Sternbild Reiterlein and Rilke's Sonnet to Orpheus on Mizar and Alcor

In the eleventh of the first Sonnets to Orpheus, Rilke teases us as to whether there is an asterism "Rider" - and of course there is; Mizar and Alcor [Alkor], the "Reiterlein".

This has been ignored by translators, who can then make no sense of

  Neue Weite. Und die zwei sind eins.

In pursuit of a partial rhyme, Willis Barnstone veers off into 'galaxy'.

Mizar and Alcor are not just two stars.  Rilke has chosen "the little rider".

These two are bound as a binary, known now to be a sextet, part of the U. Ma. Moving Group drifting past us through our arm of the galaxy: not of this world of ours and not always to be with those on earth as a 'Sternbild'.

The U. Ma. Moving Group has been known since 1869.