In the sky, it appears behind the Milky Way's galactic plane, and so it is reddened by 0.194 magnitudes.

[2] With a luminosity of 1.8×107 L☉ and a stellar mass of 19.73×106 M☉, it is the brightest and most massive of the Andromeda Galaxy's dwarf spheroidal galaxy satellites.

[2] The Cassiopeia Dwarf was found in 1998, together with the Pegasus Dwarf, by a team of astronomers (Karachentsev and Karachentseva)[4] in Russia and Ukraine.

Instead, both seem dominated by very old stars, with ages of up to 10 billion years.

The main period of star formation occurred around 6.2 billion years ago, and 90% of the star formation in the Cassiopeia Dwarf was done by 5 billion years ago.