IC 3505

IC 3505 is a barred spiral galaxy located 640 million light-years away from the Solar System in the Coma Berenices constellation. With an apparent size of 0.95 by 0.35 arcmin, IC 3505 has an estimated diameter of 170,000 light-years, making it slightly larger compared to the Milky Way. It is categorized as a LINER galaxy with an active galactic nucleus emitting weak emission-lines.
IC 3505 was discovered by Royal Harwood Frost on May 7, 1904. According to Frost when he saw the object for the first time, he listed it as a type SBc at right ascension "12 34 10.3" and declination "+15 58 07". Despite being listed in the Virgo Cluster catalogue as VCC 1542, it is not part of the Virgo Cluster but a background galaxy.
Two supernovae have been discovered in IC 3505. SN 2019iaz was discovered on June 21, 2019, by C. Fremling from Caltech on behalf on Zwicky Transient Facility and AT 2023gpz which was discovered by K. De on April 21, 2023.