NGC 6946 is an intermediate spiral galaxy
about 22 million light-years away, on the border between the
constellations Cepheus and Cygnus. It was discovered by William
Herschel on September 9, 1798. NGC 6946 is highly obscured by
interstellar matter of the Milky Way galaxy, as it is quite
close to the galactic plane. Nine supernovae (SN 1917A, SN
1939C, SN 1948B, SN 1968D, SN 1969P, SN 1980K, SN 2002hh, SN
2004et, and SN 2008S) have been observed in NGC 6946.