The 4th Lord in the 10th House

The 4th lord in the 10th house is the ruler of the 4th, the Sukha Bhava, placed in the 10th, the Karma Bhava. The 4th is a kendra and the 10th a kendra and an upachaya. Which graha that lord is depends on the ascendant, so the table below answers for all twelve.

Counted from the 4th, the 10th is the 7th house, which from any house is a kendra position; counted back from the 10th, the 4th is the 7th, a kendra position from it. The 4th and the 10th face each other across the chart, so the 4th lord in the 10th aspects its own house with the 7th-house drishti every graha casts.

On the Parashari reading, in which a lord carries its house’s matters to wherever it sits, the 4th lord in the 10th reads the 4th’s matters — mother's influence, home and property, inner contentment, and vehicles — through the 10th’s: career and profession, public reputation, authority, and achievements. For the 4th lord in the 10th that is a frame, not a forecast; what it comes to depends on the graha, its dignity below, and the rest of the chart.

The 4th Lord in the 10th, Ascendant by Ascendant

Across the twelve ascendants the 4th lord in the 10th is in a neutral sign for Aries, Cancer, Leo, Capricorn, Aquarius and Pisces, in an enemy's sign for Taurus, Virgo, Libra, Scorpio and Sagittarius and debilitated for Gemini. The Sun and the Moon rule one sign each, so for Aries and Taurus, where one of them is the 4th lord, it rules no other house; for the other ten the last column gives the second house the 4th lord brings with it to the 10th.

For Leo ascendant (Mars, ruling the 4th and 9th), Libra ascendant (Saturn, ruling the 4th and 5th) and Aquarius ascendant (Venus, ruling the 4th and 9th), the 4th lord rules both a kendra and a trikona other than the 1st, and in the 10th it is in a neutral sign for Leo, in an enemy's sign for Libra and in a neutral sign for Aquarius.

The Reverse: the 10th Lord in the 4th

Where the 10th lord sits in the 4th in the same chart as the 4th lord in the 10th, each lord occupies the other’s sign, an exchange the texts call parivartana. For all twelve ascendants the 4th and the 10th have different lords, so the exchange is possible whatever the ascendant.

Related

The 4th lord in each of the twelve houses is on the 4th lord page; the houses themselves on the 4th house and the 10th house. For the method, see the 12 houses guide and our 4th house article.