...radius and period in the circular 428 days' revolution are systematically variable ; the former between about eight feet and eighteen feet, the latter between...apsides is either fixed, or, if variable, revolving only at a very slow rate. 6. Besides these two motions of relatively short period, there is distinct...

...their character to those in the 428-days' revolution; but whether they are the result of real chauges in the form and dimensions of the ellipse, or the effect of an apsidal motion of long period, can not at present be determined from the observations available. All that can be said is that observations...

...radius and period in the circular 428 days' revolution are systematically variable ; the former between about eight feet and eighteen feet, the latter between...apsides is either fixed, or, if variable, revolving only at a very slow rate. 6. Besides these two motions of relatively short period, there is distinct...

...those in the 428 days' revolution ; but whether they are the result of real changes in the form ar,d dimensions of the ellipse, or the effect of an apsidal...from the observations available. All that can be said i - that observations during five years show that the line of apsides is either fixed, or, if variable,...

...velocity in the annual period which are complementary in their character to those in the 428-days' revolution; but whether they are the result of real...or the effect of an apsidal motion of long period, can not at present be determined from the observations available. All that can be said is that observations...