Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 14,303,325 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

163364 (2002 OD20) is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2002 OD20 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2002 OD20 orbits the sun every 583 days (1.60 years), coming as close as 0.86 AU and reaching as far as 1.87 AU from the sun. Based on its brightness and the way it reflects light, 2002 OD20 is probably between 0.302 to 1.352 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, very roughly comparable in size to the Golden Gate Bridge.

The rotation of 2002 OD20 has been observed. It completes a rotation on its axis every 2.42 hours.

Close Approaches

2002 OD20's orbit is 0.03 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.

2002 OD20 has 17 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
May 3, 2021 14,303,325 7.058
March 18, 2029 22,378,247 7.617
Jan. 31, 2037 14,343,417 7.046
Jan. 12, 2045 8,799,772 10.508
May 26, 2072 10,596,731 11.282
May 11, 2080 10,313,934 7.575
March 25, 2088 22,185,661 7.588
Feb. 5, 2096 15,687,805 6.941
Jan. 14, 2104 10,111,750 10.838
June 6, 2123 29,646,679 15.076
May 23, 2131 3,717,579 9.506
April 26, 2139 17,358,173 7.002
March 12, 2147 22,054,030 7.560
Jan. 26, 2155 10,927,107 7.643
Jan. 13, 2163 12,301,473 11.336
May 31, 2190 15,838,008 12.346
May 19, 2198 6,319,587 8.352

Images and Observations

2002 OD20's orbit is determined by observations dating back to Nov. 22, 2001. It was last officially observed on Feb. 1, 2021. The IAU Minor Planet Center records 520 observations used to determine its orbit.

Accessibility and Exploration

2002 OD20 can be reached with a journey of 362 days. This trajectory would require a delta-v of 10.755 km/s. To put this into perspective, the delta-v to launch a rocket to Low-Earth Orbit is 9.7 km/s. There are 384 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2002 OD20.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2002 OD20:

References

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Orbital Elements

  • Epoch: 2459200.5 JD
  • Semi-major axis: 1.365 AU
  • Eccentricity: 0.3691
  • Inclination: 4.19°
  • Longitude of Ascending Node: 259.96°
  • Argument of Periapsis: 275.24°
  • Mean Anomaly: 299.09°

Physical Characteristics

  • Diameter: ~0.827 km
  • Magnitude: 18.8

Derived Characteristics

  • Orbit Period: 583 days (1.60 years)
  • Avg. Orbit Speed: 25.47 km/s
  • Aphelion Distance: 1.87 AU
  • Perihelion Distance: 0.86 AU
  • Rotation Period: 2.42 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 163364 (2002 OD20) 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 OD20 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.