Ariadne is a large asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Ariadne as potentially hazardous because its orbit does not bring it close to Earth.
Ariadne orbits the sun every 1,190 days (3.26 years), coming as close as 1.83 AU and reaching as far as 2.57 AU from the sun. Ariadne is about 71.3 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Delaware.
The rotation of Ariadne has been observed. It completes a rotation on its axis every 5.76 hours.
Ariadne's orbit is 0.82 AU from Earth's orbit at its closest point. This means that there is an very 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.
Ariadne's orbit is determined by observations dating back to Aug. 3, 1864. It was last officially observed on Aug. 5, 2021. The IAU Minor Planet Center records 2,997 observations used to determine its orbit.
Scientists have been able to determine this object's shape.
View asteroid Ariadne in 3D.
The position of Ariadne 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.