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					Originally Posted by Ardent  Presumably this would also explain why they were incorporated into Durin's emblems on the gates of Moria. Wasn't Eregion/Hollin part of the realm of Arnor? | 
	
 I suppose it depends whether or not the stars of Kheled-zāram were the same as the Sickle of the Valar.
Here's a link I stumbled upon which argues that Durin's Crown was a different constellation to the Valacirca:
http://dwarrowscholar.mymiddleearth....ven-astronomy/