Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to a football field (0.28 km diameter)
  • Will pass within 29,507,947 km of Earth in 2023
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2010 DJ77 is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2010 DJ77 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.

2010 DJ77 orbits the sun every 341 days (0.93 years), coming as close as 0.75 AU and reaching as far as 1.16 AU from the sun. 2010 DJ77 is about 0.3 kilometers in diameter, making it a small to average asteroid, comparable in size to a football field.

Close Approaches

2010 DJ77'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.

2010 DJ77 has 15 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Jan. 24, 2023 29,507,947 17.450
June 30, 2025 19,082,340 15.877
Jan. 19, 2037 21,606,086 16.244
June 27, 2039 28,989,485 17.244
Jan. 14, 2051 15,898,636 15.050
July 12, 2052 21,734,130 12.728
Jan. 10, 2065 16,354,594 14.514
July 10, 2066 15,303,234 13.046
Jan. 6, 2079 19,870,026 14.094
July 7, 2080 9,544,798 13.530
Jan. 5, 2093 21,430,777 13.985
July 7, 2094 8,349,508 13.710
Jan. 4, 2107 23,913,394 13.868
July 7, 2108 7,498,161 13.993
July 6, 2122 7,768,686 14.187

Images and Observations

2010 DJ77's orbit is determined by observations dating back to Feb. 20, 2010. It was last officially observed on June 6, 2010. The IAU Minor Planet Center records 42 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 2010 DJ77:

References

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Orbital Elements

  • Epoch: 2460000.5 JD
  • Semi-major axis: 0.9546 AU
  • Eccentricity: 0.2105
  • Inclination: 24.72°
  • Longitude of Ascending Node: 286.72°
  • Argument of Periapsis: 103.78°
  • Mean Anomaly: 93.78°

Physical Characteristics

  • Diameter: 0.27700 km
  • Magnitude: 21.95

Derived Characteristics

  • Orbit Period: 341 days (0.93 years)
  • Avg. Orbit Speed: 30.45 km/s
  • Aphelion Distance: 1.16 AU
  • Perihelion Distance: 0.75 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2010 DJ77 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 2010 DJ77 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.