No CrossRef data available.
Published online by Cambridge University Press: 15 September 2014
The object of the work was—
1st, To determine the mean solar horizontal parallax.
2nd, To compare the tabular and observed motion of the planet, with a view to ascertain whether any periodic perturbations of short period occur,—such, for example, as would be accounted for by an error in the adopted value of the lunar equation.
The results depend on the following series of observations :—
A. Meridian observations of the comparison stars and of the planet made at twenty-one different observatories during the opposition of 1889.