EuJovians are primarily defined by their mass, which ranges from 0.71 to 3.5 that of Jupiter.
These are the most common among the Jovian Class. Rarely, however, will a planetary system sport more than one such planet, unless the original accretion disk was very massive indeed. typically, with the exception of the local star or other stellar companions, all of the material of a solar system combined will not mass as much as a single EuJovian world.
The atmosphere of these planets tends to be very turbulent, flowing in much the same manner as terrestrial oceans, but on a truly heroic scale. Some storms systems can last for hundreds or thousands of years, while others last only a few months. Continent sized thunderstorms are insignificant when viewed from orbit; the night side of the planet is flecked with huge bolts of lightning, tens of thousands of kilometers in length. Everything about a EuJovian's atmosphere is gigantic.
EuJovian worlds tend to have many moons, most of which may have been gravitational captured throughout the planet's lifetime. however, they also form true moons, often times massing the same as small planets.
Jupiter, King of the Planets, and what most people think of when they hear of EuJovian worlds.
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