Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to the U.S. Capitol building
  • Will pass within 21,569,504 km of Earth in 2020
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2008 EE5 is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2008 EE5 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2008 EE5 orbits the sun every 335 days (0.92 years), coming as close as 0.88 AU and reaching as far as 1.01 AU from the sun. Based on its brightness and the way it reflects light, 2008 EE5 is probably between 0.305 to 0.682 kilometers in diameter, making it small in absolute terms, but larger than 90% of asteroids, very roughly comparable in size to the U.S. Capitol building.

Close Approaches

2008 EE5's orbit is 0.02 AU from Earth's orbit at its closest point. This means that there is an wide berth between this asteroid and Earth at all times.

2008 EE5 has 25 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Feb. 14, 2020 21,569,504 22.983
Aug. 11, 2020 21,020,805 23.980
Aug. 18, 2031 22,199,978 23.968
Feb. 8, 2043 13,592,006 22.581
Feb. 10, 2054 3,655,817 22.499
Feb. 13, 2065 20,977,470 22.966
Aug. 11, 2065 21,105,515 23.976
Aug. 18, 2076 22,840,669 23.978
Feb. 5, 2077 29,761,781 23.136
Feb. 9, 2088 10,955,467 22.527
Feb. 12, 2099 8,481,309 22.568
Aug. 7, 2099 28,384,772 24.326
Feb. 16, 2110 29,292,667 23.382
Aug. 16, 2110 19,749,512 23.909
Aug. 23, 2121 29,269,228 24.229
Feb. 8, 2122 19,978,659 22.753
Feb. 11, 2133 3,121,672 22.486
Feb. 15, 2144 18,445,494 22.861
Aug. 11, 2144 22,272,160 24.029
Aug. 19, 2155 21,698,780 23.949
Feb. 10, 2167 11,431,474 22.539
Feb. 13, 2178 8,672,940 22.579
Aug. 8, 2178 28,271,263 24.320
Feb. 16, 2189 28,791,964 23.357
Aug. 15, 2189 19,702,130 23.906

Images and Observations

2008 EE5's orbit is determined by observations dating back to March 4, 2008. It was last officially observed on Feb. 22, 2020. The IAU Minor Planet Center records 181 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 EE5:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 0.9448 AU
  • Eccentricity: 0.0716
  • Inclination: 44.81°
  • Longitude of Ascending Node: 321.27°
  • Argument of Periapsis: 20.08°
  • Mean Anomaly: 265.36°

Physical Characteristics

  • Diameter: ~0.394 km
  • Magnitude: 19.7

Derived Characteristics

  • Orbit Period: 335 days (0.92 years)
  • Avg. Orbit Speed: 30.68 km/s
  • Aphelion Distance: 1.01 AU
  • Perihelion Distance: 0.88 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 2008 EE5 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.