Key Facts


86047 (1999 OY3) is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 1999 OY3 as potentially hazardous because its orbit does not bring it close to Earth.

1999 OY3 orbits the sun every 107,000 days (292.95 years), coming as close as 36.61 AU and reaching as far as 51.81 AU from the sun. Based on its brightness and the way it reflects light, 1999 OY3 is probably between 116.561 to 260.639 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of New Jersey.

The rotation of 1999 OY3 has been observed. It completes a rotation on its axis every 18.02 hours.

No Close Approaches

1999 OY3's orbit is 35.60 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

1999 OY3's orbit is determined by observations dating back to July 18, 1999. It was last officially observed on June 27, 2020. The IAU Minor Planet Center records 112 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 1999 OY3:



   or view a random object

Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 44.21 AU
  • Eccentricity: 0.172
  • Inclination: 24.16°
  • Longitude of Ascending Node: 301.72°
  • Argument of Periapsis: 307.52°
  • Mean Anomaly: 65.66°

Physical Characteristics

  • Diameter: ~150.480 km
  • Magnitude: 6.79

Derived Characteristics

  • Orbit Period: 107,000 days (292.95 years)
  • Avg. Orbit Speed: 4.49 km/s
  • Aphelion Distance: 51.81 AU
  • Perihelion Distance: 36.61 AU
  • Rotation Period: 18.02 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 86047 (1999 OY3) 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.