Usoro nhazi ụyọkọ kpakpando

The galactic coordinate system is a celestial coordinate system in spherical coordinates, na Sun dị ka etiti ya, bụ isi direction kwekọọ na nso center nke Milky Way Galaxy, na isi ụgbọ elu yiri ihe approximation nke galactic ụgbọ elu ma ike ya.  ugwu.  Ọ na-eji ọhụrụ aka nri, nke nọmba na nhazi dị mma n'ebe ugwu na n'ebe ụmụaka na ụgbọ elu bụ isi .
Longitude (akara l ) na-atụ anya nkuku ihe dị n'ikiri ụkwụ ụmụaka n'ihu ala galactic site na Galactic Center.  N'ihe dị ka ogologo mbara ala, a na-atụ ogologo ogologo nke galactic na ogo (°).