So first of all, let's see what 1st house/Ascendant and 9th house represent -
1st house/Ascendant is your self, physique, personality, overall health, life path and head in human body etc.
9th house represents Higher Education, Philosophy, Religion, Law, Faith, Fortune, Gurus, Teachings of Father (as father is 1st Guru we get) etc.
Now, what does it mean to have 1st house lord in 9th house?
It means the planet which rules/controls/owns the 1st house/Ascendant of your horoscope is sitting in the 9th house of horoscope.
Now, what is the impact of having 1st house lord in 9th house?
Its generic interpretation is that person's focus through-out life is on matters related with Higher Learnings, Teachings of Father & Gurus, Religion, Travelling etc. Life Focus also remains on meeting or staying with people of different ethnic backgrounds, hence it becomes one of the positions related with Foreign Settlement.
Results may also be different due to aspect, conjunctions of other planets or the planet being Retrograde or Combust. Moreover, now we also need to check the strength of 9th house lord as 1st house lord is going in 9th house. So again, Overall Chart Reading is important.
So, let's see how different planets will behave differently as Ascendant Lord in 9th house.
Sun - Suppose it is a Leo Ascendant chart and Sun sits in the 9th house in the sign of Aries. Guess what? Sun is exalted in Aries. This person's whole life will be about travelling different places of long distance and meeting people of different cultures. He will be seen as a person of high knowledge and almost a Guru like status. As Sun is exalted, person won't get into useless fights of which religion is better than which. They will value the contribution of Gurus, Father and any Higher Learning they received from these people. Father becomes the most important figure in life.
Moon - So it is Cancer Ascendant Chart and Moon rules the 1st house and sits in 9th house in Pisces. This shows someone who is mentally inclined towards higher spiritual knowledge. More than religion, they are into Spirituality. They are seen in Society as a person full of divine love and spiritual healing activities. A really good position which shows a person of higher philosophical learning and spiritual values. Mother of such a native is a highly spiritual lady too.
Mars - Mars can be Ascendant ruler through its two signs. So, let's take both one after the other.
Aries Ascendant - So if it is Aries Ascendant, Mars rules 1st & 8th house and sits in 9th house in Sagittarius sign. It shows a person who is very head-strong with his higher beliefs and philosophies. Although he is head-strong but it doesn't mean he will be violent. It just means that he will put his views forward courageously and will defend it with all logic. At the same time, as Mars is an Athlete and 9th house is far distant places, it shows a sportsman or sports coach who travels to different places to show his abilities and skills in sports.
Scorpio Ascendant - Now if it is Scorpio Ascendant, Mars rules 1st & 6th house and sits in 9th house in Cancer sign. Here Mars goes debilitated. This is position where Mars can make a person head-strong and violent both for his religious views as not only Mars is debilitated but it is also functional malefic with its mool trikon sign in 6th house. Moon's position as Cancer's lord becomes very important for this one. But this is one position where person needs to be careful and should not be imposing his views and beliefs on others.
Mercury - Mercury also can be Ascendant ruler through its two signs. So, let's take both one after the other.
Gemini Ascendant - If it is Gemini Ascendant, Mercury rules 1st & 4th houses and sits in 9th house in Aquarius. This position makes someone curious about higher learning. They take a lot of knowledge of religions and philosophies. In the end, they become teachers and professors of higher philosophy, as Mercury is planet of communication. So, they learn everything and make a business/earning out of it. This person likes to travel to far places continuously.
Virgo Ascendant - If it is Virgo Ascendant, then Mercury rules 1st & 10th house and sits in 9th house in Taurus. Almost similar results but here Mercury takes the shape of Analyst of Philosophies. They are those people who critically examine different philosophies and give their view point. They are also teachers but of a different category.
Venus - Venus also can be Ascendant ruler through its two signs. So, let's take both one after the other.
Taurus Ascendant - If it is a Taurus Ascendant, Venus rules 1st & 6th house and sits in 9th house in Capricorn sign. Here, Venus although loves travelling and learning about higher philosophy but as it is in Capricorn sign ruled by Saturn, these people have very restricted approach towards religion. They want to learn about only their religion and their belief. They are rigid about opening their horizon to other philosophies.
Libra Ascendant - If it is Libra Ascendant, Venus rules 1st & 8th house and sits in 9th house in Gemini. These are the real travelers. Always ready to pack their bags and board the next train. They find their loved ones in far distant places. Won't be surprised if they earn through travelling. Their love is not restricted. They don't mind dating someone from different race, religion, caste etc.
Jupiter - Jupiter also can be Ascendant ruler through its two signs. So, let's take both one after the other.
Sagittarius Ascendant - If it is Sagittarius Ascendant, Jupiter rules 1st & 4th house and sits in 9th house in Leo Sign. Prima-facie, someone who is Professor/Teacher. They may go to teach to a different place. They are highly knowledgeable people and love discussion about religion and philosophies. In this position, Jupiter truly shows its colors and person is highly regarded as a Guru in his Society. A great position.
Pisces Ascendant - If it is Pisces Ascendant, Jupiter rules 1st & 10th house and sits in 9th house in Scorpio. Here, Jupiter not only becomes teacher and philosopher of world religions but person also gets inclined towards occult. Here, religious beliefs go through lots of turmoil and transformation. It is possible for this person to change religion.
Saturn - Saturn also can be Ascendant ruler through its two signs.
In either sign (Capricorn/Aquarius) as an Ascendant, Saturn in 9th house shows that true beliefs come into life of this person with great delay and hardship. In early part of life, they will meet many Gurus, whose philosophy they won't find convincing. They will question their beliefs, their Gurus. They will go through hardship and troubles in finding their Guru and True belief but eventually they find it as Saturn will either be in Virgo or in Libra in 9th house for these Ascendants. Both are excellent positions for Saturn to be. It is better to find anything in life with hardship as you appreciate the true value of what you achieved.
Rahu - If Rahu is Ascendant Lord through its sign Aquarius, as it co-rules Aquarius along with Saturn, and sits in 9th house in Libra then 1st of all we need to make sure of Saturn's position as it is the main ruler. Rahu in Libra in 9th house shows someone who is obsessed about travelling and exploring foreign destinations. One of the positions of Foreign Settlement. At the same time, they want to strike a balance between all the religious views and beliefs. This person is obsessed for relation but at the same time desires an ideal relation.
Ketu - Likewise, If Ketu is Ascendant Lord through its sign Scorpio, as it co-rules Scorpio along with Mars, and sits in 9th house in Cancer then 1st of all we need to make sure of Mars' position as it is the main ruler. This position shows a person who is separated from mother's care. It also shows someone who doesn't find philosophies and beliefs and teachings of Gurus convincing. They always feel that real eternal truth is something else and hence they continue their investigation with Ketu nature.
Hope this covers maximum points and is helpful.
Vishal S Saxena - Astrologer.
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