AGC 198691 is a small galaxy with one of the smallest known metallicities. It has a nickname of Leoncino as it is near

Leo Minor Leo Minor is a small and faint constellation in the northern celestial hemisphere. Its name is Latin for "the smaller lion", in contrast to Leo, the larger lion. It lies between the larger and more recognizable Ursa Major to the north and Le ...

. The galaxy appears blue due to the presence of several bright blue stars. There is also an

HII region An H II region or HII region is a region of interstellar atomic hydrogen that is ionized. It is typically in a molecular cloud of partially ionized gas in which star formation has recently taken place, with a size ranging from one to hundreds ...

present that contains oxygen. It is important as an indicator of the kind of galaxies first formed in the Universe.

References

Dwarf galaxies Leo Minor {{galaxy-stub