Key Facts

  • Categorized as a Main-belt Asteroid
  • Comparable in size to the U.S. state of Rhode Island (50.12 km diameter)
  • Not a Near Earth Object
  • Not a Potentially Hazardous Object
  • See orbit simulation


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

Lameia orbits the sun every 1,420 days (3.89 years), coming as close as 2.31 AU and reaching as far as 2.64 AU from the sun. Lameia is about 50.1 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Rhode Island.

The rotation of Lameia has been observed. It completes a rotation on its axis every 11.91 hours.

No Close Approaches

Lameia's orbit is 1.29 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

Lameia's orbit is determined by observations dating back to June 6, 1885. It was last officially observed on July 7, 2022. The IAU Minor Planet Center records 4,178 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 Lameia:



   or view a random object

Orbital Elements

  • Epoch: 2459800.5 JD
  • Semi-major axis: 2.472 AU
  • Eccentricity: 0.0667
  • Inclination: 4.06°
  • Longitude of Ascending Node: 246.68°
  • Argument of Periapsis: 11.95°
  • Mean Anomaly: 101.36°

Physical Characteristics

  • Diameter: 50.12000 km
  • Magnitude: 10.35
  • Albedo: 0.062

Derived Characteristics

  • Orbit Period: 1,420 days (3.89 years)
  • Avg. Orbit Speed: 18.94 km/s
  • Aphelion Distance: 2.64 AU
  • Perihelion Distance: 2.31 AU
  • Rotation Period: 11.91 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Lameia 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.