Jaimini sutra or Method in Astrology : 

An ancient Indian astrologewr evolved his own method of prognostication basically

differentfrom other traditional methods. He has propounded his method in sutras

or formulas which are not so easy to follow  known as Jaimini Sutra. Naturally very

few modern Indian astrologers venture on this method of prognostication . Some

basic terms in the Jaimini system are explained here. :

Argala : The aspecting influence of a sign or its lord or of the planets in certain places are

known as Argalas. These Argalas may be benefic or malefic according to nature of the

influencing agency and act either as augmenting agent or obstructing agents.

Deity Planets ; jaimini Confers special honour on three planets on the basis of their positions

in the chart as Brahma, Maheshwara, and Rudra.

Brahma : When the lord of eighth from Atmakaraka is posited in eighth from its own house.

And the strongest of the lords of sixth , eighth and twelfth from either Ascendant or seventh

house whichever is stronger. It should occupy an odd sign and be in the visible half of the

Zodiac i.e. from Descendant to Ascendant.

Maheshwara: The lord of eighth house from the Ascendant  2. If the said lord is exalted or

in its own sign stronger of the lords of eighth and twelfth from Atmakaraka would become

Maheshwara, 3. When Rahu and Ketu join Atmakaraka or in eighth from him, the sixth

planet from Sun becomes Maheshwara. The strongest claimant is chosen for the sistinction.

Rudra: The stronger of the lords of eighth and second from the Ascendant becomes Rudra.

The other Planet if aspected by malefic, can also become nominal or supplemental Rudra.

Gulika: its longitude corresponds to the longitude of the Ascendant rising at the end of

Saturn’s Vela.

Karaka : Significators

Jaimini lays stress on Charakarakas or the changeable significators. They owe their position

by virtue of traversing a sign. The planet which has traversed highest degrees in a sign,

becomes Atmakaraka or the Prime lord or Prime significator. Other significators occupy

their positions according to their descending longitudes in a sign. Besides changeable

signification there are natural or fixed significators also which are the same as in traditional

system.

The charakarakas and sthira karaka or Fixed significators, are as following in

descending order of degrees they occupy in a sign :

1. Atmakaraka or  Prime Significator Sun.

2. Amatyakaraka or Sub Prime Significator  mercury.

3. Bhratrukaraka or Significator for Brother  Mars.

4. Matrukaraka or Significator for Mother  Moon.

5. Putrakaraka or Significator for Son  Jupiter.

6. Gnatikaraka or Significator for  Relations Mars

7. Darakaraka or Kalatrakaraka  or Significator for Wife  Venus.

8. Pitrakaraka or Significator for Father  also as the eighth significator and count  Rahu

as the eighth planet but according to some other , when two planets having the same

longitude are claimants for any one of the karaka Rahu steps in to fill the vacant

place. In case of more than on karaka being vacated, natural or fixed significators

take their place.

Lagna or Ascendant (Jaimini) :

1. Arudha lagna :  Arudha lagna also called pada lagna. Count as many signs from

the birth lord as the lord is removed from the Ascendant.The resultant sign is

Arudha or Pada Lagna.

2. Bhava lagna :  Divide  birth ghaties by 5 and take the integral quotient. Add one

to it and now count this number of places from Sun or Ascendant, as the

Ascendant is odd or even. The resultant sign is bhava lagna. The remainder

after dividing birth ghaties by 5 five, when reduced to degrees gives longitude of

the Bhava Lagna.

3. Ghatika Lagna : Divide birth ghaties by 12 . Reject the quotient and integral part

of the remained added by one and counted from the Ascendant gives Ghatika

Lagna.The fractional part reduced to degrees gives its longitude.

4. Hora Lagna : Divide the birth ghaties by 2.5 and the quotient plus one counted

from Sun or Ascendant, as the Ascendant is odd or even, represents the Hora

Lagna. The remainder reduced to degrees gives its longitude.

5. Nisheka Lagna : Nisheka Lagna  also called  Adhana Lagna. Jaimini does not

give any particular method for finding conception time from birth horoscope.

There is one from Parashara Add the distance from Sun to Mandi to the

distance from 1^st  to 9^th house. Count the Sun  backwards in the terms of signs.

It will represent the interval in the months between the time of birth and the time

of conception.

6. Upapada Lagna : Take twelfth house from the Ascendant. Find out its Pada

Lagna or Arudha lagna. This becomes Upapada Lagna.

7. Varnada Lagna : If Ascendant is in odd sign, count from Aries to Ascendant. If

Ascendant is in even sign, count from pisces toAscendant in the reverse order.

Repeat this process with hora lagna also. If both the ascendants are even or odd

, add the two sums, if one of them is odd and the  other even, then take their

difference.Expunge the  multiples of 12. You get a number as remainder. Count

from aries direct  if the Ascendant is odd or from pisces if it is even. The

resultant sign is varnada lagna.

The Varnada signs for other eleven signs can also be calculated similarly by

treating  those signs or Ascendant.

Periods :  Jaimini has mentioned following types of periods :

1. Chara dasha

2. Sthira or Fix dasha

3. Trikona dasha

4. Shula dasha

5. Rashi dasha

6. Kendra dasha

7. Varnada dasha

8. Udu dasha

9. Navamsa dasha

10. Brahma dasha

11. Yogardha dasha

12. Drig dasha

13. Nakshtra dasha

14. Mandooka dasha