Key Facts

Overview

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

Ehrsson orbits the sun every 1,370 days (3.75 years), coming as close as 1.87 AU and reaching as far as 2.96 AU from the sun. Ehrsson is about 7.7 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

The rotation of Ehrsson has been observed. It completes a rotation on its axis every 78.00 hours.

No Close Approaches

Ehrsson's orbit is 0.87 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

Ehrsson's orbit is determined by observations dating back to March 2, 1976. It was last officially observed on July 1, 2023. The IAU Minor Planet Center records 4,110 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 Ehrsson:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.413 AU
  • Eccentricity: 0.2268
  • Inclination: 2.24°
  • Longitude of Ascending Node: 348.15°
  • Argument of Periapsis: 187.52°
  • Mean Anomaly: 244.99°

Physical Characteristics

  • Diameter: 7.68000 km
  • Magnitude: 12.66
  • Albedo: 0.360
  • Spectral type (Tholen): SG

Derived Characteristics

  • Orbit Period: 1,370 days (3.75 years)
  • Avg. Orbit Speed: 19.16 km/s
  • Aphelion Distance: 2.96 AU
  • Perihelion Distance: 1.87 AU
  • Rotation Period: 78.00 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Ehrsson 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.