(covers information from an alternate timeline)
In 2154, as Captain Jonathan Archer of Enterprise NX-01 was preparing to undertake a suicide mission to destroy the Xindi weapon in the Delphic Expanse, Temporal Agent Daniels transported Archer to an observation deck aboard the Enterprise-J to witness the battle, while the vessel was in a trans-dimensional disturbance. It was Daniels' hope that Archer could be convinced to abandon his suicide mission and attempt to make peace with the Xindi, informing Archer that, without him, the Federation would never come into existence and the Sphere-Builders would remain unopposed. Archer was unconvinced, however, and demanded that Daniels return him to his own time.
|The Starships Enterprise|
|United Earth: XCV 330 • NX-01|
|Federation: NCC-1701 • NCC-1701-A • NCC-1701-B • NCC-1701-C • NCC-1701-D • NCC-1701-E • NCC-1701-J|
|Terran Empire (mirror universe): NX-01 • NCC-1701|
|Federation (alternate reality): NCC-1701 • NCC-1701-A|
Since the Star Trek: Enterprise writing staff was pressed for time, there wasn't a lot of deliberation over naming this vessel. Manny Coto later reflected, "We were just sitting around the room and said, 'What should it be?' 'J.' 'OK.'" (Star Trek: Communicator issue 152, p. 50)
The Enterprise-J appears in Agents of Yesterday, the third expansion to Star Trek Online. After pursuing the Temporal Liberation Front (made up of the Sphere-Builders, the Na'kuhl, the Vorgons, and the Krenim) throughout time and space, the player characters travel to the 26th century to defeat them at the Battle of Procyon V. With the aid of Starfleet legends (and temporal agents) Montgomery Scott and Pavel Chekov, the player installs the Tox Uthat onboard the Enterprise-J, which allows it to destroy the Sphere-Builders' spheres and dissipate their Expanse in the Procyon system. The captain of the ship is a female joined Trill, a future host of the Dax symbiont.