Frequently Asked Questions (FAQ)
Astrodienst round > Partner horoscopes
- What kinds of chart drawings can
be used for partnerships and relationships?
Beside horoscopes that are calculated for the birth of individual people, it is also possible to calculate charts for relationships. There are several astrological techniques which do exactly that. A commonly used method is to erect a chart for the point of time when two partners met for the first time or started a relationship. Other popular methods are based on the birth data of the respective persons. These are called synastry chart, composite chart and Davison Relationship Chart.
- How does synastry
work?
Synastry is a comparison of two birth charts. Both charts are - metaphorically speaking - "laid on top of each other." The planets of both partners are drawn into one chart diagram, one inside and the other one outside the circle. It can turn out that the planets of both partners interact by making aspects with each other. The synastry shows how the two partners interact or how they match.
If you want to learn more about interpreting a synastry chart, you can find more information and a sample chart in the AstroWiki
- Which orbs are used for Synastry aspects?
For drawing the aspects in a synastry chart, we use half the orb of the natal chart. The reason is that there are twice as many planets in the synastry chart. The aspect picture would become rather confusing with twice as many aspects.
In the additional data tables (PDF) there is also an aspect grid for the synastry aspects. There the orb is the normal orb, but those aspects in the grid which are above half of the maximum orb are marked with a ', indicating that they are not drawn.
- What is a composite
chart?
You will find your answer to this and other questions concerning composite charts here.
- What is a Davison Relationship
Chart?
A Davison Relationship Chart is a chart that is calculated for the "middle" in time and space between both natal charts. This means that the exact midpoint of the two birth times is found, as well as the exact midpoint between the two birth places. This is the basic concept. However, some astrologers have developed different techniques when it comes to detail.
For more information on the interpretation of a Davison Relationship Chart, please consult the AstroWiki
- What is the meaning of the
different variants of Davison Relationship Chart?
These are the Davison Relationship Charts offered on the "Extended Chart Selection" page:
a) Davison Relationship Chart - uncorrected
b) Davison Relationship Chart - corrected
c) Davison Relationship Chart - spherical midpoint
d) Davison Relationship Chart - reference place
The difference between the uncorrected and the corrected Davison Relationship Chart, i.e. between variants a) and b), is that a) strictly uses the exact midpoint between the two birth times. With b), on the other hand, the time of the Davison Relationship Chart is "corrected" in a way that brings the resulting MC into exact conjunction with the MC of the composite chart of both partners. The time of the Davison Relationship Chart in this case does not correspond with the point of time that is exactly in the middle between the two births.
The "Davison Relationship Chart - spherical midpoint" c) is a variant of the uncorrected Davison Relationship Chart a). The difference is in the calculation of the "middle" place. In a), the midpoints of the geographical latitudes and longitudes are calculated separately. I.e. Latitude (Davison Relationship Chart) = (latitude chart 1 + latitude chart 2) / 2, and Longitude (DRC) = (longitude chart 1 + longitude chart 2) / 2.
However, this calculation method does not really result in the midpoint between the two births. In order to find this, we need to find the shortest distance between the two birth places and determine the middle of this line. (Technically speaking, the shortest way always leads along the great circles.)
E.g. the shortest way between Germany and Hawaii does not lead westward but via the arctic region. And if you want to fly from Hamburg to San Fransisco, you need to fly via Greenland, even though Greenland is further north than both Hamburg and San Fransisco. It is best to visualise this concept with the help of a globe. The "Davison Relationship Chart - spherical midpoint" uses this method to calculate the "middle place" of the chart. This appears to be more logical and more correct.
Of course, if the place of a Davison Relationship Chart is calculated with the above methods, it usually does not "hit" an inhabited place like a city or town but can also lie in the middle of an ocean.
Finally, the "Davison Relationship Chart - reference place" d) is calculated for the midpoint of the two birth times but not for the middle place between the two births. Instead, a selected reference place is taken into account, e.g. the place where both partners live or work.
- Can I save a Davison
Relationship Chart in "My Astro"?
Yes, this is possible. View the Davison Relationship Chart in the Extended Chart Selection and then click on the link Save these data to My Astro above the chart drawing.
- How can I compare the charts of
twins?
The only approach to a relationship horoscope known to us that works for twins is the one by Mona Riegger. It is also used in the "Horoscope for Two" that can be ordered in the AstroShop.
Mona's approach differentiates between "the older" and "the younger", which is always known with twins, even if they were cesarian births. She inverses some elements of the Davison Relationship Chart for the younger one and thus receives two distinctly different horoscopes. This is the basis for some very interesting information about the relationship between the twins. It is not by accident that Mona herself is a mother of twins.