Key Facts

Overview

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

Dacke orbits the sun every 2,110 days (5.78 years), coming as close as 2.69 AU and reaching as far as 3.75 AU from the sun. Dacke is about 24.4 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.

The rotation of Dacke has been observed. It completes a rotation on its axis every 13.56 hours.

No Close Approaches

Dacke'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

Dacke's orbit is determined by observations dating back to July 19, 1979. It was last officially observed on June 16, 2023. The IAU Minor Planet Center records 3,764 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 Dacke:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.216 AU
  • Eccentricity: 0.1649
  • Inclination: 10.14°
  • Longitude of Ascending Node: 325.48°
  • Argument of Periapsis: 354.99°
  • Mean Anomaly: 251.55°

Physical Characteristics

  • Diameter: 24.41800 km
  • Magnitude: 11.6
  • Albedo: 0.089

Derived Characteristics

  • Orbit Period: 2,110 days (5.78 years)
  • Avg. Orbit Speed: 16.58 km/s
  • Aphelion Distance: 3.75 AU
  • Perihelion Distance: 2.69 AU
  • Rotation Period: 13.56 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Dacke 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.