******************************************************
   PR # 21518
    A low surface brightness, extended, soft x-ray source has been       
    recently discovered with the ROSAT satellite. While we believe the   
    most likely explanation is that the object is a previously uncata-   
    logued Galactic supernova remnant, the excellent spectral response of
    ASCA will clearly identify the nature of the x-ray emission and      
    enable the analysis of the numerous hot-spots which appear to be     
    embedded in the wider x-ray halo. We request two 30 ks observations  
    to investigate the spectral nature of the full object and to examine 
    the variability of the hot-spots, one of which appears to have a     
    considerably harder spectrum.                                        
 ******************************************************