JUPITERASC
Well-known member
The Thema Mundi was not based on observation
but on an idealized scheme of the heavens.
Empirically Venus is never more than 48 degrees from the sun
but in this stylized chart it is 60 degrees away.
Even so, the odds of getting all of the planets in perfect 30-degree arcs from their neighbours at 15 degrees of their signs
and all in those house positions, is about nil.
https://en.wikipedia.org/wiki/Thema_Mundi
I'm no expert

I recall reading amongst Hellenistic material
that the Thema Mundi was indeed a kind of a mythical horoscope
that was used in Hellenistic astrology
and it apparently shows the supposed positions of the seven visible planets (including the Sun and Moon)
at the beginning of the universe
tsmall mentioned elsewhere as well that
if you look at the Thema chart, take the 4th house.
Libra, ruled by Venus (one of the traditional significations of the mother), the exaltation of Saturn.
If we play with the ideas a bit, Libra is the natural 4th house.
Saturn (the father) has a natural affinity with the 4th
(well, that makes a ton of sense, now doesn't it?)
and is exalted by Venus in the house that signifies "home/roots."
This also gives us Saturn's affiliation with death
as the 4th represents death among other things
Thema Mundi is mythically considered the chart of the world
and literally was historically used as a teaching tool for astrologers.
In it you can find the reasons for the domicile rulers, the exaltations, the planetary joys
the nature of the aspects, sect
...on and on it goes.
This pdf is a good starting point for understanding
http://www.azastrologers.org/Article...ThemaMundi.pdf
Douglas Noblehorse article extract focusing on Mars states http://www.azastrologers.org/Article...ThemaMundi.htm
QUOTE:
“The Thema Mundi is a Hellenistic Era Natural Wheel
that illustrates fundamental astrological principles.
In addition, it reveals the inner geometrical elegance
that gives these fundamentals their meaning and definition"
For instance
Mars is associated with Aries and Scorpio
and to a lesser extent
with Capricorn.
Douglas Noblehorse provided useful summary of important considerations
related to basic Mars delineation of natal
(as well as other, such as mundane) astrological charts
