153P/Ikeya-Zhang is a large comet whose orbit does not match any defined comet orbit class. NASA JPL has not classified 153P/Ikeya-Zhang as potentially hazardous because its orbit does not bring it close to Earth.
153P/Ikeya-Zhang orbits the sun every 134,000 days (366.87 years), coming as close as 0.51 AU and reaching as far as 101.91 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 153P/Ikeya-Zhang 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.
153P/Ikeya-Zhang's orbit is 0.33 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.
Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.
153P/Ikeya-Zhang's orbit is determined by observations dating back to Feb. 3, 1661. It was last officially observed on Oct. 2, 2002. The IAU Minor Planet Center records 1,784 observations used to determine its orbit.
The position of 153P/Ikeya-Zhang 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.