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Updated: May 27, 2025
Another guess gives epsilon1 a period of one thousand years, and epsilon2 a period of eight hundred years. Hall, in his double-star observations, simply says of each, "A slow motion." Purely by guesswork a period has also been assigned to the two pairs in a supposed revolution around their common center, the time named being about a million years.
Between epsilon1 and epsilon2, and placed one on each side of the joining line, appear two exceedingly faint specks of light, which Sir John Herschel made famous under the name of the debillissima. They are of the twelfth or thirteenth magnitude, and possibly variable to a slight degree.
The northern-most pair is named epsilon1, the magnitudes being fifth and sixth, distance 3", p. 15°. The other pair is epsilon2, magnitudes fifth and sixth, distance 2.3", p. 133°. Each pair is apparently a binary; but the period of revolution is unknown. Some have guessed a thousand years for one pair, and two thousand for the other.
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