152978 (2000 GJ147)

Small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 152978 (2000 GJ147)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge (0.53 km diameter)
  • Will pass within 21,789,776 km of Earth in 2084
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

152978 (2000 GJ147) is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2000 GJ147 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2000 GJ147 orbits the sun every 458 days (1.25 years), coming as close as 0.89 AU and reaching as far as 1.44 AU from the sun. 2000 GJ147 is about 0.5 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, comparable in size to the Golden Gate Bridge.

The rotation of 2000 GJ147 has been observed. It completes a rotation on its axis every 10.01 hours.

Close Approaches

2000 GJ147's orbit is 0.03 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.

2000 GJ147 has 9 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
May 9, 2084 21,789,776 17.030
May 13, 2089 12,276,824 15.909
May 16, 2094 5,545,049 15.157
May 17, 2099 3,873,465 14.899
May 17, 2104 3,968,921 14.925
May 16, 2109 6,191,299 15.238
May 14, 2114 13,096,898 15.997
May 11, 2119 22,933,612 17.174
May 30, 2195 27,356,863 13.425

Images and Observations

2000 GJ147's orbit is determined by observations dating back to April 13, 2000. It was last officially observed on Jan. 16, 2021. The IAU Minor Planet Center records 688 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 GJ147:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.162 AU
  • Eccentricity: 0.2367
  • Inclination: 25.01°
  • Longitude of Ascending Node: 57.85°
  • Argument of Periapsis: 240.8°
  • Mean Anomaly: 179.38°

Physical Characteristics

  • Diameter: 0.53100 km
  • Magnitude: 19.57
  • Albedo: 0.109
  • Spectral type (SMASS): S:

Derived Characteristics

  • Orbit Period: 458 days (1.25 years)
  • Avg. Orbit Speed: 27.60 km/s
  • Aphelion Distance: 1.44 AU
  • Perihelion Distance: 0.89 AU
  • Rotation Period: 10.01 hours

Map Comparison

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Orbit Simulation

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Sky Map

The position of 152978 (2000 GJ147) 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 below comparison is an artistic rendering that uses available data on the diameter of 2000 GJ147 to create an approximate landscape rendering with New York City in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.