The Astrology of Space - Matrix Software

The Astrology of Space
Right Ascension (R.A.) – The angle between an
hour circle passing through an object and the
meridian plane, in the case of equatorial coordinates,
zero degrees of Aries. R.A. is measured eastward on
the celestial equator from what is called the True
Equinox to the body in question. R.A. is expressed in
either degrees (0° to 360°) or in Hours-Minutes-
Seconds (0h to 24h).
Declination – The angular distance of any object
measured north or south of the plane of the celestial
equator, from 0° to 90°.
Declination Circle – Parallel circles of declination
either north or south of the plane of the celestial
equator.
Parallel of Declination -- Parallel circles of
declination either north or south of the plane of the
celestial equator.
Equatorial Plane – The infinite extension of the
equator of the Earth in all directions.
Meridian – A great circle on the celestial sphere
through the celestial poles, the zenith of any place or
locale, and the north and south points on the horizon.
Prime Meridian – The point of zero longitude
measurement for any celestial body. In the case of
the Earth, the prime meridian is considered to be
Greenwich, England.
Transit – The passage of a celestial object across a
particular meridian.
346