129P/Shoemaker-Levy 3 is a large comet whose orbit brings it closer to the sun than Jupiter. NASA JPL has not classified 129P/Shoemaker-Levy 3 as potentially hazardous because its orbit does not bring it close to Earth.
129P/Shoemaker-Levy 3 orbits the sun every 3,160 days (8.65 years), coming as close as 3.58 AU and reaching as far as 4.86 AU from the sun. Based on its brightness and the way it reflects light, 129P/Shoemaker-Levy 3 is probably between 2658.000 to 5943.469 kilometers in diameter, making it the largest asteroid/dwarf planet, very roughly comparable in size to the U.S. state of Alaska.
129P/Shoemaker-Levy 3's orbit is 2.59 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.
129P/Shoemaker-Levy 3's orbit is determined by observations dating back to Nov. 4, 2002. It was last officially observed on Sept. 20, 2019. The IAU Minor Planet Center records 579 observations used to determine its orbit.
The position of 129P/Shoemaker-Levy 3 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.