73641 (1977 UK3) is a large asteroid that shares Jupiter's orbit around the sun. NASA JPL has not classified 1977 UK3 as potentially hazardous because its orbit does not bring it close to Earth.
1977 UK3 orbits the sun every 4,390 days (12.02 years), coming as close as 4.99 AU and reaching as far as 5.51 AU from the sun. 1977 UK3 is about 14.7 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Baltimore.
1977 UK3's orbit is 3.98 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.
1977 UK3's orbit is determined by observations dating back to Oct. 18, 1977. It was last officially observed on June 30, 2023. The IAU Minor Planet Center records 596 observations used to determine its orbit.
The position of 73641 (1977 UK3) 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.