Sumiana is a large asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Sumiana as potentially hazardous because its orbit does not bring it close to Earth.
Sumiana orbits the sun every 1,750 days (4.79 years), coming as close as 2.76 AU and reaching as far as 2.93 AU from the sun. Based on its brightness and the way it reflects light, Sumiana is probably between 10.582 to 23.661 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the city of Cleveland, Ohio.
Sumiana's orbit is 1.74 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.
Sumiana's orbit is determined by observations dating back to Dec. 11, 1950. It was last officially observed on April 7, 2023. The IAU Minor Planet Center records 3,959 observations used to determine its orbit.
The position of Sumiana 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.