Key Facts

Overview

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

Holmia orbits the sun every 1,690 days (4.63 years), coming as close as 2.41 AU and reaching as far as 3.14 AU from the sun. Holmia is about 27.8 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.

The rotation of Holmia has been observed. It completes a rotation on its axis every 4.45 hours.

Holmia's spectral type S (Tholen) / S (SMASSII) indicates that it is likely to contain and .

No Close Approaches

Holmia's orbit is 1.42 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

Holmia's orbit is determined by observations dating back to Feb. 2, 1894. It was last officially observed on Feb. 17, 2023. The IAU Minor Planet Center records 4,090 observations used to determine its orbit.

Scientists have been able to determine this object's shape:

View asteroid Holmia in 3D.

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 Holmia:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.776 AU
  • Eccentricity: 0.1302
  • Inclination: 7.01°
  • Longitude of Ascending Node: 232.35°
  • Argument of Periapsis: 156.64°
  • Mean Anomaly: 47.18°

Physical Characteristics

  • Diameter: 27.83100 km
  • Magnitude: 9.87
  • Albedo: 0.339
  • Spectral type (Tholen): S
  • Spectral type (SMASS): S

Derived Characteristics

  • Orbit Period: 1,690 days (4.63 years)
  • Avg. Orbit Speed: 17.87 km/s
  • Aphelion Distance: 3.14 AU
  • Perihelion Distance: 2.41 AU
  • Rotation Period: 4.45 hours
  • Approx. Composition: and .

Map Comparison

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Orbit Simulation

Sky Map

The position of Holmia 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.