I te tau 1985 i matapae tuatahi ai a Jeffrey N. Cuzzi rāua ko Jeffrey D. Scargle i te tīariari o tētahi marama i roto i te Encke Gap, i runga anō i ngā pito ngaru o te ārai e tohu ana i tētahi whakararuraru ā-papa. I te tau 1986 i whakatauira a Showalter rāua ko ētahi atu i tōna porohita me tōna taumaha mā te whakatauira i tōna ara ā-papa. I tae rātau ki tētahi matapae tino tika o te 133,603 ± 10 km mō te haurua nui me te taumaha o te 5<unk>10×10−12 Saturn, ā, i whakatauira he kotahi anake te marama i roto i te ārai o Encke. Ko te haurua nui tūturu e rerekē ana i te 19 km, ā, ko te taumaha tūturu ko te 8.6×10−12 o Saturn. Pātai: E hia te rerekētanga o te haurua nui?
19 kiromita