RAVShANOII SITORA

RAVShANOII SITORA , quvvai rushnoii sitora, yane buzurgii se­li rushnoii sitora, ki ba kunji fazavii vohidi muvofiq meoyad. Istilohi «Ravshanoii sitora» hammanoi istilohi «ravshanoi»-i fotomstriyai umumi nest. Ravshanoii sitora odatan bo vohidhoi ravshanoii Oftob, ki ba 3.1027 shami baynalkhaqi (3, 8.1033 erg/son) baro­bar ast, ifoda meshavad. Ravshanoii baze sitoraho az hamdigar farqi kulli dorand. Macalan, afkanishi sum­mavii (bolometrii) baze sitoraho dar qiyosi vohidhoi ravshanoii Oftob nimmillion karat ziyod (sitoragoni favqulazimi klassa spektrii 0) boshad, afkanishi sitoragoni digar sadho, hazorho marotiba khurd ast. Takhmine meravad, ki sitoragoni ravshanoishon az in ham pasttar mavjudand. Ravshanoii si­tora (L) bo qadri sitoravvi mutlaq (M) bo formulai M = — 2,51gL + 4,77 muayyan karda meshavad.