General astronomy

General astronomy

Branche: Astronomie

Neuen Begriff hinzufügen

Contributors in Allgemeine Astronomie

Become a Contributors

General astronomy

Ephemeridenzeit

Astronomie; Allgemeine Astronomie

Determined in principle from the sun's apparent annual motion, ET is the numerical measure of uniform time, which is the independent variable in the gravitational theory of the earth's orbital ...

Ephemeride

Astronomie; Allgemeine Astronomie

A table listing specific data of a moving object, as a function of time. Ephemerides usually contain right ascension ("R. A. " in these web pages) and declination ("Decl. " in these web pages), ...

Angular distance of a celestial object from the sun in the sky. In standard ephemerides, this is usually denoted by the Greek letter epsilon (or by the abbreviation "Elong. "). A celestial (usually ...

Deklination

Astronomie; Allgemeine Astronomie

One element of the astronomical coordinate system on the sky that is used by astronomers. Declination, which can be thought of as latitude on the earth projected onto the sky, is usually denoted by ...

Ekliptik

Astronomie; Allgemeine Astronomie

Der scheinbare Lauf der Sonne vor dem Himmel Hintergrund (Himmelskugel); formal die mittlere Ebene der Erdbahn um die Sonne.

Komet

Astronomie; Allgemeine Astronomie

A celestial body orbiting the sun (though some may be ejected from the solar system by planetary perturbations) that displays (at least during a portion of its orbit) some diffuseness and/or a "tail" ...

baryzentrische dynamische Zeit

Astronomie; Allgemeine Astronomie

Unterscheiden Sie sich nur durch periodische Veränderungen von TDT, TDB dient in Ephemeriden und Bewegungsgleichungen, die auf das Baryzentrum des Sonnensystems verweisen.