Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 24,432,416 km of Earth in 2020
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2012 DJ54 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2012 DJ54 as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

2012 DJ54 orbits the sun every 466 days (1.28 years), coming as close as 0.91 AU and reaching as far as 1.45 AU from the sun. Based on its brightness and the way it reflects light, 2012 DJ54 is probably between 0.035 to 0.160 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2012 DJ54's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

2012 DJ54 has 3 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Oct. 17, 2020 24,432,416 10.223
March 9, 2026 24,828,162 10.406
Nov. 1, 2034 4,546,053 5.255

NASA Sentry has assessed impact risk for 47 very close approach scenarios. Here are the top scenarios ordered by probability of impact:

Date Distance from Earth (km) Distance Error (km) Probability of Impact (%) Impact Energy (Mt)
Feb. 24, 2068 725.46 ±7.38 0.01258 0.008135
Feb. 23, 2100 218.28 ±4.41 0.00873 0.008158
Feb. 23, 2100 4,622.40 ±4.40 0.00423 0.00815
Feb. 22, 2086 744.72 ±6.72 0.00218 0.008154
Feb. 23, 2118 3,511.74 ±6.20 0.00154 0.008143
Feb. 23, 2113 2,073.66 ±4.51 0.00119 0.008151
Feb. 25, 2118 2,169.96 ±5.15 0.00062 0.008133
Feb. 24, 2119 3,498.90 ±4.92 0.00041 0.008153
Feb. 23, 2110 2,003.04 ±3.26 0.00026 0.008179
Feb. 23, 2115 1,707.72 ±7.86 0.00023 0.008148
Feb. 24, 2112 5,495.52 ±7.67 0.00022 0.008125
Feb. 23, 2113 1,540.80 ±6.99 0.00021 0.008148
Feb. 23, 2115 2,465.28 ±8.27 0.00016 0.008145
Feb. 24, 2102 5,457.00 ±8.41 0.00016 0.008136
Feb. 23, 2077 853.86 ±6.90 0.00016 0.008138
Feb. 23, 2119 2,645.04 ±9.70 0.00013 0.008143
Feb. 23, 2097 866.70 ±8.77 0.00010 0.008141
Feb. 24, 2115 5,822.94 ±5.22 0.00010 0.008156
Feb. 23, 2105 3,839.16 ±4.67 0.00007 0.008152
Feb. 24, 2111 693.36 ±8.72 0.00006 0.008124
Feb. 25, 2119 4,461.90 ±4.93 0.00006 0.008127
Feb. 22, 2094 2,741.34 ±8.92 0.00005 0.008139
Feb. 24, 2114 2,863.32 ±0.12 0.00005 0.008125
Feb. 22, 2098 4,603.14 ±6.35 0.00004 0.008154
Feb. 23, 2103 3,800.64 ±6.28 0.00004 0.008163
Feb. 24, 2114 2,356.14 ±10.67 0.00004 0.008126
Feb. 24, 2099 5,264.40 ±5.98 0.00003 0.008128
Feb. 23, 2081 1,592.16 ±7.14 0.00003 0.008142
Feb. 23, 2113 3,807.06 ±7.44 0.00002 0.008145
Feb. 23, 2115 6,201.72 ±6.69 0.00002 0.008149
Feb. 24, 2072 2,709.24 ±7.50 0.00002 0.008139
Feb. 23, 2106 256.80 ±7.04 0.00002 0.008142
Feb. 25, 2108 2,131.44 ±6.14 0.00002 0.008138
Feb. 23, 2088 5,855.04 ±6.54 0.00002 0.008164
Feb. 22, 2098 6,034.80 ±9.01 0.00002 0.008129
Feb. 24, 2084 2,580.84 ±7.23 0.00001 0.008135
Feb. 25, 2107 2,670.72 ±5.72 0.00001 0.008131
Feb. 24, 2104 5,431.32 ±4.25 0.00001 0.008143
Feb. 22, 2094 1,097.82 ±8.56 0.00001 0.008143
Feb. 23, 2085 5,302.92 ±7.08 0.00001 0.008129
Feb. 23, 2119 4,590.30 ±6.45 0.00001 0.008154
Feb. 24, 2101 5,270.82 ±6.70 0.00001 0.008113
Feb. 24, 2106 4,975.50 ±6.38 0.00001 0.008119
Feb. 25, 2119 5,206.62 ±5.39 0.00001 0.00812
Feb. 24, 2119 3,543.84 ±5.74 0.00000 0.008102
Feb. 25, 2119 5,816.52 ±3.43 0.00000 0.008099
Feb. 24, 2091 5,052.54 ±2.55 0.00000 0.008101

Images and Observations

2012 DJ54's orbit is determined by observations dating back to Feb. 27, 2012. It was last officially observed on March 15, 2012. The IAU Minor Planet Center records 29 observations used to determine its orbit.

Accessibility and Exploration

2012 DJ54 can be reached with a journey of 322 days. This trajectory would require a delta-v of 7.384 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 99,166 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2012 DJ54.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2012 DJ54:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 1.176 AU
  • Eccentricity: 0.2301
  • Inclination: 1.99°
  • Longitude of Ascending Node: 336.85°
  • Argument of Periapsis: 120.11°
  • Mean Anomaly: 210.44°

Physical Characteristics

  • Diameter: ~0.098 km
  • Magnitude: 28.5

Derived Characteristics

  • Orbit Period: 466 days (1.28 years)
  • Avg. Orbit Speed: 27.45 km/s
  • Aphelion Distance: 1.45 AU
  • Perihelion Distance: 0.91 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2012 DJ54 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 2012 DJ54 to create an approximate landscape rendering. The approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.