21. Seasons of the Year
... At equinox, the situation is as in the first drawing, and night and day are equal (that's where the word "equinox" comes from) . ...
22. TUI:Telescope:Coordinate Systems
... ICRS is FK5 J2000 (for all practical purposes) but has no date of equinox . ... The date specifies both the date of equinox (usually J2000) and the date of ... The date specifies both the date of equinox and date of observation . ...
23. (Untitled)
... apparent . Main plane — EQUATOR . Center . equinox . 1950 2000 true . equinox . 1950 2000 true . ...
24. Les saisons pendant l'ann e
... 3) Les saisons pendant l'ann e . Equinoxe et Solstice . Et et hiver . Quelques faits int ressants. ... tout au long de l'ann e. Deux fois par an, aux equinoxes de Printemps et d' Automne , (autour du 21 mars et du 23 septembre ...
25. Explanation of the table of ecliptical coordinates of the Sun.
... digits is given, add head of column to form correct number), longitude in system of mean equinox of date (degrees, minutes, seconds), two latitudes (the first for mean equinox of date and the second for mean epoch of year; seconds), radius-vector (astron ...
26. Stellarium: TelescopeClientDirectLx200 Class Reference
... const QString &name, const QString ¶meters, Equinox eq=EquinoxJ2000 ... observer-centered equatorial coordinate at the current equinox The frame has it's Z ... Get observer-centered galactic coordinates at equinox J2000. More... љ . Vec3d љ . ...
27. My photo gallery
... 1. Equinox-94 . Welcome! . 2.Equinox-94 . Sad song . ... 1. Equinox-94 . Welcome! . 2.Equinox-94 . Sad song . Our wonderful group . ... Sad song . Our wonderful group . 3.Equinox-94 . Prizes, prizes!!! . 5. Greece-95. ...
29. ravnodenstviee
... Equinox - a moment of the Sun's centre passing through the celestial equator in its visible moving along the celestial sphere. ... The equinox occurs on the 20-21 of March (vernal) and on the 23d of September (autumnal). ...