Object name: NGC7076
NGC 7076, a planetary nebula, was discovered by William Herschel on October 15, 1794 as III 936 with a slightly wrong position. It was listed in the RNGC as a diffuse nebula. Abell rediscovered it as entry 75 in his list but didn't realize it was the same object as the misplaced NGC 7076. All this was corrected for the third RNGC corrections list. While a William Herschel discovery, it didn't make either of the Astronomical Herschel 400 observing programs. It's very unsymmetrical shape would indicate it is interacting with the interstellar medium which is compressing it on the leading side (east) creating the apparent shock front.