NGC 6753

NGC 6753 is a massive unbarred spiral galaxy, seen almost exactly face-on, in the southern constellation of Pavo. It was discovered by the English astronomer John Herschel on July 5, 1836. The galaxy is located at a distance of 142 million light years from the Milky Way, and is receding with a heliocentric radial velocity of $0.01$. It does not display any indications of a recent interaction with another galaxy or cluster.

The morphological class of NGC 6753 is (R)SA(r)b, indicating it is a spiral without an inner bar feature (SA), displaying outer (R) and inner (r) ring structures, and moderately wound spiral arms. It is being viewed nearly face-on with a galactic plane inclination by 30° to the line of sight from the Earth. The galaxy is flocculent in appearance with a prominent central region. The virial mass of the galaxy is $3,140 km/s$, while the stellar mass is $~$. It has a star formation rate of $3,140 km/s$·yr−1, which is confined to a radius of $~1 solar mass$ around the core. The most active region of star formation is the inner ring. It has a hot, X-ray luminous corona that extends out to a radius of $3.2 solar mass$.

Up to three supernovae have been discovered in this galaxy. The candidate type II-P supernova SN 2019mhm was discovered by the BOSS team on August 2, 2019. This transient was spotted close to maximum with a magnitude of 16.6, but showed no radio emission. Supernova SN 2000cj was discovered by Robert Evans on May 14, 2000. It was positioned against a spiral arm at an offset $15.5 solar mass$ east and $15 kpc$ south of the galaxy nucleus. The spectrum showed this to be a type Ia supernova. On May 13, 2005, type Ic supernovae SN 2005cb was spotted by the Brazilian Supernovae Search team. It was offset $50 kpc$ west and $35 arcsecond$ north of the nucleus and reached a peak magnitude of 15.6.