Mariposa
From Halopedia, the Halo wiki
Template:Ratings The "Rings of Mariposa" were mentioned in the story Second Sunrise over New Mombasa in the Halo Graphic Novel.[1] It's therefore likely to be a planetary gas giant. At some point in time, "the 6th Battle Group outmaneuvered and escaped" what was presumably a Covenant fleet near the Mariposa.
Sources
Mariposa means "butterfly" in Spanish.
- ^ Halo Graphic Novel, Pg. 86