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What Are Stelliums? When Multiple Planets Cluster in One Sign
Natal AI Team(Astrology & AI Research)•
If you've looked at your birth chart and noticed a "traffic jam" of symbols all crowded into one section of the wheel, you likely have a Stellium.
A stellium is one of the most powerful features of a natal chart. It acts like a spotlight, focusing a massive amount of planetary energy into a single zodiac sign or astrological house. This guide explains how to identify your stellium, what it means for your personality, and how to balance its intense energy.
In astrology, a stellium occurs when three or more planets are clustered together in the same zodiac sign or house.
Think of your planets as different characters in a play. Usually, they are spread out across the stage (the chart). But in a stellium, three or more actors are standing in the same spot, shouting their lines at once. This creates:
To find your stellium, use our free birth chart calculator. Look for a cluster of three or more planets in one of these categories:
When the planets are all in the same Zodiac Sign. For example, a "Scorpio Stellium" means you have three or more planets in Scorpio. You embody the core traits of that sign with extreme intensity.
When the planets are all in the same House. For example, a "10th House Stellium" means you are intensely focused on your career and public reputation, regardless of which signs are involved.
| Stellium Type | Primary Focus |
|---|---|
| Zodiac Sign | The Style of your behavior (e.g., Intense, Bold, Practical) |
| House | The Area of your life (e.g., Career, Relationships, Home) |
The "feel" of your stellium is determined by which planets are involved.
For more on how these planets interact, read our natal chart aspects guide.
The biggest challenge with a stellium is narrowness. If you have a 1st House stellium (all about Self), you might struggle with 7th House themes (Partnerships).
To find balance, look to the Opposite Sign.
Stelliums are notoriously difficult for traditional astrology apps to interpret. Most apps will just give you three separate readings for each planet. They don't know how to "combine" them.
Natal AI uses Generative AI to synthesize the cluster. Our AI sees that your Mars, Venus, and Mercury are all in Leo in the 5th House, and it creates a unified interpretation of your creative drive and romantic style. It understands that these planets aren't acting alone — they are a "team" of energy.
Do you have a stellium? Find out by generating your free birth chart. Look for the clusters, and then use our AI Chatbot to ask: "What does my [Sign] stellium mean for my career?" or "How can I balance the intensity of my [House] stellium?"
Want to know more about the individual components of your chart? Read our guide to the 12 houses or learn about your Sun, Moon, and Rising signs.