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Parallel and calculated points

 
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laraS



Joined: 29 Aug 2012
Posts: 7

Posted: Sun Mar 22, 2015 7:34 pm    Post subject: Parallel and calculated points Reply with quote

Hi all,

I see that Solar Fire (I have v.eight) does calculate parallel aspects between any planet and the ASC and MC.
I do not understand how the ASC and MC can have a declination. What am I failing to understand?
Thank for clearing up some great fog here...
Lara S
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jventura



Joined: 04 Jan 2011
Posts: 293
Location: Portugal

Posted: Sun Mar 22, 2015 8:40 pm    Post subject: Reply with quote

Hello,

Maybe it uses equatorial declination (as in right ascension and declination)!


João Ventura
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Cédric



Joined: 11 Dec 2014
Posts: 13

Posted: Mon Mar 23, 2015 4:58 pm    Post subject: Reply with quote

I think you jumble up between Ecliptical coordinates (longitude and latitude) and Equatorial coordinates (declination and right ascension).
We have two circles that intersect at the Equinox points. Declination is an arc measured from a point on the circle of the Equator to the circle of the Ecliptic (when we look for a point on the Ecliptic – the case is different with planets other than the sun, because they have latitude).
So, the ascendant and midheaven, being points on the Ecliptic, as soon as they are not at 0° Aries or 0° Libra, where the two circles intersect, they have a declination value different than 0 degree.

Points on the Ecliptic, when hitting 0° Aries (0° longitude, 0° RA) have a declination of 0 degrees. These degrees increase to +/- 23°26' at 0° Cancer (90° longitude and RA), where the value for the obliquity of the Earth shows itself, then the degrees decrease to 0 at 0°Libra (180° longitude and RA) to reach +/- -23°26' at 0° Capricorn (270° longitude and RA) and finally equalize again at 0° Aries (360° = 0°).
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laraS



Joined: 29 Aug 2012
Posts: 7

Posted: Tue Mar 24, 2015 8:55 am    Post subject: Reply with quote

Thank you Cedric for your clear explanation.
Now I finally understand it.
With much appreciation,
Lara
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