To try to get it going again...
The Wain to Bilbo or Frodo was what the part-constellation called The Plough or the Big Dipper is to us: so Elrond would call it Valacirca, or the Sickle of the Valar.
I've forgotten if we're using The Book of Lost Tales: but if we are, alternate proposals for it were the Seven Stars, the Sign of Doom, the Silver Sickle, or the Seven Butterflies
The Wain to Bilbo or Frodo was what the part-constellation called The Plough or the Big Dipper is to us: so Elrond would call it Valacirca, or the Sickle of the Valar.
( Silmarillion, Quenta Silmarillion, Ch. 3, Of the coming of the Elves and the captivity of Melkor.)And high in the North, as a challenge to Melkor, (Varda) set the crown of seven mighty stars to swing, Valacirca, the Sickle of the Valar and sign of doom.
I've forgotten if we're using The Book of Lost Tales: but if we are, alternate proposals for it were the Seven Stars, the Sign of Doom, the Silver Sickle, or the Seven Butterflies