Key Facts

Overview

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

Hagar orbits the sun every 1,580 days (4.33 years), coming as close as 2.19 AU and reaching as far as 3.11 AU from the sun. Based on its brightness and the way it reflects light, Hagar is probably between 9.259 to 20.703 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the city of Cleveland, Ohio.

The rotation of Hagar has been observed. It completes a rotation on its axis every 4.85 hours.

No Close Approaches

Hagar'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

Hagar's orbit is determined by observations dating back to June 17, 1909. It was last officially observed on Feb. 19, 2023. The IAU Minor Planet Center records 3,960 observations used to determine its orbit.

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

View asteroid Hagar 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 Hagar:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.652 AU
  • Eccentricity: 0.1737
  • Inclination: 11.51°
  • Longitude of Ascending Node: 190.76°
  • Argument of Periapsis: 104.84°
  • Mean Anomaly: 139.42°

Physical Characteristics

  • Diameter: ~11.953 km
  • Magnitude: 12.29

Derived Characteristics

  • Orbit Period: 1,580 days (4.33 years)
  • Avg. Orbit Speed: 18.26 km/s
  • Aphelion Distance: 3.11 AU
  • Perihelion Distance: 2.19 AU
  • Rotation Period: 4.85 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of Hagar 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.