ξ Bo÷tis


Xi Bo÷tis is a marvellous binary for small telescopes - a yellow primary and orange (or pinkish) companion: 4.8, 7.1, PA 318║, separation 6.6" and an orbit of 151.5 years.

Xi Bo÷tis is directly east of Arcturus, slightly over two binocular fields: binoculars.

The companion orbits every 151 years, describing a perfectly egg-shaped orbit. Unlike most rapidly orbiting binaries, the companion is at a quite wide separation. Currently the position angle is 321║ and the separation 6.8". The binary is one of the closest at 22 light years.

In the same field is pi Bo÷tis, a pleasant binary of two blue-white stars: 4.9, 5.9; PA 109║ and separation 5.6".

Two binocular fields due north is epsilon, a marvelous binary of contrasting colours, orange/blue-green. Click on this star on the map for its details.

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ę 1999-2014 by Richard Dibon-Smith.