Crataxia (or Beta Delta Gamma II) was the inhabited second planet in the Xilnar system. It was the homeworld of the Crataxians, and the Terilz. It was also the newest, indefinite member of the Federation as of late 2473, and official as of early 2474. The planet was mildly cosmopolitan, allowing only UFP members to visit. This was due to the fragility and extensive complexities in basic Crataxian scientific theories, methods, hypothesis, paradoxes et al.