The mapping of a Rasi sign into the Navamsa (D9) Chart involves dividing each 30-degree zodiac sign into nine equal segments of 3 degrees and 20 minutes (3°20′) each.
The starting point of the count in the Navamsa depends on the modality (nature) of the Rasi sign in the birth chart: [1]
- Movable (Chara) Signs (Aries, Cancer, Libra, Capricorn): Counting for the first Navamsa starts from the sign itself.
- Fixed (Sthira) Signs (Taurus, Leo, Scorpio, Aquarius): Counting for the first Navamsa starts from the 9th sign from it.
- Dual (Ubhaya) Signs (Gemini, Virgo, Sagittarius, Pisces): Counting for the first Navamsa starts from the 5th sign from it
| Navamsa Part | Degree Range in Rasi | Movable Sign Start (from 1st) | Fixed Sign Start (from 9th) | Dual Sign Start (from 5th) |
|---|---|---|---|---|
| 1st | 00°00′ – 03°20′ | 1st sign | 9th sign | 5th sign |
| 2nd | 03°20′ – 06°40′ | 2nd sign | 10th sign | 6th sign |
| 3rd | 06°40′ – 10°00′ | 3rd sign | 11th sign | 7th sign |
| 4th | 10°00′ – 13°20′ | 4th sign | 12th sign | 8th sign |
| 5th | 13°20′ – 16°40′ | 5th sign | 1st sign | 9th sign |
| 6th | 16°40′ – 20°00′ | 6th sign | 2nd sign | 10th sign |
| 7th | 20°00′ – 23°20′ | 7th sign | 3rd sign | 11th sign |
| 8th | 23°20′ – 26°40′ | 8th sign | 4th sign | 12th sign |
| 9th | 26°40′ – 30°00′ | 9th sign | 5th sign | 1st sign |
If a planet is in Aries (Movable sign) at 12°15′, it falls in the 4th Navamsa part (10°00′ to 13°20′).
EXAMPLE CHART:
When the lagna rising is Leo in natal chart in the 13degree06seconds and Leo being a fixed sign it will be mapped to the 9th sign from the fixed sign and the lagna being in 13degrees then the mapping is as follows:
Aries 0:00 to 3degree20seconds
Taurus 3degrees20seconds till 6degrees40seconds
Gemini 6degrees40seconds till 10degrees0seconds
Cancer 10degrees0seconds till 13degrees20 seconds
As the lagna is of 13 degrees the lagna of the Navamsa will be placed in the sign of CANCER
In the same way for Movable sign the first Navamsa will start from the sign itself
For Dual sign the first Navamsa will start from the 5th sign