15521 (1999 XH133) is a large asteroid that shares Jupiter's orbit around the sun. NASA JPL has not classified 1999 XH133 as potentially hazardous because its orbit does not bring it close to Earth.
1999 XH133 orbits the sun every 4,390 days (12.02 years), coming as close as 4.88 AU and reaching as far as 5.61 AU from the sun. 1999 XH133 is about 27.9 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.
The rotation of 1999 XH133 has been observed. It completes a rotation on its axis every 50.20 hours.
1999 XH133's orbit is 3.88 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.
1999 XH133's orbit is determined by observations dating back to April 16, 1955. It was last officially observed on Jan. 13, 2023. The IAU Minor Planet Center records 1,754 observations used to determine its orbit.
The position of 15521 (1999 XH133) 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.