Key Facts

Overview

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

Juhani orbits the sun every 1,360 days (3.72 years), coming as close as 1.96 AU and reaching as far as 2.84 AU from the sun. Juhani is about 9.5 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

The rotation of Juhani has been observed. It completes a rotation on its axis every 344.60 hours.

No Close Approaches

Juhani's orbit is 0.96 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

Juhani's orbit is determined by observations dating back to Oct. 1, 1929. It was last officially observed on May 3, 2023. The IAU Minor Planet Center records 3,763 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 Juhani:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.397 AU
  • Eccentricity: 0.184
  • Inclination: 2.81°
  • Longitude of Ascending Node: 347.42°
  • Argument of Periapsis: 37.5°
  • Mean Anomaly: 108.86°

Physical Characteristics

  • Diameter: 9.50700 km
  • Magnitude: 13.29
  • Albedo: 0.028

Derived Characteristics

  • Orbit Period: 1,360 days (3.72 years)
  • Avg. Orbit Speed: 19.17 km/s
  • Aphelion Distance: 2.84 AU
  • Perihelion Distance: 1.96 AU
  • Rotation Period: 344.60 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Juhani 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.