[Half-hours with the Telescope by Richard A. Proctor]@TWC D-Link book
Half-hours with the Telescope

CHAPTER IV
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But he is found to be some three times as far from us as the small star 61 Cygni, and more than seven times as far from us as [alpha] Centauri.
The star [delta] Bootis is a wide and unequal double, the smaller component being only of the ninth magnitude.
Above Alkaid the last star in the tail of the Greater Bear, there will be noticed three small stars.

These are [theta], [iota], and [kappa] Bootis, and are usually placed in star-maps near the upraised hand of the Herdsman.

The two which lie next to Alkaid, [iota] and [kappa], are interesting doubles.

The former is a wide double (see Plate 5), the magnitudes of components 4 and 8, their colours yellow and white.

The larger star of this pair is itself double.


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