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i Bootis B, 44 Bootis B

Eclipsing Binary Variable of W Ursae Majoris type in Bootes

Right Ascension 15 : 03.8 (h:m)
Declination +47 : 39 (deg:m)
Distance 42 (ly)
Visual brightness 6.5 .. 7.1 (mag)
Period 0.268 (days)
Spectra type G2V + G2V

This star has been identified as variable by Sir William Herschel in 1785. It is an exclipsing variable of W Ursae Majoris (W UMa) type, i.e., a contact system. This binary star is the fainter component of a visual binary system, which is thus a triple star called i Bootis (according to Bayer) or 44 Bootis (according to Flamsteed).

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Hartmut Frommert
Christine Kronberg