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2006 is the 30th Anniversary of the first publication of The American Ephemeris, 1931-1980 & Book of Tables. The originator of this first fully computer-generated ephemeris, the late Neil F. Michelsen (1931-1990), would have been 75 this year. Neil's programming and first printing of his ephemeris provided astrologers everywhere with highly accurate data for their calculations at an affordable price.

Now, 30 years later and 16 years after Neil's passing, The American Ephemeris, published in multiple versions and consistently updated for accuracy, still retains its standing as the most popular ephemeris internationally.

New Phenomena Data in the 2006 American Ephemeris

• Despite the IAU designation of the planet named for the Lord of the Underworld as "dwarf," Pluto stays in the daily planetary line-up.

• Ceres joins the planetary line-up, inserted in her orbital pattern between Mars and Jupiter-and a warm welcome to our new planetary Goddess! Since IAU has promoted her from asteroid to "dwarf planet," it's our bet that interest in her will spike, even among those astrologers who haven't yet routinely studied asteroids.

• The third designated "dwarf," UB313, nicknamed "Xena" but recently given the official name of Eris, is so far beyond Pluto that her position changes no more than a few minutes from one month to the next, so she has been added to the AstroData box showing monthly positions. Since she as yet has no glyph, she is listed by name.

• Rique has made improvements in the computer generating program that enable finding double ingresses in a single day, plus more accurate station times.

• A new formula has increased the accuracy of the monthly position of the Galactic Center.

• Also added to monthly positions (along with Chiron) are the three (other than Ceres) of four major asteroids studied by astrologers: Pallas, Juno and Vesta.

• Phenomena in the Astro Data column are now sorted by time as well as by date.

• Planetary Ingress data includes R if a planet is retrograde when it ingresses.

This new work is dedicated to Neil Michelsen, and as a bonus feature, you'll find an introductory text section that includes a photograph of Neil, with graphics of his chart, briefly interpreted, followed by excerpts from Neil's own writing of "A Brief History of Astro Computing Services." In addition, there are a series of quotes from leading astrologers who were his colleagues. All together, the "Remember Neil" text capsulizes much of the earliest development of computer technology for astrologers.