2018 CH is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2018 CH 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 CH orbits the sun every 270 days (0.74 years), coming as close as 0.49 AU and reaching as far as 1.15 AU from the sun. Based on its brightness and the way it reflects light, 2018 CH is probably between 0.014 to 0.031 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
2018 CH's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.
2018 CH has 13 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| March 7, 2021 | 22,885,290 | 8.453 |
| April 16, 2024 | 8,074,240 | 9.315 |
| April 17, 2027 | 29,396,181 | 16.825 |
| Jan. 31, 2035 | 2,588,318 | 10.171 |
| March 12, 2038 | 22,916,538 | 8.457 |
| April 19, 2041 | 3,926,369 | 10.596 |
| Jan. 30, 2049 | 15,688,311 | 13.900 |
| April 18, 2058 | 22,860,651 | 15.420 |
| April 19, 2072 | 7,923,717 | 12.061 |
| Jan. 31, 2080 | 2,080,207 | 10.896 |
| April 20, 2103 | 3,705,357 | 10.542 |
| Jan. 31, 2145 | 9,636,108 | 12.594 |
| April 11, 2168 | 13,962,458 | 8.466 |
2018 CH's orbit is determined by observations dating back to Feb. 4, 2018. It was last officially observed on Feb. 13, 2018. The IAU Minor Planet Center records 36 observations used to determine its orbit.
The position of 2018 CH 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.