Final answer:
The Hypatia in the book 'Illuminae' is a spacecraft used to evacuate survivors from a planet under attack. Its original job is not detailed, but it serves a critical role in the survival of the characters.
Step-by-step explanation:
The Original Job of the Hypatia in the Book Illuminae
The vessel named Hypatia in the book Illuminae is a fictional spacecraft. The question seems to be conflating this with the historical figure of Hypatia of Alexandria, a renowned teacher and scholar. However, if we focus on the book, the Hypatia's original job is not explicitly mentioned in the story.
The spacecraft serves as an evacuating vessel that carries survivors from the planet Kerenza after it is attacked. As the book is a work of science fiction, the jobs and functions of spaceships often include transportation, research, or specialized missions; in the case of the Hypatia, it notably serves as a means to escape and survive.