| − | </ref>The star varies in brightess only by 0.09 magnitudes with a period of 0.077 days or a little under two hours.<ref name=universeguide/><ref>{{cite web|url=http://www.sai.msu.su/gcvs/cgi-bin/search.cgi?search=V566+Cas|title=V566 Cas|accessdate=December 29, 2021|publisher=sai.msu.su}}</ref> The star is not known to possess any [[exoplanet]]s. | + | </ref>The star varies in brightness only by 0.09 magnitudes with a period of 0.077 days or a little under two hours.<ref name=universeguide/><ref>{{cite web|url=http://www.sai.msu.su/gcvs/cgi-bin/search.cgi?search=V566+Cas|title=V566 Cas|accessdate=December 29, 2021|publisher=sai.msu.su}}</ref> The star is not known to possess any [[exoplanet]]s. |