2009 CS

Very small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 2009 CS

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the U.S. Capitol building
  • Will pass within 9,087,199 km of Earth in 2028
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2009 CS is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2009 CS as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2009 CS orbits the sun every 1,040 days (2.85 years), coming as close as 0.81 AU and reaching as far as 3.20 AU from the sun. Based on its brightness and the way it reflects light, 2009 CS is probably between 0.305 to 0.682 kilometers in diameter, making it larger than 90% of asteroids but tiny compared to large asteroids, very roughly comparable in size to the U.S. Capitol building.

Close Approaches

2009 CS's orbit is 0.04 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 CS has 10 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Sept. 20, 2028 9,087,199 14.594
Nov. 6, 2045 25,665,557 11.605
Dec. 21, 2062 21,743,152 11.237
Jan. 26, 2080 13,225,670 16.041
Oct. 7, 2099 14,270,133 11.565
Dec. 15, 2116 23,941,619 11.463
Jan. 25, 2134 10,143,188 15.378
Oct. 25, 2153 21,425,345 11.091
Jan. 21, 2171 6,583,128 13.848
Oct. 3, 2190 11,142,786 12.344

Images and Observations

2009 CS's orbit is determined by observations dating back to Feb. 2, 2009. It was last officially observed on March 2, 2012. The IAU Minor Planet Center records 97 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 CS:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.007 AU
  • Eccentricity: 0.5953
  • Inclination: 3.21°
  • Longitude of Ascending Node: 250.02°
  • Argument of Periapsis: 170.86°
  • Mean Anomaly: 69.58°

Physical Characteristics

  • Diameter: ~0.394 km
  • Magnitude: 19.7

Derived Characteristics

  • Orbit Period: 1,040 days (2.85 years)
  • Avg. Orbit Speed: 20.99 km/s
  • Aphelion Distance: 3.20 AU
  • Perihelion Distance: 0.81 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 2009 CS 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 CS 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.