Key Facts

Overview

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

Fennia orbits the sun every 954 days (2.61 years), coming as close as 1.84 AU and reaching as far as 1.95 AU from the sun. Fennia is about 6.6 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

The rotation of Fennia has been observed. It completes a rotation on its axis every 4.41 days.

No Close Approaches

Fennia's orbit is 0.88 AU from Earth's orbit at its closest point. This means that there is an 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

Fennia's orbit is determined by observations dating back to April 2, 1938. It was last officially observed on June 11, 2020. The IAU Minor Planet Center records 2,115 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 Fennia:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 1.897 AU
  • Eccentricity: 0.0283
  • Inclination: 23.67°
  • Longitude of Ascending Node: 7.06°
  • Argument of Periapsis: 254.5°
  • Mean Anomaly: 90.38°

Physical Characteristics

  • Diameter: 6.57300 km
  • Magnitude: 12.6
  • Albedo: 0.409
  • Spectral type (Tholen): S

Derived Characteristics

  • Orbit Period: 954 days (2.61 years)
  • Avg. Orbit Speed: 21.63 km/s
  • Aphelion Distance: 1.95 AU
  • Perihelion Distance: 1.84 AU
  • Rotation Period: 4.41 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Fennia 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.