μ Bo÷tis


Mu Bo÷tis is a wonderful triple system. Binoculars show the first companion but you'll need a medium sized telescope to reveal that this companion also has its own companion, with a 246 year orbit.
      AB: 4.3, 7.1; 171║, 108"
      B-Bb: 7.1, 7.6; 4║, 2.3"

Mu Boo is found by moving up the eastern edge of the kite-shaped asterism. From Arcturus follow the bright stars northeast, from epsilon, then delta, and finally mu, just barely in the same binocular field as delta: binoculars.

You'll note that beta Bo÷tis is in the same region, just out of view to the northwest.

All files associated with The Constellations Web Page are
ę 1999-2014 by Richard Dibon-Smith.