Ah yes.<p>There&#x27;s a lower point on the cable where you&#x27;re already in an elliptical orbit with the perigee at the altitude you want.<p>For a target orbit of 400km, that happens at about 23.8Mm, 57% of the way up the cable. At that point you just have to let go of the cable and you&#x27;ll only need a circularizing burn when you reach 400km: Δv of ~2,137m&#x2F;s.<p>This is not taking into account the further savings from aerobraking as I don&#x27;t know how to calculate that.