An important relationship between an object's astronomical (geometric) albedo, absolute magnitude and diameter is given by:
ɐn ɪmpˈoːɹtənt ɹᵻlˈeɪʃənʃˌɪp bᵻtwˌiːn ɐn ˈɑːbdʒɛkts ɐstɹənˈɑːmɪkəl dʒˌiːoʊmˈɛtɹɪk ælbˈiːdoʊ, ˈæbsəlˌuːt mˈæɡnɪtˌuːd ænd daɪˈæmɪɾɚɹ ɪz ɡˈɪvən bˈaɪ: