Hindu predictive astrology consists of 9 planets ,12 rashis,and 27 constellations spread across the spectrum of 360 degree .Every rashi consist of 2 ¼ nakshatras(constellations) having in total 9 padas of 3 degree 20 minutes each.
Each planet rules over 3 constellations and except sun and moon rest of the planets rule over two rashis each.rahu ketu do not own any rashi.but they do own constellations.
KETU ASHWINI –MAGHA- MOOL
At the time of birth the constellation in which moon is transiting is our birth star,the rashi is which moon is transiting – is our moon sign and in the rashi in which sun is transiting is our sun sign.
Now count from your birth star…the birth star is called janm nalshatra..
9)param mitra(very close friend)
Suppose you are born on 31-8-2012/21:09/bhopal…The moon was in aquaris sign and was in satabhisha star which is ruled by Rahu.Jupiter comes after Rahu so stars owned by Jupiter wull be sampat and Sun will be 7th from Rahu so constellations of Sun will be nidhan(death)..Nidhan simply implies that planet is not at all in a position to deliver anything Good at all.Ans so on .
1,2,4,6,8,9 are good and 3,5,7 are bad constellations according to your personal horoscope.
Vipat,Pratyari,Nidhan constellations should be avoided always for anything new…purchasing ,travels,delivery(child birth),Always check moon`s constellation and house plus 9th lord`s constellation and house before starting anything new .It will be very beneficial.6,8,12 houses should be avoided out of which 8,12 houses should be strictly avoided.
If you know running Dasha,Bhukti,Antara also then it will be just great.You can know all this by using JHORA Software available for free