Gaia Sausage

At least eight globular clusters were added to the Milky Way along with 50 billion solar masses of stars, gas and dark matter.

The outermost points of their orbits are around 20 kiloparsecs from the Galactic Center at what is called the "halo break".

[4] These stars had previously been seen in Hipparcos data [5] and identified as originаting from an accreted galaxy.

[1] This could also account for its stellar population of over a million stars, which is unusually large for a globular cluster.

The stars from this dwarf orbit the Milky Way core with extreme eccentricities on the order of about 0.9.

NGC 2808 , possible old core of Gaia Sausage
The Milky Way Galaxy
The Milky Way Galaxy