Vedajyot Jyotish Library

Determining the Natal Star from Prasna Lagna and Udaya Lagna

By: Vedajyot Research Mandal — led by founder Sneha Shukla

Determination of Natal Star from Prasna Lagna and Udaya Lagna

The natal star can be determined by counting the number of rasis (zodiac signs) between the Prasna Lagna (ascendant at the time of query) and the Udaya Lagna (ascendant at sunrise on the day of the query).

Key Steps:

  • The count is always from Prasna Lagna to Udaya Lagna, not vice versa.
  • For example, if the Prasna Lagna is Gemini and the Udaya Lagna is Pisces, the difference is 10 rasis.
  • Counting from Ashwini (the first nakshatra), the 10th star is Makha, which is the natal star.

Alternative Method:

  1. Multiply the difference of rasis by 2.
  2. Add the number of the ruling asterism at the time of query.
  3. Divide the sum by 27.
  4. The remainder corresponds to the natal star counted from Ashwini.

Example:

  • Difference of 10 rasis (multiplied by 2 equals 20).
  • If Poorvabhadra is the ruling star (26th star), the sum is 46.
  • Dividing 46 by 27 leaves a remainder of 19, which corresponds to Moola as the natal star.

Additional Method:

  • The Prasna Matras (numerical value of the querist's words) can be added twice and thrice, then divided by 27; the remainder counted from Ashwini reveals the natal star.

Rays Assigned to Rasis:

  • Aries: 9
  • Taurus: 8
  • Gemini: 14
  • Cancer: 8
  • Leo: 11
  • Virgo: 9
  • Libra: 6
  • Scorpio: 7
  • Sagittarius: 5
  • Capricorn: 10
  • Aquarius: 8
  • Pisces: 14

Rays for Planets from the Sun:

  • Mercury: 20
  • Venus: 18
  • Mars: 12
  • Jupiter: 14
  • Saturn: 8
  • Rahu: 18
  • Ketu: 10

Finding the Janma Rasi (Birth Sign):

  • Multiply the rays of the Prasna Lagna sign by the rays of the planet in that sign.
  • Divide by 12, and the remainder indicates the Janma Rasi counted from Aries.
  • If no planet is present in the rasi, multiply the rays of the rasi by the rays of the planet and divide by 27; the remainder corresponds to the nakshatra.

Note: Dividing by 12 instead yields the Janma Rasi.

💡 Astrologer's Insight

Determining one's natal star using the Prasna Lagna and Udaya Lagna is a unique and intricate method in Vedic astrology. By examining the relationship between these two ascendants, astrologers can gain profound insights into an individual's life path and personality traits. This approach not only highlights the dynamic nature of astrological readings but also emphasizes the importance of precisely calculating the positions of celestial bodies at specific moments in time to derive meaningful interpretations.

🛠️ Practical Tip

Daily Remedy: Ensure accurate calculations by using reliable astrological software or consulting a knowledgeable astrologer, as errors in either Prasna or Udaya Lagna can lead to incorrect star determination.

❓ Frequently Asked Questions

Q: What is the significance of the natal star in Vedic astrology? A: In Vedic astrology, the natal star provides insights into a person's personality traits, life path, and potential challenges or opportunities.

Q: How can one calculate their natal star? A: The natal star can be calculated by counting the zodiac signs between the Prasna Lagna and the Udaya Lagna or using more complex methods involving ruling asterisms and mathematical calculations.

Q: What if there are no planets in my Prasna Lagna sign? A: If there are no planets in your Prasna Lagna sign, you can multiply the rays of the rasi by the rays of a relevant planet and divide by 27 to find the corresponding nakshatra.


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© 2026 Vedajyot AI. This analysis combines classical Vedic principles with modern astrological research.