Key Facts

Overview

119942 (2002 GJ129) is a mid-sized asteroid that orbits between Mars and Jupiter in the outer reaches of the main asteroid belt. NASA JPL has not classified 2002 GJ129 as potentially hazardous because its orbit does not bring it close to Earth.

2002 GJ129 orbits the sun every 2,900 days (7.94 years), coming as close as 3.51 AU and reaching as far as 4.45 AU from the sun. 2002 GJ129 is about 7.2 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

The rotation of 2002 GJ129 has been observed. It completes a rotation on its axis every 5.12 hours.

No Close Approaches

2002 GJ129's orbit is 2.50 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

2002 GJ129's orbit is determined by observations dating back to April 4, 2002. It was last officially observed on Jan. 10, 2023. The IAU Minor Planet Center records 761 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 2002 GJ129:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.982 AU
  • Eccentricity: 0.1184
  • Inclination: 4.04°
  • Longitude of Ascending Node: 229.42°
  • Argument of Periapsis: 61.71°
  • Mean Anomaly: 170.89°

Physical Characteristics

  • Diameter: 7.23100 km
  • Magnitude: 14.17
  • Albedo: 0.085

Derived Characteristics

  • Orbit Period: 2,900 days (7.94 years)
  • Avg. Orbit Speed: 14.94 km/s
  • Aphelion Distance: 4.45 AU
  • Perihelion Distance: 3.51 AU
  • Rotation Period: 5.12 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 119942 (2002 GJ129) 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.