2019 SN is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2019 SN 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.
2019 SN orbits the sun every 728 days (1.99 years), coming as close as 1.00 AU and reaching as far as 2.17 AU from the sun. Based on its brightness and the way it reflects light, 2019 SN is probably between 0.021 to 0.046 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
2019 SN's orbit is 0.05 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.
2019 SN has 21 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Sept. 17, 2019 | 7,393,478 | 7.458 |
| Sept. 13, 2021 | 8,923,753 | 8.089 |
| Sept. 9, 2023 | 13,588,991 | 9.207 |
| Sept. 4, 2025 | 21,468,975 | 10.750 |
| Nov. 25, 2166 | 28,865,133 | 9.538 |
| Nov. 15, 2168 | 22,976,406 | 7.656 |
| Oct. 31, 2170 | 18,823,512 | 6.416 |
| Oct. 16, 2172 | 15,669,905 | 6.017 |
| Oct. 5, 2174 | 12,591,109 | 6.070 |
| Sept. 28, 2176 | 10,413,232 | 6.323 |
| Sept. 26, 2178 | 9,287,006 | 6.548 |
| Sept. 23, 2180 | 8,644,507 | 6.704 |
| Sept. 23, 2182 | 8,275,694 | 6.841 |
| Sept. 24, 2184 | 8,772,022 | 6.688 |
| Sept. 26, 2186 | 9,338,659 | 6.527 |
| Sept. 29, 2188 | 10,544,433 | 6.287 |
| Oct. 6, 2190 | 12,755,148 | 6.029 |
| Oct. 16, 2192 | 15,541,939 | 5.982 |
| Nov. 2, 2194 | 18,720,848 | 6.402 |
| Nov. 16, 2196 | 22,804,847 | 7.690 |
| Nov. 26, 2198 | 28,449,847 | 9.505 |
2019 SN's orbit is determined by observations dating back to Sept. 18, 2019. It was last officially observed on Sept. 7, 2021. The IAU Minor Planet Center records 29 observations used to determine its orbit.
The position of 2019 SN 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.