A Magellanic spiral galaxy is a spiral galaxy with only one spiral arm. Magellanic spiral galaxies are classified as the type Sm ; the prototype galaxy and namesake for Magellanic spirals is the Large
NGC 55, also known as the String of Pearls Galaxy, is a Magellanic type barred spiral galaxy located about 6.5 million light-years away in the constellation Sculptor. It was discovered on 7 July 1826
Magellanic barred spiral galaxy NGC 55 imaged by the La Silla Observatory