Key Facts

Overview

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

Erda orbits the sun every 2,010 days (5.50 years), coming as close as 2.77 AU and reaching as far as 3.46 AU from the sun. Erda is about 28.3 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.

The rotation of Erda has been observed. It completes a rotation on its axis every 4.69 hours.

No Close Approaches

Erda's orbit is 1.79 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

Erda's orbit is determined by observations dating back to May 12, 1907. It was last officially observed on July 2, 2023. The IAU Minor Planet Center records 6,272 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 Erda:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.117 AU
  • Eccentricity: 0.1101
  • Inclination: 12.74°
  • Longitude of Ascending Node: 190.59°
  • Argument of Periapsis: 116.91°
  • Mean Anomaly: 4.34°

Physical Characteristics

  • Diameter: 28.30900 km
  • Magnitude: 9.78
  • Albedo: 0.120

Derived Characteristics

  • Orbit Period: 2,010 days (5.50 years)
  • Avg. Orbit Speed: 16.87 km/s
  • Aphelion Distance: 3.46 AU
  • Perihelion Distance: 2.77 AU
  • Rotation Period: 4.69 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Erda 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.