What is the name of the planet where Obi-Wan learns the dart is from?

The story behind the answer

After recovering Zam Wesell’s poisoned saberdart in Attack of the Clones, Obi-Wan consults Dexter Jettster, who identifies it as Kaminoan. Although the planet has been erased from the Jedi Archives, Obi-Wan extrapolates its location from gravitational anomalies and discovers a storm-lashed ocean world hosting secret cloning facilities—the origin of the Republic’s clone army, commissioned under the name Sifo-Dyas and modeled on Jango Fett.

It’s not Geonosis (arid Separatist foundries and arena), Coruscant (city-planet capital with the Jedi Temple and Dex’s Diner), or Naboo (Padmé’s lush homeworld). Only this remote ocean world is tied to the saberdart and the creation of the clones.