Yoga can lose potency - an example of Gaj Kesari
Gaja Kesari Yoga in Context
Classical Rule: Gaja Kesari Yoga forms when Jupiter is in a kendra (quadrant) from the Moon. It is considered highly auspicious, conferring wisdom, prosperity, and protection.
Your Case: Moon is the 8th lord (a dusthāna lord, associated with longevity, obstacles, hidden suffering).
Moon is placed in the Rahu–Ketu axis (RKA), which already disturbs its purity and emotional stability.
Jupiter is in the 8th house, though exalted (Cancer), and in kendra from Moon.
Strengths vs Weaknesses
Strengths
Exalted Jupiter: Jupiter in Cancer is at its peak strength, giving immense wisdom, resilience, and protective grace.
Yoga technically exists: The kendra relationship between Moon and Jupiter does activate Gaja Kesari Yoga.
Moon as 8th lord: The yoga is tainted because the Moon itself carries the energy of obstacles, hidden karmas, and vulnerability.
Rahu–Ketu affliction: The Moon’s placement in RKA weakens its beneficence, creating instability in mind and health.
8th house Jupiter: Even exalted, Jupiter in the 8th tends to give hidden strength rather than visible prosperity. It can manifest as deep spiritual wisdom, occult knowledge, or resilience in crises, but not the full worldly benefits of Gaja Kesari.
Net Assessment
This yoga is present but compromised.
It will not deliver the full grandeur of Gaja Kesari Yoga (fame, prosperity, protection).
Instead, it manifests as inner strength, spiritual wisdom, and resilience in adversity.
The native may face challenges (due to Moon’s affliction and 8th house emphasis), but Jupiter’s exaltation ensures they rise through crises with dignity and insight.
In short: A modified Gaja Kesari Yoga — powerful in spiritual/occult dimensions, but limited in material prosperity.