Part of Fortune in Astrology

The Part of Fortune — also called Fortuna or Lot of Fortune — is an Arabic lot: a mathematical point in the birth chart calculated from the relationship between three key factors. It represents the area of life where natural prosperity, joy, and a sense of rightness converge.

The Formula

The calculation differs slightly based on birth time:

• Daytime birth (Sun above horizon): Ascendant + Moon − Sun
• Nighttime birth (Sun below horizon): Ascendant + Sun − Moon

The result is a zodiac degree that is placed in the chart as a symbol (⊕ or ☽☉AS).

What the Part of Fortune Represents

The Part of Fortune synthesizes the Sun's conscious purpose, the Moon's emotional needs, and the Ascendant's life approach into a single point of potential integration. When the three are aligned — when you are living your Sun's purpose, honoring your Moon's needs, and acting through your Ascendant's natural style — you encounter the Part of Fortune's themes most fully.

House Placement

The house where the Part of Fortune falls is the most significant interpretive factor. It shows where prosperity and fulfillment are found:

• 1st house: Fulfillment through self-development and personal initiatives
• 2nd house: Prosperity through resources, values, and material security
• 7th house: Fulfillment through partnerships and collaboration
• 10th house: Prosperity through career, status, and public recognition

Aspects to the Part of Fortune

Jupiter conjunct or trine Part of Fortune: Classic indicator of natural luck, opportunity, and prosperity — things often work out.

Saturn aspecting Part of Fortune: Prosperity comes through disciplined effort, patience, and earned achievement — not luck.

Venus aspecting Part of Fortune: Financial and creative luck; prosperity through beauty, relationships, or the arts.

Related Terms

• Ascendant
• Sun
• Moon
• Jupiter
• Vertex

Calculate your free birth chart to locate your Part of Fortune and its house placement.