95 Herculis

Centring 100 Herculis in your glasses, move one binocular field south and you will find centred in your field of view 95 Herculis.

95 Herculis is a splendid double star, gold and silver (or perhaps a whitish primary and icy blue companion):
      95 Her (Struve 2264): 4.8, 5.2; 257, 6.2".

The different colours stem from the fact that the two stars are at different stages in their evolution. The primary is a white class giant while the companion is a yellow-white giant. However their slightly different magnitudes, coupled with their proximity, produces an extraordinary display of colours.

The two are very slowly orbiting a common gravitational point, taking well over 10,000 years to complete one cycle.

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1999-2014 by Richard Dibon-Smith.