What is this pink target?
Having set another satellite as a target, I have this pink marker on my navball:
What is it?
Solution 1:
That is your anti target. It's the direction that points away from your target. On the opposite side you should see a circular icon of the same colour which points towards your target.
Solution 2:
They point towards (and away) from your target, the circular one is the prograde (towards the target) whilst the pointy one (shown in the question) is the retrograde.