425755 (2011 CP4)

Very small Aten-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Aten-class Asteroids » 425755 (2011 CP4)

Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to a football field
  • Will pass within 28,708,722 km of Earth in 2028
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

425755 (2011 CP4) is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2011 CP4 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2011 CP4 orbits the sun every 318 days (0.87 years), coming as close as 0.12 AU and reaching as far as 1.70 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2011 CP4 is probably between 0.154 to 0.345 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

Close Approaches

2011 CP4's orbit is 0.02 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.

2011 CP4 has 29 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Jan. 7, 2028 28,708,722 34.697
Feb. 26, 2032 12,101,302 27.772
Jan. 1, 2035 18,883,072 28.574
Feb. 20, 2039 17,140,098 33.631
Feb. 28, 2052 26,733,001 25.259
Jan. 4, 2055 19,785,174 31.671
Feb. 23, 2059 3,431,889 30.381
Dec. 30, 2061 26,869,630 26.065
Jan. 7, 2075 27,103,476 34.220
Feb. 25, 2079 8,196,088 28.567
Dec. 31, 2081 21,165,420 27.615
Feb. 18, 2086 23,608,237 35.061
Feb. 27, 2099 19,241,156 26.475
Jan. 3, 2102 17,786,311 30.059
Feb. 22, 2106 10,498,316 32.129
Jan. 6, 2122 22,083,704 32.614
Feb. 25, 2126 3,631,809 29.721
Dec. 31, 2128 24,046,931 26.761
Feb. 18, 2133 26,114,772 35.622
Feb. 28, 2146 19,505,483 26.439
Jan. 3, 2149 17,774,971 30.082
Feb. 23, 2153 10,449,014 32.109
Jan. 7, 2169 22,966,555 32.936
Feb. 26, 2173 4,999,241 29.309
Jan. 1, 2176 23,506,801 26.890
Feb. 19, 2180 28,812,351 36.250
Jan. 9, 2189 27,942,233 34.451
Feb. 27, 2193 8,898,589 28.450
Jan. 2, 2196 20,979,123 27.679

Images and Observations

2011 CP4's orbit is determined by observations dating back to Jan. 10, 2002. It was last officially observed on Feb. 4, 2018. The IAU Minor Planet Center records 147 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 2011 CP4:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 0.9116 AU
  • Eccentricity: 0.8702
  • Inclination: 9.47°
  • Longitude of Ascending Node: 147.98°
  • Argument of Periapsis: 159.93°
  • Mean Anomaly: 53.43°

Physical Characteristics

  • Diameter: ~0.199 km
  • Magnitude: 21.18

Derived Characteristics

  • Orbit Period: 318 days (0.87 years)
  • Avg. Orbit Speed: 31.19 km/s
  • Aphelion Distance: 1.70 AU
  • Perihelion Distance: 0.12 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 425755 (2011 CP4) 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 2011 CP4 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.