Key Facts


138359 (2000 GX127) is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2000 GX127 as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

2000 GX127 orbits the sun every 445 days (1.22 years), coming as close as 0.73 AU and reaching as far as 1.55 AU from the sun. 2000 GX127 is about 1.1 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the Golden Gate Bridge.

The rotation of 2000 GX127 has been observed. It completes a rotation on its axis every 3.69 hours.

No Close Approaches

2000 GX127's orbit is 0.26 AU from Earth's orbit at its closest point. This means that there is a 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

2000 GX127's orbit is determined by observations dating back to April 10, 2000. It was last officially observed on May 31, 2022. The IAU Minor Planet Center records 587 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 2000 GX127:



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Orbital Elements

  • Epoch: 2459800.5 JD
  • Semi-major axis: 1.141 AU
  • Eccentricity: 0.3613
  • Inclination: 20.24°
  • Longitude of Ascending Node: 43.99°
  • Argument of Periapsis: 4.73°
  • Mean Anomaly: 259.04°

Physical Characteristics

  • Diameter: 1.08500 km
  • Magnitude: 18.02
  • Albedo: 0.095

Derived Characteristics

  • Orbit Period: 445 days (1.22 years)
  • Avg. Orbit Speed: 27.89 km/s
  • Aphelion Distance: 1.55 AU
  • Perihelion Distance: 0.73 AU
  • Rotation Period: 3.69 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 138359 (2000 GX127) 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.

Size Rendering

The above comparison is an artistic rendering that uses available data on the diameter of 2000 GX127 to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.