Key Facts


Ingeborg is a large asteroid with an orbit that crosses the orbit of Mars. NASA JPL has not classified Ingeborg as potentially hazardous because its orbit does not bring it close to Earth.

Ingeborg orbits the sun every 1,290 days (3.53 years), coming as close as 1.61 AU and reaching as far as 3.03 AU from the sun. Ingeborg is about 15.8 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Philadelphia.

The rotation of Ingeborg has been observed. It completes a rotation on its axis every 26.39 hours.

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

No Close Approaches

Ingeborg's orbit is 0.64 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

Ingeborg's orbit is determined by observations dating back to Nov. 19, 1894. It was last officially observed on Nov. 8, 2022. The IAU Minor Planet Center records 3,378 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 Ingeborg:



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Orbital Elements

  • Epoch: 2460000.5 JD
  • Semi-major axis: 2.32 AU
  • Eccentricity: 0.3056
  • Inclination: 23.21°
  • Longitude of Ascending Node: 212.84°
  • Argument of Periapsis: 147.03°
  • Mean Anomaly: 130.06°

Physical Characteristics

  • Diameter: 15.75100 km
  • Magnitude: 10.82
  • Albedo: 0.290
  • Spectral type (Tholen): S
  • Spectral type (SMASS): S

Derived Characteristics

  • Orbit Period: 1,290 days (3.53 years)
  • Avg. Orbit Speed: 19.57 km/s
  • Aphelion Distance: 3.03 AU
  • Perihelion Distance: 1.61 AU
  • Rotation Period: 26.39 hours
  • Approx. Composition: and .

Map Comparison

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Orbit Simulation

Sky Map

The position of Ingeborg 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.