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   51059
   We propose to observe the galactic superluminal source GRO J1655-40
   (Nova Scorpius 1994) simultaneously with radio, optical, X-ray
   (ASCA/XTE), and gamma ray (BASTE). Among three known galactic jet
   objects, GRO J1655-40 is the unique source identified as a blackhole
   candidate through mass determination by optical observation. It is the
   best target to study the X-ray emission mechanism of blackhole, the
   origin of jet, and its relation to AGN. We request to cover the full
   orbital phase to investigate the system completely. Our ASCA
   observation should provide the key information to understand the
   object.
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