The three numbers that compose its name indicate, respectively, the galactic longitude and latitude, and velocity towards Earth in km/s.
[2] This cloud of neutral hydrogen (detectable via 21 cm H-I emissions), unlike other HVCs shows a rotational component and dark matter.
It is also the first HVC discovered not associated with the Milky Way galaxy or subgroup (subcluster).
Astronomer Josh Simon considers it a candidate for being a dark galaxy.
[2] With its rotation, it may be a very low density dwarf galaxy of unused hydrogen (no stars), a remnant of the formation of the Local Group.