Class-8 probe

A class-9 probe or more specifically class VIII mid-range multimission warp probe was a type of probe used by the Federation Starfleet in the 24th century.

The probes were housed within modified photon torpedo casings and had a range of 1.2x102 light years. They were powered by a matter/antimatter warp field sustainer engine which could propel them at warp 9 for 6.5 hours. In addition to standard sensors the probes could be fitted with mission specific modules. 

The typical uses of this type of probe ranged from the examination of particles and energy fields to early-warning and reconnaissance missions.