Binary.period ============= The period of a binary system. Along with a mass, the binary period is used to define the Roche lobe of the system, which in turn can be used to see the effect of eclipses on the spectrum. Defining the system with a secondary also initializes the outer radius of the disk. Type Double Unit Hours Values Greater than 0 File `setup_star_bh.c `_ Parent(s) * :ref:`System_type`: ``cv``, ``bh``