Jupiter is the most auspicious of all planets and so His blessings are essential to any ascendant chart to ensure an overall good quality of life.
In the first house, or the ascendant house, if Jupiter is placed in His own signs (Sagittarius or Pisces) or in exaltation (Cancer), He imparts considerable longevity to the person as well as divine blessings to the native.
Such a person with a well-placed Jupiter in their first house will overcome any obstacle life throws at them. They will be undoubtedly respected by others in the society and everyone will want to associate with them. Because Jupiter aspects the 7th house from the ascendant house through His 7th aspect, the person will also enjoy a successful and happy marriage with their partner.
Jupiter is such a powerful planet that His blessings are essential to make any partnership and/or marriage last.
I have seen countless charts of people, both professionally and personally, including ones that had amazing placements of Venus but not as good for Jupiter. In many cases, they had very excellent relationships and even love marriages, but a few of them did not last because Jupiter was afflicted. Similarly, even in charts where Venus is not well-placed but Jupiter is, the person will end up with a long-lasting marriage even if they may or may not be able to love their partner or receive love as much.
Such individuals also enjoy strong immunity to black magic and possess a natural resistance to evil magics being casted against them because Jupiter is the only planet capable of protecting against life-threatening evil spells.
Additionally, Jupiter imparts wisdom – the ethical kind, not the intellectual kind (because that is the domain of Mercury). So, when Jupiter is in the first house or Lagna, the person will be wise – either innately or life will force them to overcome situations which will force them to become wise.
Such individuals are excellent mentors and guides. They have the religious and practical wisdom needed to help others to be on the right path.
Additionally, such individuals are warm-hearted, caring people who also tend to be somewhat self-sacrificing by nature. They will not hesitate to put themselves in the harm’s way to save those that matter to them.
It is said that a well-placed Jupiter in the ascendant house or Lagna Sthana can help prevent several misfortunes to the person and neutralize much of their doshas or wrong conjunctions’ effects.
Also, such individuals enjoy an overall good health with a few exceptions – such as weight gain, which may happen because they may be very fond of having good food, but that can be managed through limiting their diet and working out.
Some considerations to note here are
Jupiter in exaltation (Cancer) – Jupiter in Cancer in the ascendant house is an extremely powerful placement; the person will have an impeccable sense of morality and they will understand both right and wrong very strongly. He/she will be extremely careful to follow Dharma unless Jupiter gets afflicted by some malefic planet like Rahu; such an individual is also not defeated by their enemies as they will know both how to influence and defeat their enemies. Appearance-wise, such individuals are tall and well-built if males and slim with pleasing bodily features if females – though they will have a tendency to gain weight. In society, they are well-respected and dignified at their workplace.
Jupiter in His own signs (Sagittarius or Pisces) – in Sagittarius, Jupiter certainly gives the native a strong constitution, meaning he/she will likely have a bulky body. However, all the other benefits that Jupiter in exaltation provides to the individual. In Pisces, Jupiter’s placement ensures that the person has a good body and they may focus on their emotional aspects more. One thing to note here is that Jupiter in Pisces gives the native an overall more emotionally fulfilling life than Jupiter in Sagittarius.
Jupiter in debilitation (Capricorn) – this is a difficult placement for Jupiter because many of the benefits that Jupiter provides usually are reduced due to His debilitation in Capricorn. For instance, the person’s health may be affected and their constitution may be affected, though this also depends on the placement of Mars on his/her charts. However, such an individual will also suffer challenges in attempting to grasp or obtain higher education. They may also suffer challenges in terms of finding respect and dignity in the society although this also depends on the placement of Sun in their chart.
Jupiter Ketu conjunction – if there is a Jupiter Ketu conjunction, the person will undoubtedly be spiritual and will feel a very strong sense of detachment from worldly matters. This is because Ketu and Jupiter are both saintly and they preach detachment from worldly and materialistic matters; some astrologers consider this to be a Dosha, and it might as well be for anyone who is more interested in materialistic pursuits, but from the religious or spiritual aspects, Jupiter Ketu conjunction is considered beneficial. This placement best occurs in Sagittarius ascendants, where both Jupiter and Ketu are well-placed while Ketu performs exceptionally well in Sagittarius.
Jupiter Moon conjunction – this is also known as Gajkesari Yoga; this is formed by Jupiter Moon conjunction in the first house or Lagna Sthana of the native. This is an extremely auspicious placement because Jupiter Moon conjunction in Cancer is possibly the best combination in Vedic astrology; such an individual would have remarkable dignity, respect, success, and authority in the society. They will also be able to gain wealth and earn handsomely through ethical means. Finally, such an individual would have a long life as well as an exceptional marriage.
Some Doshas (inauspicious conjunctions) –
Kendradhipati Dosha – if Jupiter is placed in an enemy sign in the ascendant house such as Virgo (Jupiter considers Mercury as an enemy because of opposing viewpoints and perspectives), then Kendradhipati Dosha is formed. Basically, Kendradhipati Dosha is when Jupiter, Venus, Mercury, or Moon are posited in any Kendra bhava (Angular house – 1st, 4th, 7th, and 10th) in an enemy sign or in their sign of debilitation. If Jupiter is situated in an enemy sign in the 1st house, it causes Kendradhipati Dosha and makes the native fat or overweight or simply large-boned due to which they appear fat and unhealthy although they may or may not be. During Jupiter’s transits, the issues or effects of the dosha activate, thereby causing the person troubles in their career, education, and relationships.
Guru Chandal Dosha – is formed by Jupiter Rahu conjunction; if Jupiter Rahu conjunction happens in the ascendant house or Lagna Sthana, then Rahu’s malefic energies may end up corrupting or distorting the benefic energies and blessings of Jupiter in the native’s ascendant chart. Now, between Jupiter and Rahu, there is a planetary war in terms of opposing energies, but the conjunction is where the stronger planet emerges as the victor. If the Guru Chandal Dosha occurs in a sign or house where Jupiter is more powerful (such as in Cancer, Pisces, Sagittarius, etc.), then Jupiter will contain Rahu’s energies though the latter can still cause problems to some extent for the native. However, if Jupiter Rahu conjunction takes place in a zodiac sign or house where Rahu performs better (Rahu performs quite well in Aquarius, Libra, Taurus, Virgo, and Gemini), then Rahu will wholly corrupt Jupiter’s energies and the person or native will have immense knowledge and wisdom, but they will use it for their own interests.
In other cases, Jupiter’s benefic effects are seen or demonstrated when aspected by other benefic planets and/or affected or twisted when it suffers conjunctions with malefic planets. Note that Jupiter Ketu conjunction will not be considered malefic in the case of a Sagittarius ascendant in the 1st house. This is an exception to the rule; in almost any other house or zodiac sign, Ketu’s powers will overwhelm Jupiter and cause losses for the individual.