Apsides

(Newton must have been mystified by the failure of his seemingly parallel derivation of the 9 year precession of the line of apsides to achieve better than 50 percent agreement.) ❋ Smith, George (2007)

Nobody could ascertain the exact purpose of the set of maneuvers; they were just "orientation changes," according to the Earth scientists, that had altered the inclination and line of apsides of the Rama orbit. ❋ Clarke, Arthur C. (1989)

But far older than even these are the colossal grim circles of saints and apostles who cling to the roof of the choir, and yield in size only to the awful figures of the Saviour, the Virgin, and Saint Paul, enthroned in the _apsides_ of the nave and aisles. ❋ Various (N/A)

Prior to the discovery of those laws the Sun, though acknowledged to be the centre of the system, did not appear to occupy a central position as regards the motions of the planets; but Kepler, by demonstrating that the planes of the orbits of all the planets, and the lines connecting their apsides, passed through the Sun, was enabled to assign the orb his true position with regard to those bodies. ❋ Thomas Nathaniel Orchard (N/A)

At the perihelion this excess of tangential velocity creates a resistance, which urges the planet towards the sun, and at the aphelion, the deficiency of tangential velocity urges the planet from the sun, -- the maximum effect being at the apsides of the orbit, and null at the mean distances. ❋ T. Bassnett (N/A)

Horrox as depending upon the libratory motion of the apsides, and the change which takes place in the eccentricity of the lunar orbit. ❋ Thomas Nathaniel Orchard (N/A)

Any persons whom it could please have no better notion of what the words referred to signify than of the meaning of _apsides_ and ❋ Various (N/A)

And, we might also ask, why the tangential resistance to the comet of Encke should not also produce a retrograde motion in the apsides of the orbit, instead of diminishing its period? ❋ T. Bassnett (N/A)

This proportion of the decrement of the forces is confirmed from the eccentricity of the planets, and the very slow motion of their apsides; for in no other proportion, it has been established, could the circum-solar planets once in every revolution descend to their least, and once ascend to their greatest distance from the sun, and the places of those distances remain immovable. ❋ Various (1909)

A small error from the duplicate proportion would produce a motion of the apsides considerable in every revolution, but in many enormous. ❋ Various (1909)

This alteration, every hundred years, of the line of the apsides, makes a sixth complication in the movements of our planet. ❋ Unknown (1890)

That is to say, he assumed a revolving line of apsides in an elliptical orbit traversed by a pretty strongly compressed pair of globes. ❋ Unknown (1874)

Thirdly, the variations in the eccentricity of the earth's orbit, combined with the precession of the equinoxes and the rotation of the apsides, may be regarded as operative. ❋ Nathaniel Southgate Shaler (1873)

It is easy to see that the effect of this action, which is called the revolution of the apsides, or, as the word means, the movement of the poles of the ellipse, is to bring the earth, when a given hemisphere is turned toward the sun, sometimes in the part of the orbit which is nearest the source of light and heat, and sometimes farther away. ❋ Nathaniel Southgate Shaler (1873)

APSIS, plural _apsides_, the line joining the aphelion and perihelion points; or the major axis of elliptical orbits. ❋ Henry White Warren (1871)

Any persons whom it could please could have no better notion of what the words referred to signify than of the meaning of apsides and asymptotes. ❋ Oliver Wendell Holmes (1851)

To-day I became strongly impressed with the idea, that the balloon was now actually running up the line of apsides to the point of perigee — in other words, holding the direct course which would bring it immediately to the moon in that part of its orbit the nearest to the earth. ❋ Unknown (1840)

From the north and south faces of both rooms are semi-circular apsides, projecting 6 feet 6 inches, containing the ❋ Edward Everett (1829)

To-day I became strongly impressed with the idea, that the balloon was now actually running up the line of apsides to the point of perigee -- in other words, holding the direct course which would bring it immediately to the moon in that part of its orbit the nearest to the earth. ❋ Edgar Allan Poe (1829)