What is this pink target?

Having set another satellite as a target, I have this pink marker on my navball:

What is it?

2 Answers

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.

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.