Note 58 — Chapter II · Copernicus and His Times.
Reading edition
It has been claimed that Regiomontanus knew of the earth's motion around the sun a hundred years before Copernicus; but a German writer has definitely disproved this claim by tracing it to its source in Schöner's Opusculum Geographicum (1553) which states only that he believed in the earth's axial rotation. Ziegler: 62.