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   52082
   Three days ago (Aug 2), SN1995N was detected for the first time in X-
   rays with the ROSAT satellite's HRI (Lewin, Zimmermann & Aschenbach,
   IAUC submitted Aug 5), making it only the seventh supernova to be
   detected in the X-ray band. As a logical consequence, we propose
   observations of SN1995N with ASCA's superior energy resolution and
   sensitivity at higher energies. Such observations may allow us to
   determine the neutral hydrogen absorption column density of the front
   and reverse shocks and thus the thickness of the radiatively cooled
   layer between them, providing important information on the progenitor's
   circumstellar environment. Coordinated observations at radio
   wavelengths with the VLA are underway.
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