Key Facts


309139 (2006 XQ51) is a large asteroid with an orbit between Jupiter and Neptune. NASA JPL has not classified 2006 XQ51 as potentially hazardous because its orbit does not bring it close to Earth.

2006 XQ51 orbits the sun every 23,000 days (62.97 years), coming as close as 9.82 AU and reaching as far as 21.80 AU from the sun. 2006 XQ51 is about 39.1 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Houston.

No Close Approaches

2006 XQ51's orbit is 8.90 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

2006 XQ51's orbit is determined by observations dating back to Aug. 5, 2001. It was last officially observed on March 10, 2011. The IAU Minor Planet Center records 71 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 2006 XQ51:



   or view a random object

Orbital Elements

  • Epoch: 2459800.5 JD
  • Semi-major axis: 15.81 AU
  • Eccentricity: 0.3789
  • Inclination: 31.62°
  • Longitude of Ascending Node: 233.8°
  • Argument of Periapsis: 134.34°
  • Mean Anomaly: 112.2°

Physical Characteristics

  • Diameter: 39.10000 km
  • Magnitude: 9.96
  • Albedo: 0.139

Derived Characteristics

  • Orbit Period: 23,000 days (62.97 years)
  • Avg. Orbit Speed: 7.48 km/s
  • Aphelion Distance: 21.80 AU
  • Perihelion Distance: 9.82 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 309139 (2006 XQ51) 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.