Key Facts

Overview

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

Massar orbits the sun every 1,940 days (5.31 years), coming as close as 2.51 AU and reaching as far as 3.58 AU from the sun. Massar is about 8.7 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

No Close Approaches

Massar's orbit is 1.52 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

Massar's orbit is determined by observations dating back to Nov. 16, 1979. It was last officially observed on Feb. 18, 2023. The IAU Minor Planet Center records 1,722 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 Massar:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.048 AU
  • Eccentricity: 0.1756
  • Inclination: 0.52°
  • Longitude of Ascending Node: 340.56°
  • Argument of Periapsis: 44.59°
  • Mean Anomaly: 88.61°

Physical Characteristics

  • Diameter: 8.68400 km
  • Magnitude: 14.34
  • Albedo: 0.054

Derived Characteristics

  • Orbit Period: 1,940 days (5.31 years)
  • Avg. Orbit Speed: 17.09 km/s
  • Aphelion Distance: 3.58 AU
  • Perihelion Distance: 2.51 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of Massar 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.