385185 (1993 RO) is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 1993 RO as potentially hazardous because its orbit does not bring it close to Earth.
1993 RO orbits the sun every 90,900 days (248.87 years), coming as close as 31.53 AU and reaching as far as 47.59 AU from the sun. Based on its brightness and the way it reflects light, 1993 RO is probably between 70.885 to 158.504 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Delaware.
1993 RO's orbit is 30.50 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.
1993 RO's orbit is determined by observations dating back to Aug. 10, 1994. It was last officially observed on Oct. 20, 2020. The IAU Minor Planet Center records 23 observations used to determine its orbit.
The position of 385185 (1993 RO) 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.