The sole known planet of Zembra, a cool K-typedwarf in Aquarius, Zembretta is a large gas planet with a diameter approaching that of Jupiter. For such a large planet it has a relatively low mass, and it is therefore much less dense than any of the giant planets in the Solar System. Zembretta orbits its star rapidly, at a distance of less than a tenth that of Earth from the Sun, so its 'year' is only a little more than seven days in length.
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