Ganymed is a large asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified Ganymed as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.
Ganymed orbits the sun every 1,590 days (4.35 years), coming as close as 1.24 AU and reaching as far as 4.09 AU from the sun. Ganymed is about 37.7 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Houston.
The rotation of Ganymed has been observed. It completes a rotation on its axis every 10.30 hours.
Ganymed's orbit is 0.35 AU from Earth's orbit at its closest point. This means that there is an 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.
Ganymed's orbit is determined by observations dating back to Oct. 23, 1924. It was last officially observed on Dec. 28, 2020. The IAU Minor Planet Center records 6,531 observations used to determine its orbit.
The position of Ganymed 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.