Q: Do the nodes [Rahu and Ketu] have dignity? If so, how do we calculate it. If not, how to we assess their positivity or negativity.
We still have to consider the positivity and negativity of Rahu and Ketu, but we don’t calculate it in the same way as with other planets because Rahu and Ketu just are not the same as the other planets.
One difference in particular is that they don’t own signs. For centuries people have researched and hypothesized about what signs they might somehow “own.” They come to interesting conclusions that the 3rd and 6th signs (Gemini and Virgo) are good for Rahu, and that the 9th and 12th signs (Sagittarius and Pisces) are good for Ketu. And that the 8th sign (scorpio) is like exaltation for Ketu, and the 2nd (Taurus) like exaltation for Rahu. There is something to be said, of course, for all these centuries of research, but I have found these observations to be more true regarding houses. In other words, Rahu and Ketu do really well when Rahu is in the 3rd or 6th (placing Ketu in the 9th or 12th), and visa versa, there is some inherent difficulty with Rahu in 9 or 12 (placing Ketu in 3 or 6), and also that there is also something very special about Ketu in the 8th house.
I personally prefer not to try to give sign-based dignity to Rahu and Ketu. Here is an article regarding how to calculate their positivity and negativity: Dignity for Rahu and Ketu
Q: How would we calculate prominence for Rahu and Ketu?
Here there is less difference than with dignity. So prominence is a similar calculation as for the other planets. The only problem is that we can’t get a traditional ṣaḍ-bāla score for Rahu Ketu. One way around this is to just ascribe them a neutral ṣaḍ-bāla. Another possible approach is to give them the bāla of their dispositor and aspectors, as explained in the article referenced above.
Q: Do Rahu and Ketu give aspects?
Over the centuries there has been debate about this question. My opinion is that they do not give aspects, but are very sensitive to the aspects they receive.
Q: Does the condition of the Sun and Moon in a chart have an imapct on the way in which the nodes behave, since they are the eclipse points of the Sun and Moon?
This question is very intelligent, and should be taken up as a subject of research.
Vic DiCara – www.vicdicara.com