Key Facts

Overview

Stephenriggs is a large asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Stephenriggs as potentially hazardous because its orbit does not bring it close to Earth.

Stephenriggs orbits the sun every 1,520 days (4.16 years), coming as close as 1.96 AU and reaching as far as 3.22 AU from the sun. Stephenriggs is about 14.2 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Cleveland, Ohio.

The rotation of Stephenriggs has been observed. It completes a rotation on its axis every 3.29 hours.

No Close Approaches

Stephenriggs's orbit is 0.95 AU from Earth's orbit at its closest point. This means that there is a very 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

Stephenriggs's orbit is determined by observations dating back to April 2, 1971. It was last officially observed on March 11, 2023. The IAU Minor Planet Center records 2,908 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 Stephenriggs:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.587 AU
  • Eccentricity: 0.2439
  • Inclination: 15.67°
  • Longitude of Ascending Node: 316.84°
  • Argument of Periapsis: 333.18°
  • Mean Anomaly: 154.12°

Physical Characteristics

  • Diameter: 14.20700 km
  • Magnitude: 12.95
  • Albedo: 0.071

Derived Characteristics

  • Orbit Period: 1,520 days (4.16 years)
  • Avg. Orbit Speed: 18.52 km/s
  • Aphelion Distance: 3.22 AU
  • Perihelion Distance: 1.96 AU
  • Rotation Period: 3.29 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Stephenriggs 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.