Ra'sen

Astrography

Location

The Ra'sen system is close to the heart of known space, in the southern celestial hemisphere. It is unusually close to the red dwarf system Hasek'urun, known to humans as YZ Ceti, at just under two lightyears away. It is also a very well-connected system, having jump links to twelve other systems: Hasek'urun, Gliese 65, Ran, van Maanen's Star, Ku'sen, Chel'sen, Ra, Gliese 1005, Hal'sen, Teegarden's Star, Othrys, and Erebus.

Structure

The Ra'sen system is highly unusual for a higher-mass star in that its inner planets are packed into a complex, dynamically-stable resonance chain. No less than four large telluric planets, two nephelae, and two tethae are crammed into the space between the star itself and the outer edge of its habitable zone. Seven of the eight inner planets have extremely dense atmospheres (the exception being Ra'na) -a somewhat unusual system configuration. Beyond this is a large region of asteroidal and cometary debris, shepherded into place by the lone giant world that comprises the outer system.   SYSTEM OUTLINE

Ecosystem

The Ra'sen system is the origin point of the Ranagenia, an ancient and highly diverse lineage of carbon-based organisms from Ra'na. Ranagenids share many characteristics with other water-solvent, oxygen-CO₂ biospheres like Terragenids and Hemeragenids, but are not especially widespread in the cosmos due to the necessity of the relatively rare element vanadium as an enzymatic cofactor.