17421 (1988 SW1) is a large asteroid that shares Jupiter's orbit around the sun. NASA JPL has not classified 1988 SW1 as potentially hazardous because its orbit does not bring it close to Earth.
1988 SW1 orbits the sun every 4,260 days (11.66 years), coming as close as 4.63 AU and reaching as far as 5.66 AU from the sun. 1988 SW1 is about 23.8 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.
1988 SW1's orbit is 3.64 AU from Earth's orbit at its closest point. This means that there is an extremely wide berth between this asteroid and Earth at all times.
Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.
1988 SW1's orbit is determined by observations dating back to Sept. 15, 1988. It was last officially observed on Oct. 2, 2022. The IAU Minor Planet Center records 1,321 observations used to determine its orbit.
The position of 17421 (1988 SW1) 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.