Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to a football field
  • Will pass within 5,093,603 km of Earth in 2020
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

163348 (2002 NN4) is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2002 NN4 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2002 NN4 orbits the sun every 300 days (0.82 years), coming as close as 0.50 AU and reaching as far as 1.26 AU from the sun. Based on its brightness and the way it reflects light, 2002 NN4 is probably between 0.254 to 0.568 kilometers in diameter, making it small in absolute terms, but larger than 90% of asteroids, very roughly comparable in size to a football field.

The rotation of 2002 NN4 has been observed. It completes a rotation on its axis every 14.50 days.

Close Approaches

2002 NN4's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

2002 NN4 has 30 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
June 6, 2020 5,093,603 11.146
June 7, 2029 8,805,427 13.781
Sept. 11, 2030 19,828,289 14.658
June 10, 2038 25,417,034 17.185
Sept. 13, 2039 14,478,347 11.326
Sept. 6, 2048 22,964,773 8.957
June 18, 2052 24,362,263 8.955
June 7, 2061 11,421,379 10.065
June 6, 2070 1,519,122 12.316
Sept. 10, 2071 24,041,337 15.791
Sept. 9, 2080 21,128,368 9.189
June 13, 2084 20,840,148 9.059
June 7, 2093 10,604,981 14.148
Sept. 12, 2094 17,325,739 13.812
Sept. 4, 2103 25,832,262 8.755
June 11, 2107 15,362,193 9.519
June 9, 2116 19,057,974 15.872
Sept. 14, 2117 14,382,026 11.993
June 7, 2130 1,056,571 12.250
Sept. 13, 2131 21,369,882 15.035
June 10, 2144 23,030,541 16.687
Sept. 15, 2145 16,107,599 10.556
June 12, 2149 17,904,340 9.268
Aug. 31, 2159 29,256,049 8.714
June 8, 2163 2,883,131 12.639
Sept. 14, 2164 18,635,266 14.199
June 23, 2168 27,308,633 8.923
June 9, 2182 10,838,081 14.212
Sept. 16, 2183 15,042,087 12.545
June 16, 2187 21,341,345 9.008

Images and Observations

2002 NN4's orbit is determined by observations dating back to July 2, 2002. It was last officially observed on July 5, 2020. The IAU Minor Planet Center records 578 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 NN4:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 0.8764 AU
  • Eccentricity: 0.4345
  • Inclination: 5.42°
  • Longitude of Ascending Node: 259.48°
  • Argument of Periapsis: 222.23°
  • Mean Anomaly: 83.77°

Physical Characteristics

  • Diameter: ~0.328 km
  • Magnitude: 20.1

Derived Characteristics

  • Orbit Period: 300 days (0.82 years)
  • Avg. Orbit Speed: 31.78 km/s
  • Aphelion Distance: 1.26 AU
  • Perihelion Distance: 0.50 AU
  • Rotation Period: 14.50 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 163348 (2002 NN4) 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 2002 NN4 to create an approximate landscape rendering. The approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.