author: arnold kohlschütter

Handbuch der Astrophysik: Das sternsystem, 2. t., bearb. von F. C. Henroteau, H. Ludendorff, K. G. Malmquist, F. J. M. Stratton. 1928

... class B and short - period of class K. 123. The Masses of the Binary Stars . The total mass of a visual binary can ... mass , length , and time are respectively , the Sun's mass , the astronomical unit and the year . If the proper motion ...

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