Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 10,054,848 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation


285571 (2000 PQ9) is a small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2000 PQ9 as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

2000 PQ9 orbits the sun every 960 days (2.63 years), coming as close as 1.08 AU and reaching as far as 2.73 AU from the sun. Based on its brightness and the way it reflects light, 2000 PQ9 is probably between 0.495 to 1.107 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, very roughly comparable in size to the Golden Gate Bridge.

The rotation of 2000 PQ9 has been observed. It completes a rotation on its axis every 3.74 hours.

Close Approaches

2000 PQ9's orbit is 0.07 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.

2000 PQ9 has 4 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
July 21, 2021 10,054,848 8.949
July 31, 2042 17,791,206 9.279
July 20, 2113 11,003,664 9.112
July 28, 2134 13,143,830 8.948

Images and Observations

2000 PQ9's orbit is determined by observations dating back to Aug. 9, 2000. It was last officially observed on Jan. 23, 2023. The IAU Minor Planet Center records 7,306 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 2000 PQ9:



   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.904 AU
  • Eccentricity: 0.4315
  • Inclination: 13.47°
  • Longitude of Ascending Node: 297.19°
  • Argument of Periapsis: 6.99°
  • Mean Anomaly: 291.98°

Physical Characteristics

  • Diameter: ~0.639 km
  • Magnitude: 18.65

Derived Characteristics

  • Orbit Period: 960 days (2.63 years)
  • Avg. Orbit Speed: 21.58 km/s
  • Aphelion Distance: 2.73 AU
  • Perihelion Distance: 1.08 AU
  • Rotation Period: 3.74 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 285571 (2000 PQ9) 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 2000 PQ9 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.