2019 SF2 is a mid-sized asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2019 SF2 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 SF2 orbits the sun every 562 days (1.54 years), coming as close as 1.05 AU and reaching as far as 1.61 AU from the sun. Based on its brightness and the way it reflects light, 2019 SF2 is probably between 0.380 to 1.700 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the Golden Gate Bridge.
2019 SF2'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.
2019 SF2 has 7 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Dec. 3, 2019 | 23,443,284 | 5.107 |
| Dec. 3, 2039 | 21,288,542 | 4.689 |
| Nov. 25, 2096 | 19,855,782 | 3.064 |
| Nov. 28, 2116 | 21,793,306 | 3.228 |
| Dec. 5, 2159 | 22,965,487 | 4.966 |
| Dec. 3, 2179 | 17,501,465 | 3.906 |
| Dec. 6, 2199 | 25,368,287 | 5.457 |
2019 SF2's orbit is determined by observations dating back to Jan. 26, 2017. It was last officially observed on Jan. 22, 2020. The IAU Minor Planet Center records 77 observations used to determine its orbit.
2019 SF2 can be reached with a journey of 418 days. This trajectory would require a delta-v of 10.155 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 7,093 potential trajectories and launch windows to this asteroid.
See more at the NHATS Mission Trajectories table for 2019 SF2.
The position of 2019 SF2 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.