Key Facts


525462 (2005 EO304) is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 2005 EO304 as potentially hazardous because its orbit does not bring it close to Earth.

2005 EO304 orbits the sun every 112,000 days (306.64 years), coming as close as 42.44 AU and reaching as far as 48.72 AU from the sun. Based on its brightness and the way it reflects light, 2005 EO304 is probably between 152.249 to 340.440 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Maryland.

No Close Approaches

2005 EO304's orbit is 41.40 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

2005 EO304's orbit is determined by observations dating back to May 4, 2000. It was last officially observed on April 19, 2020. The IAU Minor Planet Center records 117 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 2005 EO304:



   or view a random object

Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 45.58 AU
  • Eccentricity: 0.0688
  • Inclination: 3.41°
  • Longitude of Ascending Node: 93.97°
  • Argument of Periapsis: 152.19°
  • Mean Anomaly: 329.6°

Physical Characteristics

  • Diameter: ~196.553 km
  • Magnitude: 6.21

Derived Characteristics

  • Orbit Period: 112,000 days (306.64 years)
  • Avg. Orbit Speed: 4.43 km/s
  • Aphelion Distance: 48.72 AU
  • Perihelion Distance: 42.44 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 525462 (2005 EO304) 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.