Key Facts


30512 (2001 HO8) is a large asteroid that orbits between Mars and Jupiter in the outer reaches of the main asteroid belt. NASA JPL has not classified 2001 HO8 as potentially hazardous because its orbit does not bring it close to Earth.

2001 HO8 orbits the sun every 2,750 days (7.53 years), coming as close as 2.60 AU and reaching as far as 5.09 AU from the sun. 2001 HO8 is about 17.6 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Philadelphia.

No Close Approaches

2001 HO8's orbit is 1.67 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

2001 HO8's orbit is determined by observations dating back to Jan. 28, 1954. It was last officially observed on Nov. 16, 2020. The IAU Minor Planet Center records 1,128 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 2001 HO8:



   or view a random object

Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 3.845 AU
  • Eccentricity: 0.3229
  • Inclination: 25.71°
  • Longitude of Ascending Node: 128.46°
  • Argument of Periapsis: 43.39°
  • Mean Anomaly: 227.18°

Physical Characteristics

  • Diameter: 17.61200 km
  • Magnitude: 12.7
  • Albedo: 0.057

Derived Characteristics

  • Orbit Period: 2,750 days (7.53 years)
  • Avg. Orbit Speed: 15.21 km/s
  • Aphelion Distance: 5.09 AU
  • Perihelion Distance: 2.60 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 30512 (2001 HO8) 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.