d Pegasi

Delta Pegasi is rarely called ‘delta’ since it also goes by the name of alpha Andromedae (Sirrah or Alpheratz).

The star forms the northeastern corner of The Great Square of Pegasus: binoculars.

In the same region is the famous binary 85 Pegasi, with a very rapid orbit of 26.3 years, needing a large telescope to resolve the companion (currently at a separation of 0.7" and PA of 180º, due south of the primary).


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© 1999-2000 by Richard Dibon-Smith.