129772 (1999 HR11) is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 1999 HR11 as potentially hazardous because its orbit does not bring it close to Earth.
1999 HR11 orbits the sun every 106,000 days (290.21 years), coming as close as 42.18 AU and reaching as far as 45.28 AU from the sun. Based on its brightness and the way it reflects light, 1999 HR11 is probably between 96.506 to 215.794 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Connecticut.
1999 HR11's orbit is 41.20 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 HR11's orbit is determined by observations dating back to March 21, 1999. It was last officially observed on April 28, 2020. The IAU Minor Planet Center records 64 observations used to determine its orbit.
The position of 129772 (1999 HR11) 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.