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International Sidereal Astrology Association (ISAA) Logo

International Sidereal Astrology Association

Advancing Sidereal Astrology with Integrity, Research, and Professional Excellence.

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ISAA
ISAA
ISAA
The world's first organization dedicated to sidereal astrology!
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The International Sidereal Astrology Association (the ISAA) is a nonprofit organization dedicated to preserving, promoting, and advancing sidereal astrology as a rigorous, research-based discipline rooted in the observable sky.

Founding Member
Site Admin, Moderator
Mesopotamian, Western, Vedic

We support all sidereal astrology traditions and techniques!

PO Box 53 Green Bay, WI 54301

Founded by Nicole Tennessen, Abbeygale Quinn, and Elise Martin in 2025.

Pisces (Western)
Pisces (Western)
Gemini

Support the Mission

Your contribution helps preserve and promote sidereal astrology. The ISAA is dedicated to educating the public, certifying sidereal astrologers, and restoring the original, ancient celestial wisdom. Every donation goes directly toward this mission—supporting research, outreach, and global community building.

International Sidereal Astrology Association First Annual Sidereal Astrology Conference Gary O'Toole Dr Dani Inman Athen Chimenti

Stay Connected to ISAA

Subscribe to our mailing list and be the first to know about membership updates, exclusive sidereal astrology research, upcoming courses, and special events! Get early access to new educational content, receive member-exclusive discounts and offers, and stay informed on the latest developments in sidereal astrology!

Follow ISAA On:

Twitter/X | Facebook  | Substack

International Sidereal Astrology Association (ISAA) Logo

Mail: PO Box 53 Green Bay, WI 54301 | +1 920-455-5662 | Email: info@siderealinternational.org | Tech Support: support@siderealinternational.org

© 2025 Copyright International Sidereal Astrology Association 2025. All rights reserved.

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International Sidereal Astrology Association
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