Object name: NGC6248
NGC 6248 is a low surface brightness blue barred spiral located in Draco southeast of the bowl of the Little Dipper. It is classified as SBcd or SBd depending on the source. Redshift puts it about 51 million light-years distant while other measurements all show it much further away. Their average is about 84 million light-years. I measure the extreme length of the major axis to be 198" of arc. That translates to a diameter of 49,000 to 81,000 light-years. Most blue low surface brightness galaxies with little spiral structure I've imaged are usually less than 50,000 light-years in size. So I'm going to go with the closer and thus smaller size as I can't find anything else on this galaxy to help decide this issue.