What is a stellium in astrology?

In astrology, a stellium is a cluster of three or more planets in the same sign or house of a birth chart. It indicates a strong concentration of energy and focus in that particular area of life, as defined by the sign and house. It intensifies the qualities associated with that sign and can significantly impact personality and life experiences.

How does a stellium affect my personality?

A stellium's influence on personality is significant. The sign and house containing the stellium become dominant themes in the individual's life. For example, a stellium in Leo might manifest as a strong need for recognition and creative expression, while a stellium in the 7th house could indicate a focus on partnerships and relationships. The planets involved will further colour the expression of the stellium, with each planet contributing its own unique energy.

What planets are considered when calculating a stellium?

Traditionally, the Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn are considered when identifying stelliums. Uranus, Neptune, and Pluto are also sometimes included, depending on the astrologer and the specific calculation method. This calculator considers all planets, including Chiron, for a comprehensive analysis.

What degree range defines a stellium?

There isn't a universally agreed-upon degree range that defines a stellium. Some astrologers use a range of 8-10 degrees between planets, while others allow for a wider orb of up to 15 degrees. This calculator uses a tighter orb of 10 degrees to identify closely-knit and impactful stelliums.

Can I have multiple stelliums in my birth chart?

Yes, it's possible to have multiple stelliums in your birth chart, although it's relatively rare. Each stellium will represent a separate area of concentrated energy and focus, leading to a more complex and multifaceted personality. The interpretation of multiple stelliums requires a nuanced understanding of the interplay between the different signs, houses, and planets involved.

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Last updated: February 5, 2026•By BasedLabs Team

Stellium Calculator

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How to use Stellium Calculator

Steps to get you started in BasedLabs.

Step 1

Enter Your Birth Details

Input your date of birth, time of birth (as accurate as possible), and location of birth into the designated fields. The more accurate your information, the more reliable the results will be.

Step 2

Calculate Your Birth Chart

Click the 'Calculate' button to generate your birth chart based on the information you provided. The tool will then analyze the chart for any groupings of three or more planets within a 10-degree orb.

Step 3

Analyze the Results

Review the results to see if you have any stelliums in your birth chart. The results will show you the sign and house where the stellium is located, as well as the planets involved. Use this information to explore the deeper meanings and potential impact of the stellium on your life.

Accurate Stellium Identification

Our advanced calculator uses precise astrological algorithms to accurately identify stelliums, ensuring you receive reliable and insightful results.

Comprehensive Astrological Insights

By revealing the power of your stelliums, our tool provides valuable insights into your strengths, challenges, and overall astrological profile. This knowledge empowers you to make more informed decisions and live a more fulfilling life.

Free and Easy to Use

Our Stellium Calculator is completely free to use and requires no registration or complicated software. Simply enter your birth details and get instant results.

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Stellium Calculator