Destiny 2’s Ascendant Anchors is a collectable introduced in Season of the Lost, running between August 2021 to February 2022.
These are purple objects which can appear in Patrol zones and the Shattered Realm, and are visible from afar thanks to a glowing purple light.
That said, some are easier to find than others – and with each one found, you earn a small amount of Parallax Trajectory.
