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3D Houses: The most accurate method of house placement?
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Joined: 27 Sep 2017
Posts: 16
Location: Seattle, WA

Posted: Tue Nov 14, 2017 4:17 am    Post subject: Re: Thanks Reply with quote

astralwanderer wrote:
Mark's point about the 'collapse' of Campanus houses at even quite modest latitudes is also a concern for me. However, the following data shows that the difficulties might not quite be quite as challenging as they first seem. Statistically, Porpyry and Campanus offer the same degree of significance (or greater) than Placidus/Gauquelin divisions of the sphere.
This is interesting research data! Thumbs up I know that Gauquelin Sectors are computed using a technique similar to Placidus cusps, and in fact can be approximated with them (see Astrolog's "-l0" command switch). It looks like similar techniques can be done with other house systems too.

EdF wrote:
As an aside, I consider these representations as "2D" - two astronomical coordinates are represented. Conventional charts are 1D - only the "longitudinal" coordinate is represented.
You're right, at least when considering a single planet. However, I use the name "3D houses" because it's considering the set of planets in a chart as a whole. A standard chart has all planets placed on the 2D plane of the ecliptic, and ignores their 3D latitudes rising up out of that plane. A 3D chart sphere works with the full 3D model of the planets in space with their different latitudes.
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