<prompt> Qedela umusho olandelayo: Ngo-1728,  <response>: umlilo omkhulu waseCopenhagen wabhubhisa wonke amaphepha nokubuka okwenziwa nguRømer, owafa ngo-1710. UHorrebow wabhala incwadi ethi Basis Astronomiae 173435, echaza impumelelo yesayensi eyenziwa nguRømer. Amaphepha nemishini kaHorrebow kwabhujiswa emlilweni ofanayo. UHorrebow wanikezwa isibonelelo esikhethekile esivela kuhulumeni ukuze alungise indawo yokubheka nezinsiza. UHorrebow wathola usizo olwengeziwe kumuntu ocebile owayemvikela. 