Hartimas
Hartimas is a fictional planet featured in the science fiction novel "Project Hail Mary" by Andy Weir. In the story, Hartimas is a gas giant located in the Gliese 581 system. It is notable for its dense atmosphere, which is rich in ammonia and methane, and its powerful magnetic field. The planet is orbited by several moons, including one named Astrophage, which plays a critical role in the novel's plot.
The extreme conditions on Hartimas, such as its high atmospheric pressure and low temperatures, make it uninhabitable