18844 (1999 RU27) is a large asteroid that orbits between Mars and Jupiter in the outer reaches of the main asteroid belt. NASA JPL has not classified 1999 RU27 as potentially hazardous because its orbit does not bring it close to Earth.
1999 RU27 orbits the sun every 2,130 days (5.83 years), coming as close as 2.91 AU and reaching as far as 3.56 AU from the sun. 1999 RU27 is about 12.5 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Cleveland, Ohio.
1999 RU27's orbit is 1.97 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 RU27's orbit is determined by observations dating back to March 3, 1985. It was last officially observed on Feb. 3, 2023. The IAU Minor Planet Center records 1,923 observations used to determine its orbit.
The position of 18844 (1999 RU27) 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.