Sagittarius ω Sagittarii A Terebellum From Ptolemy's τετράπλευρον, a quadrangle of stars of which ω Sag is the brightest[citation needed]
Sagittarius ω Sagittarii A Terebellum From Ptolemy's τετράπλευρον, a quadrangle of stars of which ω Sag is the brightest[citation needed]