Kuja (Mars) Sadharana Gandhara, Chatusruti Daivata
Budha (Mercury) Suddha Rishabha, Kakali Nishada
Guru (Jupiter) Antara Gandhara, Suddha Daivata
Sukra (Venus) Chatusruti Rishabha, Kaisika Nishada
Sani (Saturn) Suddha Madhyama and Prati Madhyama
This grouping satisfies several criteria of Samvaditva, Anuvaditva and Vivaditva, though a few criteria are not conformed to. Research is in progress.
The next step, axiomatic corollary, will be the astrological portrayal of Ragas. The jeeva swara represents the eighth house, the raga-chhaya swaras, the 5th and the 9th houses, the nyasa swara, 11th or 12th house. The graha swara is the indicator of the laghna. Each raga can be cast as a horoscope.
Dikshitar's kritis have references to several astrological details like Swakshetra, Uccha, Mitratva, Shatrutva and so on. The composition in raga Paras, Srisukra, makes copious references to astrological calculations of Amsas and their results
If the faithful and cognoscenti prescribe rendition of the kritis on the planets as a palliative, it evidently, is a substitute for Vedic or mantric recitation. Many have vouched for the efficacy of rendition of the kriti "Divakara Tanujam" in Yadukulakambhoji.
The extent of cognizance of the inter-relation of astrology and music, currently, is limited. It is a matter of gratification that there is some on-going research on this subject, albeit to a limited extent. Perhaps, generations to come will know much more than what has been revealed to us.
The 9 Planets (Grahas)
Jyotish or Vedic Astrology uses 9 Grahas (planets) in the chart analysis :
The Sun represents the soul, the ego and the body of the individual, and therefore its placement is of great importance. The Sun is best placed in Mesha (Aries) where it is called exalted. Opposite from there, in Tula (Libra) it is least auspicious and called debilitated. The sun is lord of the sign Simha (Leo) and also of the house where Simha is located.
The Moon represents the mind, the feelings and, like the ascendant, the overall life of the person. Unlike Western Astrology where the Sun is most important, in Jyotish the Moon is the first graha to look at and plays a central role in many calculations and predictive techniques. The Moon is best placed in the first few degrees of Vrishabha (Taurus) where it is called exalted. Opposite from there, in Vrishika (Scorpio) it is least auspicious and called debilitated. The Moon is lord of the sign Karka (Cancer) and also of the house where Cancer is located.
Mars represents the energy, stamina and younger brothers of the individual. If well placed, it brings strength and focussed energy, if poorly placed accidents and injuries. Mars is best placed in Makara (Capricorn) where it is called exalted. Opposite from there, in Karka (Cancer) it is least auspicious and called debilitated. Mars is lord of the sign Mesha (Aries) and Vrischika (Scorpio) and also of the houses where these signs are located.
Mercury represents the speech, intellect and friends of the individual. It is a very, adaptable and curious planet. If afflicted, it gives speech problems and a poor discriminative ability. If well placed it makes a person witty, easy going and skillful. Mercury id best placed in Kanya (Virgo) where is called exalted. Opposite from there, in Meena (Pisces) it is least auspicious and called debilitated. Mercury is lord of the sign Kanya (Virgo) and Mithuna (Gemini) and also of the houses where these signs are placed.
Jupiter represents knowledge, wisdom and the offspring of the individual. It is a planet of expansion, growth and good fortune. Jupiter is best placed in Karka (Cancer) where is called exalted. Opposite from there, in Makara (Capricorn) it is least auspicious and called debilitated. Jupiter is lord of the signs Dhanus (Saggitarius) and Meena(Pisces) and also of the house where these sign are located. Jupiter aspects 3 signs, the 5th, 7th and 9th signs from its own position.
Venus represents the enjoyment, taste, sexuality and relationships of the individual. It can give a person a great sense of estetics and very pleasant personality, or sensual and tasteless, dependant on how well it is placed in the chart. Venus is best placed in Meena (Pisces) where is called exalted. Opposite from there, in Kanya (Virgo) it is least auspicious and called debilitated. Venus is lord of the sign Vrishabha (Taurus) and also of Tula(Libra) and of the houses where these signs are located.
Saturn is the slowest moving graha, and represents the more time related aspects in life: endurance, sense responsibility, hard work, longevity and reclusion. It is typically described as the bringer of grief and misery in life, but if it is auspiciously placed in a chart it will be one's best insurance against poverty. Saturn is best placed in Tula (Libra) where is called exalted. Opposite from there, in Mesha (Aries) it is least auspicious and called debilitated. Saturn is lord of the sign Makara(Capricorn) and Kumbha(Aquarius) also of the houses where these signs are located.
Northern Lunar Node (Rahu)
Rahu is the point in the zodiac where the paths of the Sun and the Moon cross. If the Sun and Moon in their movement meet in this point, then an eclipse takes place. Eclipses "seize" the light of the Sun or the Moon, and it is this seizing quality that is characteristic for Rahu.
Southern Lunar Node(Ketu)
Ketu is not really a planet, but rather a mathematically calculated point in the heavens. Because of its lack of a "body" it represents uncertain, unexpected and unpredictable phenomena. It is intelligent and relates to mathematics and other abstract knowledge.
Rahu, Ketu, and the Planets influence each other in various ways. The ancient sages saw a relationship between the movement of the planets and the ups and downs of human experience. Vedic Astrology (Parashara's Light Software) explores these variations in order to help us anticipate challenges and comprehend their meaning.
Two planets in the same sign are conjunct. Planets in sign opposition are said to aspect each other. Mars, Jupiter and Saturn have special additional aspects. The sign in which a planet is located is of great importance. If the sign is favorable to the planet, the qualities of the planet are expressed more strongly and auspiciously. The person in question will enjoy more benefits in the area of life that is signified by the planets. Contrary, if the sign is very unfavourable, the planet will turn inauspicious and bring problems and struggle in whatever area of life it represents.