Usoro nhazi ụyọkọ kpakpando

Ihe ngosi nke onye na-eme ihe nkiri nke Milky Way Galaxy, na-egosi ogologo mbara igwe.  Otu vector dabara na ụgbọ elu nke mgbaama, na 0° longitude, nwere nke ọma nwere ebe Galactic ma na-agbakọ aka mgbochi.  Ụyọkọ ndị dị obere na-adabere n'ebe ọ ALA nwere ogologo ogologo 180 ° na-abata

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 .

Elizabeth galactic na-eji Sun dị ka akụkụ.  Galactic longitude ( l ) ka a na-eji ntụzịaka bụ́ isi site na ọmụmụ ruo n'etiti mbara igwe dị n'egwuelu galactic, ebe latitude galactic ( b ) na-atụ ihe ahụ n'elu ụgbọ elu galactic .

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 (°).