However , the IAU Working Group on Planetary System Nomenclature later decided to add the nominative case ending - r to the base form Suttung .
Its name was announced as Suttung in IAU Circular 8177 .
The IAU Working Group on Planetary System Nomenclature later decided to add the nominative case ending - r to the base form Suttung .
Its name was announced as Suttung in IAU Circular 8177 .