The tides which happen, when the moon is in perigee, are considerably greater than when she is in apogee; and if she happens to be in perigee at the time of the syzygies, the spring tides are unusually high.
Perigee was south of Singapore on the last two passes, but so low I doubt if they got any clear sightings.
She will unfortunately suffer a progressive perigee drop on each resolution and after three hundred forty eight years, seven months and approximately nineteen or twenty days she will re-enter the atmosphere and burn up.
We have a perigee of six hundred twenty five miles and an apogee of twenty nine hundred miles, and .
Anomalistic revolution, or time taken in passing from perigee to perigee - 27 d.
It descends from apogee to perigee and in just as many others it returns from perigee to apogee, to be carried down thus to true, back and front from the longitude and distance from the sun and from the middle of the earth.
The orbits of these lateral vortices depend, like that of the central vortex, on the orbit of the moon for eccentricity, but the longitudes of the perigee will not correspond with the longitude of the moon's perigee.
On the longitude of the perigee of the lunar orbit at the time.
Another period which must influence the character of different years, depends on the conjunction of the perigee of the lunar orbit with the node.
He found the average amount of rain at the perigee about equal to the amount at the apogee, as much at the full as at the change, and no difference at the quadratures.
In passing from the perigee to the apogee the axis will pass over the latitudes intermediate between R and R′ in both hemispheres, neither reaching to the equator E, nor to the pole P.
But although the moon passes her perigee every month, she does not reach the zenith always at exactly the same moment.
It will be necessary, therefore, to wait for the moment when her passage in perigee shall coincide with that in the zenith.
The perigee distance, therefore, is that which ought to serve as the basis of all calculations.
Acceleration of the planets, the increasing velocity of their motion, in proceeding from the apogee to the perigee of their orbits.
One of the two points of an orbit, as of a planet or satellite, which are at the greatest and least distance from the central body, corresponding to the aphelion and perihelion of a planet, or to the apogee and perigee of the moon.
But although the moon passes herperigee every month, she does not reach the zenith always at exactly the same moment.
The lunar tide varies between apogee and perigee from 4·3 to 5·9.
But it moves more rapidly when near perigee than when near apogee, so that its motion differs considerably from perfect uniformity.
The "anomalistic month" is the time occupied by the moon in travelling from its perigee, that is its point of nearest approach to the earth, round to its perigee again.
This was directly after the time when, sliding down the long hill to the perigee of his orbit, he turned on his radio and cried for help.
He kept calling mechanically even after perigee was long past, praying for an answer from the powerful transmitters below or from a searching ship.
At theperigee the velocity of translation is greater, and the moon shows a certain portion of her western border.
It was clearly understood that when at her apogee the moon was farthest from the earth, and when at her perigee she was nearest to our planet.
This coincidence of perigee and zenith must be waited for.
The perigee distance is, therefore, the one that should give us the basis of all calculations.
