Aprakash Graha / UpaGrahas (Sub-Grahas)

Excerpts from Brihat Hora Sastra

Chapter 3. Stanzas: 61 onward

Add 4 Sign 13 degrees and 20 minutes of arc to Sun's longitude at a given moment to get the exact position of the all inauspicious Dhooma.

Reduce Dhooma from 12 Rasis to arrive at Vyatipat. Vyatipat is also inauspicious.

Add six Rasis to Vyatipat to know the position of Parivesh. He is extremely inauspicious.

Deduct Parivesh from 12 Rasis to arrive at the position of Chap (Indra Dhanus), who is also inauspicious.

Add 16 degrees 40 minutes to Chap, which will give Ketu (UpaKetu), who is a malefic. By adding a Rasi to UpaKetu, you get the original longitude of Sun.

These are the Grahas, devoid of splendor, which are malefic by nature and cause affliction.

The Upagrahas are also called the Apraksha Grahas. Their position depends only on the length of the Sun. The rules are given below.

65. Effects of Sub-Grahas.

If one of these afflicts Sun, the native's dynasty will decline,

while Moon and Ascendant, respectively, associated with one of these, will destroy the longevity and wisdom. So declared Lord Brahma, the Lotus-Born.

( It is also important for Upagrahas. Important dispositors have their own names; Moon dispositor is called Subhapati,

Surya Dispositor is called Aditya.

Nakshatra dispositor (Jeeva) shows sustanence source and focus of mind.

 Arudha dispositor always shows level of influence/resource and defines the arudha (especially if arudha is empty).

For shortcut we can say that dispositor generally shows resources and creation. If it is connected to yoga then it indicate third person (need of connection/activation through additional person