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About the ISAA

The International Sidereal Astrology Association (ISAA) is a federally recognized 501(c)(3) nonprofit educational organization founded in 2025 to advance the academic study, preservation, and professional practice of sidereal astrology. Established by a visionary consortium of astrologers, researchers, linguists, and spiritual scholars, the ISAA exists to promote astronomy-based astrology as a serious field within the humanities—integrating historical research, philology, cultural reconstruction, comparative religion, and the study of ancient cosmologies. 

The ISAA is committed to astronomical precision, textual integrity, and the responsible reconstruction and practice of astrological systems from ancient to modern times.

As an educational institution, we focus on curriculum development, certification standards, research publication, historical translation projects, ethical guidelines, and professional advancement for sidereal astrologers worldwide.

Our mission is to restore astrology to its rightful place at the intersection of science, spirituality, and the humanities through rigorous scholarship, institutional accountability, and global collaboration.

ISAA Board of Directors

Nicole Tennessen

President, Co-Founder

Abbeygale Quinn

Secretary, Co-Founder

Stephanie Meyering

Treasurer, Director of Administration

Michael Hartigan

Board of Directors

Gary O'Toole

Board of Directors

Founding Members

International Sidereal Astrology Association (ISAA) Founding Member Seal

We are proud to honor our Founding Members—visionaries whose lifetime membership contributions are laying the cornerstone of the ISAA. Their early commitment is a declaration that sidereal astrology deserves rigor, preservation, and institutional continuity.

Through their leadership, they are helping establish a permanent foundation upon which future generations of astrologers will build, research, teach, and practice.

When you become a Founding Member, you play a major role in building the future of Sidereal Astrology for future generations.

Dr. Dani Inman

ISAA Default Profile Picture

Deborah Dillard

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International Sidereal Astrology Association
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