Pillar article
Sun Conjunct Rahu, a Grahan Yoga
The Sun and Rahu in one sign form Grahan yoga. The Sun is the karaka of authority, vitality in the classical sense, and the father. Rahu eclipses that karaka in the house they share. The lord of the sign remains the dispositor of both.

Eclipse language, kept literal
An astronomical eclipse needs proximity and the right node alignment in the sky. A natal Grahan yoga is the chart's echo of that figure: the Sun sharing a sign with Rahu. It does not mean the person was born during a visible eclipse, and this page will not invent an eclipse date. The effects traditional authors attach are a complicated relation with the father and with bosses, a strong will that meets obstruction, and a public life that can rise through unusual channels. The house localizes it. Grahan in the 10th is career and reputation. Grahan in the 9th pulls in the father as house and as karaka together. Grahan in the 1st pulls it into the body and the personality.
Combustion is a different contact
Grahas too close to the Sun are combust. Rahu is the node that forms the eclipse yoga rather than a planet that simply burns up. Do not fold Rahu into the combustion orbs used for Mars or Mercury. Those orbs are already disputed, and none is stated here. What you can say is that the Sun's sign lord disposits Rahu. The Sun in Simha disposits itself, so Rahu in Simha must live in the Sun's own sign, a proud and exposed version. The Sun in Tula is debilitated, and Rahu there amplifies a fallen Sun. Venus, ruler of Tula, is the rescue route if Venus is strong, because Venus is the dispositor.
Pitra, career, and the dasha
Call it a pitra reading when the 9th is involved. Call it a career reading when the 10th is involved. Rahu mahadasha of 18 years or the Sun's mahadasha of 6 years wakes the yoga. Sun-Rahu antardasha inside the Sun's 6 years is 6 times 18 divided by 120, which is 0.9 years, or 10 months and 24 days. That is the sharp slice. Sunday is the Sun's vara if a person wants a discipline aimed at the karaka. The discipline does not separate the conjunction. Father and authority remain the topics to watch, not a medical claim about the heart and not a prediction of disgrace.
Frequently asked questions
Is every Sun-Rahu pair an eclipse birth?
No. The yoga is a shared sign in the natal chart. A visible eclipse on the birthday is a separate astronomical event and is not assumed here.
Does Grahan yoga ruin the father?
It complicates the Sun, who is the father karaka, most clearly when the 9th house is also involved. The father's own chart is his. Your Sun describes your experience of authority and of that karaka.
Which period activates it?
Rahu's 18 years, the Sun's 6 years, and especially the Sun-Rahu antardasha of 10 months and 24 days inside the Sun mahadasha. Other years the yoga stays natal.
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D1, D9, D10, dashas, yogas, and transits, the same calculations referenced in this article.
