2021 KN3 is a very small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2021 KN3 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.
2021 KN3 orbits the sun every 1,000 days (2.74 years), coming as close as 1.09 AU and reaching as far as 2.82 AU from the sun. Based on its brightness and the way it reflects light, 2021 KN3 is probably between 0.048 to 0.107 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
2021 KN3's orbit is 0.08 AU from Earth's orbit at its closest point. This means that there is an wide berth between this asteroid and Earth at all times.
2021 KN3 has 6 close approaches predicted in the coming decades:
|Date||Distance from Earth (km)||Velocity (km/s)|
|Aug. 4, 2021||12,331,341||5.676|
|July 8, 2032||26,812,985||8.579|
|Aug. 10, 2095||14,267,891||6.112|
|July 19, 2106||18,078,950||6.722|
|Aug. 25, 2169||27,753,178||9.117|
|July 30, 2180||11,986,575||5.653|
2021 KN3's orbit is determined by observations dating back to May 20, 2021. It was last officially observed on Sept. 13, 2021. The IAU Minor Planet Center records 109 observations used to determine its orbit.
The position of 2021 KN3 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.
The below comparison is an artistic rendering that uses available data on the diameter of 2021 KN3 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.