It is only slightly outside the zero-velocity surface of the Local Group.

[4] SagDIG is a much more luminous galaxy than the Aquarius Dwarf and it has been through a prolonged period of star formation.

[5] This has resulted in it containing a rich intermediate-age population of stars.

Twenty-seven candidate carbon stars have been identified inside SagDIG.

Analysis shows that the underlying stellar population of SagDIG is metal-poor (at least [Fe/H] ≤ −1.3).