Key Facts

  • Categorized as a Jupiter Trojan
  • Comparable in size to the city of Philadelphia (16.65 km diameter)
  • Not a Near Earth Object
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

99327 (2001 UP32) is a large asteroid that shares Jupiter's orbit around the sun. NASA JPL has not classified 2001 UP32 as potentially hazardous because its orbit does not bring it close to Earth.

2001 UP32 orbits the sun every 4,230 days (11.58 years), coming as close as 4.98 AU and reaching as far as 5.26 AU from the sun. 2001 UP32 is about 16.7 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Philadelphia.

No Close Approaches

2001 UP32's orbit is 3.97 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

2001 UP32's orbit is determined by observations dating back to March 27, 1996. It was last officially observed on Sept. 21, 2022. The IAU Minor Planet Center records 791 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 2001 UP32:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 5.117 AU
  • Eccentricity: 0.027
  • Inclination: 5.12°
  • Longitude of Ascending Node: 58.22°
  • Argument of Periapsis: 257.17°
  • Mean Anomaly: 29.37°

Physical Characteristics

  • Diameter: 16.65400 km
  • Magnitude: 12.66
  • Albedo: 0.092

Derived Characteristics

  • Orbit Period: 4,230 days (11.58 years)
  • Avg. Orbit Speed: 13.16 km/s
  • Aphelion Distance: 5.26 AU
  • Perihelion Distance: 4.98 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 99327 (2001 UP32) 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.