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   63001
   We propose to observe the short period eclipsing binary system HD 9770
   for three consecutive rotation periods. We already observed this newly
   discovered eclipsing binary with BeppoSAX, detecting both flare
   activity and rotational modulation of the X-ray light curve. With ASCA
   we will map the eclipse rotational modulation, disentangling the short-
   term flare variability from the variability due to rotation modulation.
   This observing strategy and ASCA spectral capability will allow us to
   study the coronal structures. Thanks to its very short period and
   strong activity HD9770 offers a unique opportunity to monitor more
   contiguous orbital cycles. These data, compared with the BeppoSAX ones,
   will give us crucial answers on matter such as metal abundance
   deficiencies and coronal structure size.
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