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   PR # 12164
    The unusual morphology of the supernova remnant VRO 42.05.01 (G166.0
    +4.3)suggests that it has broken through the edge of the cloud of
    warm gas in which it was formed to re-energize a hot interstellar
    tunnel. Our ROSAT data have provided new information on the remnant's
    thermal state which has permitted us to obtain more accurate super-
    nova explosion parameters. Asuka SIS observations of this remnant are
    now needed to directly measure line fluxes and determine abundances
    in the remnant.  This object is ideally matched to the SIS character-
    istics, since interstellar absorption cuts off its spectrum below
    about0.6 keV and its angular size (about 30') takes full advantage of
    the angular resolution of the SIS instrument.

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