NGC 5694

NGC 5694 (also known as Caldwell 66) is a globular cluster in the constellation Hydra. It was discovered in 1784 by William Herschel.

Characteristics
This globular cluster is located at a distance of 114000 ly from the Sun and 96000 ly from the Galactic Center and is one of the oldest known globular clusters in the Milky Way Galaxy, forming nearly 12 billion years ago.

Its chemical composition is highly peculiar, being highly (to nearly solar levels) enriched in alpha elements, suggesting an extragalactic origin before being captured by the Milky Way.