Differential impact cratering of Saturn's satellites (Wiley) [1]
The point from which the Sun appears to be moving away, situated roughly at R.A. 6h, Dec -30° [10]. antapex
Research into lunar "cold spots" indicates that higher impact rates on the leading (apex) hemisphere contribute to the more rapid fading of these features compared to those on the trailing (antapex) side [7]. situated roughly at R.A. 6h