16.8°N 21.9°WPromontorium Archerusia (; Latin for "Cape Archerusia") is a headland on the near side of the Moon. It separates the lunar mares of Mare Serenitatis and Mare Tranquilitatis. Its coordinates are 16.8°N 21.9°W.[1]
Promontorium Archerusia was named by Johannes Hevelius[2] and is a misspelling of Acherusia, a cape on the Black Sea near Heraclea in ancient Bithynia (now Karadeniz Ereğli in Turkey).[3] [1]