In 2017, scientists discovered the first known interstellar object to visit our solar system. This object is named as Oumuamua. Now, using SMT2 assertions to encode the following properties of 'Oumuamua: 1. It is about 400 meters long and 10 times as long as it is wide. 2. It was travelling about 38.3 kilometers per second relative to the Sun. 3. It varies in brightness by a factor of 10 as it spins on its axis every 7.3 hours. 4. It is dense, composed of rock and possibly metal, has no water or ice. 5. Its aspect ratio is greater than any asteroid or comet in our solar system. Note that you need to define all the necessary predicates or functions first