Minor Planet Center records 318 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 Chiayi:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.358 AU
  • Eccentricity: 0.1988
  • Inclination: 4.6°
  • Longitude of Ascending Node: 354.01°
  • Argument of Periapsis: 104.95°
  • Mean Anomaly: 197.47°

Physical Characteristics

  • Diameter: ~1.126 km
  • Magnitude: 17.42

Derived Characteristics

  • Orbit Period: 1,320 days (3.61 years)
  • Avg. Orbit Speed: 19.43 km/s
  • Aphelion Distance: 2.83 AU
  • Perihelion Distance: 1.89 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Chiayi 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.

Size Rendering

The above comparison is an artistic rendering that uses available data on the diameter of Chiayi to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.