l, Vikshepa, is the Celestial Latitude, the latitude of the planet, the angular distance of the planet from the Ecliptic.
i is the inclination, inclinent of Orbit.
Sin l = Sin i Sin ( Heliocentric Long – Long of Node ).
Celestial Latitude is calculated from this equation.
The longitude of the Ascending Node, pata, is minussed from the heliocentric longitude and this angle is called Vipata Kendra.