How to Calculate Your Atmakaraka

What you need

A list of your planetary positions in sidereal longitude, showing each planet's sign and its degree within that sign. Any birth chart that prints degrees will do. You do not need the ascendant for this step, and you do not need the divisional charts.

The five steps

One. Write down the seven planets: Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn. Leave out Rahu and Ketu. Leave out the ascendant, which is not a planet and cannot hold this office.

Two. For each one, write only the degree within its sign, the figure between 0 and 30. Discard the sign name entirely. This is the step people skip, and skipping it is why they get the wrong answer.

Three. Ignore dignity completely. Exaltation, debilitation, own sign, combustion and retrogression have no bearing here. A debilitated planet at 29 degrees outranks an exalted one at 3.

Four. Sort the seven from highest degree to lowest.

Five. The highest is your atmakaraka. The second is the amatyakaraka, and the ranking continues down through all seven, with the lowest being the darakaraka, the planet that stands for it of the spouse.

A worked example

Suppose the degrees come out as: Saturn 27.4, Venus 24.1, Mercury 18.9, Sun 11.2, Jupiter 9.7, Mars 6.3, Moon 2.8.

Saturn is the atmakaraka. Venus is the amatyakaraka. The Moon, sitting lowest, is the darakaraka.

Notice that nothing in that example depended on which signs those planets occupied. Saturn could be debilitated in Aries and still hold the office, because 27.4 is the highest number on the list.

The tie-break, and why precision matters

A pair of planets can sit at what looks like the same degree. If your chart prints 12.4 for a pair of planets, they are not actually equal; they differ somewhere past the second decimal, and the correct answer is decided there.

This matters because rounding before ranking will swap them. A source printing degrees to the hundredth is showing you a figure accurate to about 36 arcseconds. Planets closer together than that rank arbitrarily. It depends on which one the software happened to read first. We rank at full floating-point precision so the ordering is decided by the actual positions rather than by the display format.

Why calculators disagree

The scheme. Some include Rahu and rank a wider set, at a degree subtracted from 30 because Rahu moves backwards. That changes the atmakaraka in roughly 12 percent of charts. This has its own page.

Rounding. As above. Planets within an arcminute of each other are a coin toss on a rounded list.

The ayanamsa. Sidereal astrology subtracts a value from the tropical position to get the sidereal one, and the commonly used values differ by up to about a degree. That rarely changes the ranking, because it shifts every planet by nearly the same amount. It can still matter near a sign boundary. There the degree-in-sign figure jumps by nearly 30.

That last case is the one worth checking. If any of your planets sits at 0 or 29 point something, confirm which ayanamsa produced the chart.

Do you need an exact birth time

For the atmakaraka itself, mostly not. Six of the seven planets move slowly enough that an hour either way will not reorder the list. The Moon is the exception, covering roughly half a degree an hour, so an uncertain time can move the Moon's position on the ranking.

For the house placement, yes. Houses depend on the ascendant, which moves through a full sign in about two hours.