Key Facts


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

Sarmiento orbits the sun every 979 days (2.68 years), coming as close as 1.73 AU and reaching as far as 2.13 AU from the sun. Sarmiento is about 2.9 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to Mount Everest.

The rotation of Sarmiento has been observed. It completes a rotation on its axis every 4.05 hours.

No Close Approaches

Sarmiento's orbit is 0.77 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

Sarmiento's orbit is determined by observations dating back to Nov. 11, 1971. It was last officially observed on April 15, 2023. The IAU Minor Planet Center records 2,939 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 Sarmiento:



   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.93 AU
  • Eccentricity: 0.1056
  • Inclination: 22.8°
  • Longitude of Ascending Node: 64.0°
  • Argument of Periapsis: 316.82°
  • Mean Anomaly: 128.38°

Physical Characteristics

  • Diameter: 2.85400 km
  • Magnitude: 14.07
  • Albedo: 0.466
  • Spectral type (Tholen): X

Derived Characteristics

  • Orbit Period: 979 days (2.68 years)
  • Avg. Orbit Speed: 21.45 km/s
  • Aphelion Distance: 2.13 AU
  • Perihelion Distance: 1.73 AU
  • Rotation Period: 4.05 hours

Map Comparison

Click to load map

Orbit Simulation

Sky Map

The position of Sarmiento 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.

Size Rendering

The above comparison is an artistic rendering that uses available data on the diameter of Sarmiento to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.