Key Facts

Overview

Hidalgo is a relatively small asteroid with an orbit between Jupiter and Neptune. NASA JPL has not classified Hidalgo as potentially hazardous because its orbit does not bring it close to Earth.

Hidalgo orbits the sun every 5,024 days (13.76 years), coming as close as 1.95 AU and reaching as far as 9.53 AU from the sun. Hidalgo is about 38.0 kilometers in diameter, making it larger than most asteroids, comparable in size to the city of Houston.

The rotation of Hidalgo has been observed. It completes a rotation on its axis every 10.06 days.

Hidalgo's spectral type D (Tholen) / (SMASSII) indicates that it is likely to contain water.

No Close Approaches

Hidalgo's orbit is 1.15 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

Hidalgo's orbit is determined by observations dating back to Oct. 31, 1920. It was last officially observed on May 11, 2019. The IAU Minor Planet Center records 1,287 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 Hidalgo:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 5.74095765453 AU
  • Eccentricity: 0.660781276185
  • Inclination: 42.5207038821°
  • Longitude of Ascending Node: 21.4199563304°
  • Argument of Periapsis: 56.6508553607°
  • Mean Anomaly: 13.0778236839°

Physical Characteristics

  • Diameter: 38.00000 km
  • Magnitude: 10.77
  • Albedo: 0.06
  • Spectral type (Tholen): D

Derived Characteristics

  • Orbit Period: 5,024 days (13.76 years)
  • Avg. Orbit Speed: 12.43 km/s
  • Aphelion Distance: 9.53 AU
  • Perihelion Distance: 1.95 AU
  • Rotation Period: 10.06 days
  • Approx. Composition: water.

Size Comparison

Orbit Simulation

Sky Map

The position of Hidalgo 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.