The Bayer designation Upsilon Cassiopeiae (υ Cas / υ Cassiopeiae) is shared by two star systems, in the constellation Cassiopeia:

They are separated by 0.3° on the sky.[1]

References

  1. ↑ MacRobert, Alan (September 23, 2016), "This Week's Sky at a Glance, September 23 – October 1", Sky & Telescope, AAS Sky Publishing, LLC, retrieved 2019-10-20.
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