of massive, hydrogen-fusing star often appears blue-white, and is usually stated to be white or bluish by modern observers, but earlier observers often described Beta Librae as the only greenish star visible to the naked eye. There seems to be no generally accepted explanation for why some observers see it as green. The small periodic variations in the magnitude of Beta Librae suggest the presence of a companion star which is not directly observable from Earth. However, it is categorized as a single star. See also List of stars in Libra Alpha Librae (Zubenelgenubi) References External links – Find more Arabic Star Names and their meanings. Librae, Beta B-type main-sequence stars Libra (constellation) Zubeneschamali Librae, 27 074785 Suspected variables 5685 135742 Durchmusterung objects