Gamma Eridani

g Eridani


With xi Eridani at the upper left of your field of vision you should see the two omicron Eridani stars just off centre. They resemble a faint version of Castor and Pollux (being of 4.0 and 4.5 visual magnitude).
    In reality, the omicron stars are not associated with each other -- omicron1 is 125 light years away while omicron2 is a very close 16.4 light years.

Before passing through the 'narrows' here, you might pause briefly and study omicron2. The star, also known as 40 Eridani, is the primary of a triple system. Its ninth-magnitude companion, a white dwarf, may not be visible in binoculars, but it is easily seen in medium sized telescopes.     If your scope is large enough, you'll also find an eleventh-magnitude red dwarf gravitationally attracted to the white dwarf, making it one of the more compelling trios in the heavens.

Now -- with the naked eye or binoculars -- look to the southwest of the twin omicrons and you'll find gamma, Zaurak, a rather reddish star which also has a faint companion.

From Zaurak you climb once more, up to delta: fourth step.


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© 1999-2000 by Richard Dibon-Smith.