So, how do these aspects affect planetary dignities/debilities and vice versa?

 

Let's Start with the Sun...the planet of the ego. If the sun was positioned in a sign that is detrimenting in (Aquarius), then this reflects an Ego that has no firm identity thus is unpredictable and hardly ever feeling unique enough. With a positive aspect (a conjunct, trine, or sextile) to a planet, the native may not necessarily be able to rid themselves of the uncomfortability of this position, however they may be able to find channels for their energies. They would find it a little easier than most with this debilitating position to find themselves, as they may develop more appropriate ways to express themselves. Depending on the planet (moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, N/S Node), that will determine where these natives would gain more energy or benefits to help them channel their energies appropriately. For example, if the sun is positively aspecting Venus, then their own charms will refine the qualities of the damaged ego, allowing them to channel their confidence in charming ways. This can obviously work in the favor of the native.

If the sun were to have negative planetary aspects (an opposition, square, or inconjunct) to the detrimenting planet, then the obstacles will feel more stressful than normal. A planet aspecting a detrimenting planet may feel more neglected for the sake of providing energy for the detrimenting planet. However, with the detrimenting planets aspecting a non-debilitated planet, negative or positive aspects can be useful to it. Remember, a detrimenting planet is in such a "dire situation" that any outside "help" can lead to understanding and insight. Depending on the planet (moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, N/S Node) this will determine which areas of life will be affected by this damaging energy on the one hand, and on the other hand, it will also show which energies are giving more energy to the damaged energy.  If the detrimenting sun was poorly aspecting the moon, for example, the emotions would be giving the ego a little more energy, despite how conflicting the aspect is.  However, the ego, which is in a damaging state, will be responsible for the hindrence of emotional insecurity, causing the native to feel more emotionally insecure and causing the native to set aside their emotional life for the sake of their ego. (This is especially so if the moon were to also be debilitated in Scorpio).

 

With a falling position, the native usually has natural qualities from the sign that does not seem to match that of the planet. Let's use the example of Venus. When Venus is in Virgo, Venus is in a falling position. Natives with this position seem to behave differently than what we normally expect, and in this case natives with Venus in Virgo do not express love as openly, making opportunities seem hard to come by. However, if there are good aspects to the falling Venus, then there is a higher chance that the native can make their repressive love expression more attractive.  Depending on the planet that is aspecting Venus (moon, Mercury, Venus, Mars, etc) will determine which planetary energies will help them gain more benefits. For example, a native that has a falling position aspecting Mars positively will find that being assertive/active makes them more attractive, especially if the Mars is in a dignified position in Capricorn or Scorpio.

If the falling position of Venus is negatively aspecting another planet, then the native will struggle a little more than usual to feel attractive or desirable to others. The repressive way they express will be enheightened,  thus making the natives with this position feel uncomfortable around others. Depending on the planet, that will reflect what area of life may be holding them back from expressing more openly and naturally. The native may feel that their attempts are met with failures rather than successes. For example, if Saturn is negatively aspecting Venus, then there are many boundaries and limitations interfering with the native, especially if Saturn is in a sign like Aries or Leo (the signs of Saturn's debilitation). For this native they may have to work much harder to overcome obstacles and they may feel as if they are on a never-ending search to find channels for their energies. With hard work anything can be overcome.

 

When it comes to exaltations, a planet in the sign of its exaltation reflects natives that have natural qualities of the planet, therefore gaining opportunities are much easier. However, if there are negative aspects to this kind of planet, the natives will use these energies for more negative ends than positive ones. They may take for granted the opportunities that come, causing the native to lose everything they have gained. For example, a native with Jupiter in Cancer negatively aspecting Uranus may be careless when it comes to benefits. They may be generous in the hopes of promoting ideas or join unorthodoxed religions simply to be rebellious. They may give to others in the hopes of gaining personal profit from it as well. They may gain luck from the family and family traditions, only to rebel against the family and family traditions. (This is especially the case if Uranus is in Leo). 

On the other hand, if there are positive aspects to a planet in exaltation, the native will not take for granted their benefits and will have many talents to help them maintain opportunities. For example, a native with Saturn in Libra aspecting Neptune positively will understand their limitations to both rigidity and vulnerability. This will help them gain more benefits.

 

Then, there are domiciles. Domiciles are dignities usually, but when negatively aspecting another planet it can cause the native to express themselves more negatively than positvely. As a result, they may lose the benefits they had the potential to gain. For example, if Mars was in its domicile Aries and squaring Pluto, then the native will be more intense and extreme than normal. They may be impulsive and violent in some cases as well.

However, if there are positive aspects to a planet like Mars in domicile in Aries, the native will have more power to help motivate them and they will be able to express their energies in most positive ways. For example, if Mars were to be aspecting the moon positively, the native will be more creative than temperamental. They will be alluring and seductive, connecting the emotions with sexual intimacy. They will have stronger channels for their emotions that can be worked out in physical exercise or sports.

 

Each planet has its own representation in astrology

Sun--planet of ego 

Moon--planet of emotions

Mercury--planet of the mind and communication

Venus--planet of love and beauty

Mars--planet of energy and sexuality

Jupiter--planet of chance and luck

Saturn--planet of boundaries and order

Uranus--planet of revolution and innovation

Neptune--planet of imagination and vulnerability

Pluto--power and transformation

Lunar Nodes--Karmic Destiny and life lessons

 

 

Note: While many astrologers do not use signs or dignities/debilities in a Synastry chart (compatibility chart), the signs and dignities/debilities can give more incite into the nature of an aspect in a compatibility chart.