They indicate the position of planets and other places in the Poptropica solar system. In the saucer Excalibur, the only one that will work is X-56 Y-52 (from Mordred's missing journal page) which is the Pewter Moon. All the planets on the Queen's list are too far away for your power source.
x83 y49
The planet Poptropica has the same coordinates as the Pewter Moon : X-56 Y-52.
If you mean the ones that the Queen gives you from Astro-Knights they are the planets at which the three knights are at.
on astro knights island
The coordinates are: 83,20.
astro knights island
astro knights
The FIRE PLANET is at coordinates X-83 Y-20, up and to the right from the planet Poptropica.
Go on youtube
After the Astro Knights island release in June 2009, the next regular feature was Poptropica's Haunted House in October 2009. (Available through the Poptropica Store) The next scheduled island was Counterfeit Island.
Astro Knights
you have to find the UFO in astro knights island.