What is the first planet ever made?

The first planet formed in our solar system is believed to be Jupiter. As the largest planet, it likely formed from the accumulation of gas and dust in the protoplanetary disk surrounding the young Sun. Its formation may have occurred relatively early in the solar system's history, possibly within a few million years after the Sun itself began to form. Jupiter's immense gravity also played a crucial role in shaping the orbits and formation of other planets.