Key Facts


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

Tercidina orbits the sun every 1,300 days (3.56 years), coming as close as 2.18 AU and reaching as far as 2.47 AU from the sun. Tercidina is about 90.2 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Delaware.

The rotation of Tercidina has been observed. It completes a rotation on its axis every 12.37 hours.

Tercidina's spectral type C (Tholen) / Ch (SMASSII) indicates that it is likely to contain water, iron, nickel, cobalt, nitrogen, and ammonia.

No Close Approaches

Tercidina's orbit is 1.21 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

Tercidina's orbit is determined by observations dating back to Nov. 24, 1892. It was last officially observed on July 7, 2021. The IAU Minor Planet Center records 3,187 observations used to determine its orbit.

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

View asteroid Tercidina 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 Tercidina:



   or view a random object

Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 2.325 AU
  • Eccentricity: 0.0617
  • Inclination: 9.74°
  • Longitude of Ascending Node: 212.59°
  • Argument of Periapsis: 231.26°
  • Mean Anomaly: 66.87°

Physical Characteristics

  • Diameter: 90.24300 km
  • Magnitude: 8.93
  • Albedo: 0.052
  • Spectral type (Tholen): C
  • Spectral type (SMASS): Ch

Derived Characteristics

  • Orbit Period: 1,300 days (3.56 years)
  • Avg. Orbit Speed: 19.46 km/s
  • Aphelion Distance: 2.47 AU
  • Perihelion Distance: 2.18 AU
  • Rotation Period: 12.37 hours
  • Approx. Composition: water, iron, nickel, cobalt, nitrogen, and ammonia.

Map Comparison

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Orbit Simulation

Sky Map

The position of Tercidina 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.