613986 (2008 JG)

Very small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 613986 (2008 JG)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a football field
  • Will pass within 13,852,348 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

613986 (2008 JG) is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2008 JG as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2008 JG orbits the sun every 394 days (1.08 years), coming as close as 0.74 AU and reaching as far as 1.36 AU from the sun. Based on its brightness and the way it reflects light, 2008 JG is probably between 0.179 to 0.400 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

Close Approaches

2008 JG's orbit is 0.05 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.

2008 JG has 21 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
June 24, 2021 13,852,348 10.880
Jan. 10, 2024 13,409,653 7.789
July 1, 2035 12,871,338 8.908
Jan. 9, 2038 7,643,206 9.297
June 26, 2049 12,502,230 10.199
Jan. 11, 2052 15,998,331 7.324
Jan. 15, 2067 24,743,486 14.244
June 30, 2078 12,517,704 9.082
Jan. 9, 2081 11,816,244 8.058
Jan. 16, 2096 25,186,209 14.327
July 9, 2107 17,379,668 7.710
Jan. 12, 2110 8,437,963 10.564
July 27, 2121 25,905,494 7.433
Jan. 16, 2124 24,041,488 14.148
June 22, 2134 20,914,150 12.843
Jan. 14, 2137 21,364,674 6.695
July 6, 2148 15,084,603 8.166
Jan. 13, 2151 10,113,236 11.089
June 20, 2175 26,461,625 14.032
July 5, 2190 13,974,081 8.358
Jan. 11, 2193 8,953,811 8.648

Images and Observations

2008 JG's orbit is determined by observations dating back to May 1, 2008. It was last officially observed on April 26, 2023. The IAU Minor Planet Center records 215 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 2008 JG:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.052 AU
  • Eccentricity: 0.296
  • Inclination: 7.91°
  • Longitude of Ascending Node: 128.77°
  • Argument of Periapsis: 242.38°
  • Mean Anomaly: 318.71°

Physical Characteristics

  • Diameter: ~0.231 km
  • Magnitude: 20.86

Derived Characteristics

  • Orbit Period: 394 days (1.08 years)
  • Avg. Orbit Speed: 29.05 km/s
  • Aphelion Distance: 1.36 AU
  • Perihelion Distance: 0.74 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 613986 (2008 JG) 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 2008 JG 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.