The Achernar subclass of Constitution-class heavy cruisers were on active duty in Starfleet during the late 23rd century. The first ships of the class were commissioned in the 2260s. (Star Fleet Technical Manual)
Nomenclature[]
The subclass and lead ship were named after Achernar, the primary star of a binary consisting of Alpha Eridani A (spectral class B6) and B (spectral class A). The two stars are about 139 light-years from Earth.
External link[]
- Achernar class article at Memory Beta, the non-canon Star Trek wiki.