NGC 7017 is a lenticular galaxy (S0) located in the direction of the constellation Capricornus. It has a declination of -25° 29' 15" and a right ascension of 21 hours, 07 minutes, and 20.5 seconds, and is estimated to be 455 million light-years from the Milky Way. The galaxy NGC 7017 was discovered alongside NGC 7016 on 8 Jul 1885 by Francis Leavenworth.
Supernova SN 2003gj was discovered in NGC 7017 on June 30, 2003, by M. Moore and W. Li as part of the LOTOSS program at the Lick Observatory. This supernova was of Type Ia and its magnitude at the time of discovery was 17.7.
