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Natal Chart Calculation Options
The standard data input menu for natal charts includes the following "advanced
option" calculation choices:
- True/Mean Node:
- A node is a point where the orbital plane of a planet intersects the orbital plane of
another planet. Charts are generally calcualated using the derived "mean" node;
in recent decades, likely due to the advent of the computer, have increased many
astrologers interest in using True Node calculations. Win*Star offers this calculation
option with all charts.
- Geocentric Latitude:
- A correction applied to chart calculation that takes into effect the spheroid shape of
the Earth. This calculation affects the ascendant position by a few minutes of arc;
thought to be important in solar arc predictions.
- Parallax Moon:
- A correction for the difference in the position of the Moon as measured from two points
on Earth from the center of the Earth (standard calculation) and from the actual altitide
of a particular location on Earth.
- Part of Fortune (day/night):
- The best known of the "Arabian Parts;" calculated from the celestial
longitudes of the Sun, Moon and the Ascendant. Regarded as extremely benefic, the
placement of the Part-of-Fortune is often associated with inherited wealth and general
good fortune.
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