2009 CD

Very small Aten-class Asteroid

Near-Earth
Space Reference » Aten-class Asteroids » 2009 CD

Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 15,724,442 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2009 CD is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2009 CD 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.

2009 CD orbits the sun every 313 days (0.86 years), coming as close as 0.66 AU and reaching as far as 1.14 AU from the sun. Based on its brightness and the way it reflects light, 2009 CD is probably between 0.068 to 0.153 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2009 CD's orbit is 0.10 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.

2009 CD has 17 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Jan. 30, 2021 15,724,442 12.661
Feb. 1, 2027 15,770,617 13.196
Feb. 3, 2033 18,938,183 13.898
Feb. 4, 2039 25,006,002 14.946
Jan. 21, 2080 26,808,726 12.206
Jan. 25, 2086 21,719,558 12.247
Jan. 29, 2092 17,611,935 12.431
Jan. 31, 2098 15,421,405 12.795
Feb. 3, 2104 16,214,467 13.303
Feb. 4, 2110 20,386,992 14.145
Feb. 6, 2116 27,540,207 15.392
Jan. 23, 2157 25,035,018 12.198
Jan. 27, 2163 19,946,045 12.307
Jan. 30, 2169 16,175,066 12.593
Feb. 2, 2175 15,594,887 13.056
Feb. 4, 2181 18,408,459 13.777
Feb. 5, 2187 24,805,654 14.912

Images and Observations

2009 CD's orbit is determined by observations dating back to Feb. 1, 2009. It was last officially observed on Feb. 6, 2021. The IAU Minor Planet Center records 96 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 2009 CD:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 0.9013 AU
  • Eccentricity: 0.2639
  • Inclination: 22.77°
  • Longitude of Ascending Node: 304.98°
  • Argument of Periapsis: 333.52°
  • Mean Anomaly: 250.71°

Physical Characteristics

  • Diameter: ~0.088 km
  • Magnitude: 22.95

Derived Characteristics

  • Orbit Period: 313 days (0.86 years)
  • Avg. Orbit Speed: 31.33 km/s
  • Aphelion Distance: 1.14 AU
  • Perihelion Distance: 0.66 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 2009 CD 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 2009 CD 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.