Arachna
Arachna was a "burned-out" supernova. Cepheus was located near the gas cloud, and the nearest starbase was Starbase 23.

In 2269, the  conducted a science survey of Arachna in order to acquire updated measures of radiation and  of expansion as the nova entered its cycle of strongest emissions. 

The Enterprise coordinated with Starbase 23 during this mission, which it contacted on stardate 55773.3 to inform them that they had arrived at the gas cloud and had started mapping. ()

de: Arachna
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