Key Facts

Overview

Beira is a large asteroid with an orbit that crosses the orbit of Mars. NASA JPL has not classified Beira as potentially hazardous because its orbit does not bring it close to Earth.

Beira orbits the sun every 1,650 days (4.52 years), coming as close as 1.40 AU and reaching as far as 4.07 AU from the sun. Based on its brightness and the way it reflects light, Beira is probably between 8.801 to 19.681 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the city of Cleveland, Ohio.

The rotation of Beira has been observed. It completes a rotation on its axis every 4.18 hours.

Beira's spectral type FX (Tholen) / B (SMASSII) indicates that it is likely to contain hydrogen, nitrogen, ammonia, and iron.

No Close Approaches

Beira's orbit is 0.64 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

Beira's orbit is determined by observations dating back to Aug. 20, 1935. It was last officially observed on May 19, 2023. The IAU Minor Planet Center records 2,237 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 Beira:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.737 AU
  • Eccentricity: 0.4887
  • Inclination: 26.67°
  • Longitude of Ascending Node: 323.37°
  • Argument of Periapsis: 84.06°
  • Mean Anomaly: 139.09°

Physical Characteristics

  • Diameter: ~11.363 km
  • Magnitude: 12.4
  • Spectral type (Tholen): FX
  • Spectral type (SMASS): B

Derived Characteristics

  • Orbit Period: 1,650 days (4.52 years)
  • Avg. Orbit Speed: 18.05 km/s
  • Aphelion Distance: 4.07 AU
  • Perihelion Distance: 1.40 AU
  • Rotation Period: 4.18 hours
  • Approx. Composition: hydrogen, nitrogen, ammonia, and iron.

Map Comparison

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Orbit Simulation

Sky Map

The position of Beira 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.