Proceedings of the Royal Society of London/Volume 2/Determination of the North Polar Distances and proper Motion of Thirty fixed Stars
Determination of the North Polar Distances and proper Motion of Thirty fixed Stars.By John Pond, Esq. Astronomer Royal, F.R.S.Read June 15, 1815.[Phil. Trans. 1815, p. 384.]
In the former catalogue which the Astronomer Royal gave in 1813, he estimated the probable extent of error at not more than one fourth of a second; and his present catalogue, which may be resumed to be improved by a greater number of observations, confirms the justness of that estimate; since the greatest difference observable is not more than two tenths of a second.
A comparative catalogue is also given of the places of the same stars in 1756, as deduced from the observations of Dr. Bradley; and thence is added a column of annual proper motions for each of the stars in the collection.