2021 EY1 is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2021 EY1 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 EY1 orbits the sun every 363 days (0.99 years), coming as close as 0.54 AU and reaching as far as 1.45 AU from the sun. Based on its brightness and the way it reflects light, 2021 EY1 is probably between 0.012 to 0.027 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
2021 EY1'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.
2021 EY1 has 35 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| March 12, 2019 | 4,390,640 | 13.936 |
| March 11, 2020 | 1,581,770 | 14.589 |
| March 11, 2021 | 1,350,662 | 14.896 |
| March 10, 2022 | 3,886,878 | 15.486 |
| March 9, 2023 | 8,375,287 | 16.413 |
| March 7, 2024 | 13,504,755 | 17.464 |
| March 6, 2025 | 18,968,107 | 18.564 |
| March 5, 2026 | 24,990,605 | 19.813 |
| Nov. 12, 2125 | 25,104,457 | 19.014 |
| Nov. 11, 2126 | 20,560,910 | 17.862 |
| Nov. 9, 2127 | 16,788,266 | 16.776 |
| Nov. 7, 2128 | 14,160,192 | 15.690 |
| Nov. 6, 2129 | 13,193,708 | 14.640 |
| Nov. 5, 2130 | 14,165,591 | 13.632 |
| Nov. 4, 2131 | 16,704,646 | 12.615 |
| Nov. 3, 2132 | 20,273,776 | 11.609 |
| Nov. 3, 2133 | 24,476,827 | 10.643 |
| Nov. 3, 2134 | 29,049,729 | 9.710 |
| March 12, 2173 | 27,850,640 | 10.018 |
| March 14, 2174 | 23,551,334 | 10.519 |
| March 15, 2175 | 19,282,581 | 11.199 |
| March 14, 2176 | 15,181,467 | 11.892 |
| March 14, 2177 | 11,298,874 | 12.605 |
| March 14, 2178 | 7,759,508 | 13.298 |
| March 14, 2179 | 4,866,380 | 13.862 |
| March 13, 2180 | 2,886,882 | 14.304 |
| March 13, 2181 | 2,009,346 | 14.543 |
| March 13, 2182 | 2,091,850 | 14.497 |
| March 13, 2183 | 3,268,517 | 14.216 |
| March 13, 2184 | 5,818,363 | 13.672 |
| March 14, 2185 | 9,209,372 | 12.998 |
| March 15, 2186 | 13,014,148 | 12.295 |
| March 15, 2187 | 17,142,994 | 11.531 |
| March 14, 2188 | 21,415,426 | 10.817 |
| March 13, 2189 | 26,162,675 | 10.158 |
2021 EY1's orbit is determined by observations dating back to March 7, 2021. It was last officially observed on March 8, 2021. The IAU Minor Planet Center records 29 observations used to determine its orbit.
The position of 2021 EY1 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.