Descending node

Descending node lunar eclipse paths A penumbral eclipse occurs when the Moon only passes through the Earth's penumbra, the outer portion of the Earth's shadow.

descending node -- the point in the orbit of the Moon where it passes from above the ecliptic plane to below (see node). draconic month -- the time it takes for the Moon to return to a node (about 27.2 days).

Descending node -- The point at which an orbit crosses the ecliptic plane going south. DKF -- DSN keyword file, also known as KWF. Doppler effect -- The effect on frequency imposed by relative motion between transmitter and receiver. See Chapter 6.

Descending Node - The point in the Moon's orbit where it crosses the ecliptic from north to south Detector - A device used to measure light once it has been brought into focus by a telescope ...

Descending Node The point in the orbit of a solar-system body where the body crosses the ecliptic from north to south. Desorption ...

descending node That point at which a planet, planetoid, or comet crosses to the south side of the ecliptic; that point at which a satellite crosses to the south side of the equatorial plane of its primary. Also called southbound node.

southbound node (NASA SP-7, 1965) = descending node. Southern sky (NASA Thesaurus) That portion of the celestial sphere between the celestial equator and the celestial south pole (and generally visible from areas in the Earth's southern hemisphere).

Saros series are numbered according to the type of eclipse (solar or lunar) and whether they occur at the Moon's ascending or descending node.

nodes in the moon's orbit around the earth; the point where the moon in its orbit crosses from south of the ecliptic plane to north of it is called the ascending node, and the point where it crosses from north to south is called the descending node.

If the Moon is traveling from south to north, it's called an ascending node; and if the Moon's traveling from north to south, it's called a descending node.

The Moon crosses from south to north of the ecliptic at its ascending node, and vice versa at its descending node.

Nodes. The points at which the orbit of the Moon, a planet or a comet intersect with the plane of the ecliptic; south to north (Ascending Node), north to south (Descending Node).

The object distance range of an optical system (e.g. a camera) that gives acceptably sharp images. The smaller the aperture, the greater the depth of field. (also Depth of Focus) [DC99] Descending Node ...

a reference plane, such as the plane of the ecliptic (in the case of a Solar System object) or the celestial equator. The opposite point in the orbit, where the body moves from north to south across the reference plane, is the descending node.

Pluto's ascending node, the point at which the orbit crosses the ecliptic, is currently separated from Neptune's by over 21°; their descending nodes are separated by a similar angular distance (see diagram).

See also: Earth, Ecliptic, Solar, Sun, Orbit