Spoilers for The Force Awakens of course.
At the end of Episode VII, R2-D2 and BB-8 assemble the starmap to the location of Luke Skywalker. This discovery is significant not only because of Skywalker, but also due to the fact that it holds the ruins of the very first Jedi Temple (hinted at in the movie, and confirmed in the junior novelization).
But which planet is it exactly? It’s never named in the film, and it’s not one we’ve seen in any other canon material so far. However, the script for The Force Awakens has recently emerged online via the Writers Guild of America, and it contains the official location name of the planet… Ahch-To.
As for why that name was chosen, some fans have pointed out that “Ahch” means “brother” in Hebrew; while phonetically, Ahch-To sounds kind of like “Act 2.”
Meanwhile on Twitter, Pablo Hidalgo (Creative Executive in the Lucasfilm Story Group) confirmed that this isn’t a placeholder name:
When asked if that name had been “locked in,” Hidalgo replied with a “yep.”
So there you go. The location of the first Jedi Temple? Ahch-To (gesundheit).