Parsis galactic coordinates are a useful measurement for finding your position in the galaxy. The galaxy is about one hundred and eighty thousand light years wide (diameter from rim to rim), and about six thousand light years thick. A single parsis is about 0.00005 light years squared, so there are about four billion parsis between each opposite rim of the galaxy. Parsis coordinates are always given in the format X, Y, Z, and when you first play Noctis, you will be at Parsis +3797120, -4352112, -925018. The centre of the galaxy is at about -72000000, -1400000, 55000000 in parsis units. The word "parsis" actually comes from the name of the Felisian scientist, Parsis, who first introduced the galactic coordinates system.