Key Facts

Overview

9513 (1971 UN) is a large asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified 1971 UN as potentially hazardous because its orbit does not bring it close to Earth.

1971 UN orbits the sun every 1,400 days (3.83 years), coming as close as 1.87 AU and reaching as far as 3.03 AU from the sun. 1971 UN is about 10.1 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Boston.

No Close Approaches

1971 UN's orbit is 0.88 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

1971 UN's orbit is determined by observations dating back to Nov. 3, 1948. It was last officially observed on May 21, 2023. The IAU Minor Planet Center records 3,273 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 1971 UN:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.454 AU
  • Eccentricity: 0.2363
  • Inclination: 7.72°
  • Longitude of Ascending Node: 37.03°
  • Argument of Periapsis: 296.06°
  • Mean Anomaly: 220.99°

Physical Characteristics

  • Diameter: 10.09200 km
  • Magnitude: 13.59
  • Albedo: 0.091

Derived Characteristics

  • Orbit Period: 1,400 days (3.83 years)
  • Avg. Orbit Speed: 19.07 km/s
  • Aphelion Distance: 3.03 AU
  • Perihelion Distance: 1.87 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 9513 (1971 UN) 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.