Binary System
- Circumprimary disk, is where a disk orbits the primary (i.e. more massive) star of the binary star system.
- Circumsecondary disk is one around the secondary (i.e. less massive) star of the binary star system.
- Circumbinary disk, is where a disk orbits both the primary and the secondary of the binary system.
Read more about this topic: Circumstellar Disk
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—Franklin D. Roosevelt (1882–1945)