243 Ida as y fo-phlannad echey, Dactyl. She Dactyl y chied fo-phlannad jeh roltageagh erbee va feddynit magh.
She mynphlanaidyn ad roltagee, as ta'n enmys shen currit er mynphlanaidyn Chorys ny Greiney sthie. Ta'n enmys planaideen currit er ny fir smoo. She reddyn creggagh beggey t'ayndaue ta cruinnaghey yn Ghrian. Ren Giuseppe Piazzi feddyn magh y chied roltageagh, Keres, 'sy vlein 1801. Ec y traa shen, v'eh er smooinaghtyn dy nee planaid noa v'ayn. Ec y traa t'ayn, t'eh er credjal dy vel ny smoo na 600,000 dy roltagee ayns Corys ny Greiney, as y chooid smoo jeu 'syn ard eddyr cruinlee Vart as Iupiter. She yn Chryss Roltageagh yn ennym ta currit er yn ard shoh. She Keres y roltageagh smoo as eh 933 km (580 mi) er lheead. Rere shen, as rere troyn elley, t'eh coontit myr mynphlannad ny planaid crivassanagh. She 1991 BA y roltageagh sloo as eh eddyr 5 m as 10 m (eddyr 15 tr as 30 tr) er lheead.
