Raptor 2
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
Raptor 275 was designated Raptor 2 when it participated in the scout party dispatched to Kobol in Kobol's Last Gleaming, Part I.
A Raptor 2 is again referred to in Fragged. It may or may not have been the same actual craft, as Galactica had three surviving Raptors by this point (two destroyed in Kobol's Last Gleaming, Part I, and one scrapped for parts 90 minutes earlier).