Mariposa

Mariposa is most likely a planetary gas giant. At some point in time, the UNSC Navy's Sixth Battle Group outmaneuvered and escaped what was presumably a Covenant fleet near the rings of Mariposa.

Trivia
Mariposa means “butterfly” in the Spanish language.

List of appearances

 * Halo Graphic Novel
 * Second Sunrise Over New Mombasa