NGC 3504

NGC 3504 is a barred spiral galaxy in the constellation Leo Minor.
There is a large amount of molecular gas centered on the galactic nuculeus. Compared with other barred spiral galaxies, NGC 3504 is in an early phase of its evolution.
The mass of NGC 3504 has been difficult to narrow down, but it is believed to be between 2.5*109 M⊙ and 9*109 M⊙.