Key Facts

Overview

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

Arpola orbits the sun every 1,300 days (3.56 years), coming as close as 2.23 AU and reaching as far as 2.43 AU from the sun. Arpola is about 9.0 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

Arpola's spectral type None (Tholen) / Xc (SMASSII) indicates that it is likely to contain iron, nickel, cobalt, and platinum.

No Close Approaches

Arpola's orbit is 1.26 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

Arpola's orbit is determined by observations dating back to April 3, 1940. It was last officially observed on July 3, 2023. The IAU Minor Planet Center records 3,406 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 Arpola:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.328 AU
  • Eccentricity: 0.042
  • Inclination: 8.52°
  • Longitude of Ascending Node: 47.1°
  • Argument of Periapsis: 101.66°
  • Mean Anomaly: 220.97°

Physical Characteristics

  • Diameter: 9.02000 km
  • Magnitude: 12.86
  • Albedo: 0.190
  • Spectral type (SMASS): Xc

Derived Characteristics

  • Orbit Period: 1,300 days (3.56 years)
  • Avg. Orbit Speed: 19.48 km/s
  • Aphelion Distance: 2.43 AU
  • Perihelion Distance: 2.23 AU
  • Approx. Composition: iron, nickel, cobalt, and platinum.

Map Comparison

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Orbit Simulation

Sky Map

The position of Arpola 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.