The star chart was a map of the constellations found within Wan Shi Tong's Library.
After escaping from the library and losing Appa, the scroll proved useful in guiding the lost Team Avatar through the Si Wong Desert at night. As the desert had no known landmarks nearby, Katara used the star chart to navigate them through the barren land.
- The constellations shown on the star chart closely resemble the northern constellations of Earth, with the equivalent of Earth's North Star centered on the chart, presumably allowing those who use it to find true north when in the Northern Hemisphere of the Avatar World.
- ↑ "The Library". John O'Bryan (writer) & Giancarlo Volpe (director). Avatar: The Last Airbender. Nickelodeon. July 14, 2006. No. 10, Book Two: Earth
- ↑ "The Serpent's Pass". Michael Dante DiMartino, Joshua Hamilton (writers) & Ethan Spaulding (director). Avatar: The Last Airbender. Nickelodeon. September 15, 2006. No. 12, Book Two: Earth
- ↑ "The Desert". Tim Hedrick (writer) & Lauren MacMullan (director). Avatar: The Last Airbender. Nickelodeon. July 14, 2006. No. 11, Book Two: Earth
- ↑ From older Avatar: The Last Airbender official site, originally on Nick.com (link). No longer updated.