Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a school bus or smaller
- Will pass within 8,449,790 km of Earth in 2023
- Classified as a Near Earth Asteroid (NEA)
- Not a Potentially Hazardous Object
- See orbit simulation
Overview
2018 CB is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2018 CB 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.
2018 CB orbits the sun every 611 days (1.67 years), coming as close as 0.96 AU and reaching as far as 1.86 AU from the sun. Based on its brightness and the way it reflects light, 2018 CB is probably between 0.011 to 0.051 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
The rotation of 2018 CB has been observed. It completes a rotation on its axis every 0.09 hours.
Close Approaches
2018 CB'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.
2018 CB has 6 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| March 8, 2023 | 8,449,790 | 5.651 |
| April 15, 2028 | 13,270,801 | 6.644 |
| May 4, 2033 | 27,356,453 | 10.680 |
| Jan. 21, 2080 | 26,001,466 | 11.478 |
| Feb. 3, 2085 | 5,097,539 | 7.367 |
| Feb. 8, 2090 | 896,361 | 6.661 |
Images and Observations
2018 CB's orbit is determined by observations dating back to Jan. 28, 2018. It was last officially observed on Feb. 9, 2018. The IAU Minor Planet Center records 209 observations used to determine its orbit.
Accessibility and Exploration
2018 CB can be reached with a journey of 370 days. This trajectory would require a delta-v of 11.604 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 197 potential trajectories and launch windows to this asteroid.
See more at the NHATS Mission Trajectories table for 2018 CB.
Similar Objects
These objects have orbits that share similar characteristics to the orbit of 2018 CB:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 1.409 AU
- Eccentricity: 0.3201
- Inclination: 5.29°
- Longitude of Ascending Node: 320.57°
- Argument of Periapsis: 208.24°
- Mean Anomaly: 109.76°
Physical Characteristics
- Diameter: ~0.031 km
- Magnitude: 25.9
Derived Characteristics
- Orbit Period: 611 days (1.67 years)
- Avg. Orbit Speed: 25.09 km/s
- Aphelion Distance: 1.86 AU
- Perihelion Distance: 0.96 AU
- Rotation Period: 0.09 hours
Map Comparison
Orbit Simulation
Sky Map
The position of 2018 CB 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 2018 CB 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.
