The New American Ephemeris for the 21st Century 2000-2100 at Midnight, Michelsen Memorial Edition Compiled and Programmed by Rique Pottenger, based on the earlier work of Neil F Michelsen Memorial text and Introduction compiled and written by Maria Kay Simms In 1976, Neil F Michelsen (1931-1990) compiled, programmed and published the first edition of The American Ephemeris that set new standards of accuracy for contemporary astrology. In 2006, celebrating the 30th anniversary of first publication of the first volume of work that grew to become Michelsen's comprehensive American Ephemeris series, Rique Pottenger continued the work that Neil began. Within The New American Ephemeris for the 21st Century 2000-2100 at Midnight is the familiar data and format long used and trusted by astrologers worldwide, now updated and expanded, with new features. This ephemeris is unique among others in the series for its memorial text section that documents, partially from excerpts from Michelsen's own writing, and partially from testimonials of colleagues, a history of the development of computer technology for astrology. Features of this entire 21st century edition include improvements in the computer generating program that enable finding double ingresses in a single day plus more accurate station times. Ceres, the asteroid that was elevated to planetary status by the IAU (International Astronomical Union) in 2006, has been added to the daily longitude listings in her position between Mars and Jupiter. The new planet Eris, whose discovery precipitated the IAU decisions of 2006, moves, at most, about 3 minutes per month, so her position is listed once per month in the Astro Data box, along with monthly positions for Chiron, Pallas, Juno and Vesta. A new formula increases the accuracy of monthly positions of the Galactic Center. Phenomena listed in the Astro Data column are sorted by time as well as by date. Also, the planetary ingress data includes R if the planet is retrograde when it ingresses.

The American Ephemeris 1950-2050 at Midnight, The Trans-Century Edition, is published in response to multiple requests for a one hundred year ephemeris covering these "most useful years." With the years 1950 through 2050, only one ephemeris needs to be at hand, especially when traveling, for an astrologer to do quick lookups of both birth data and transiting data over the expected life span of most people currently living. Since the 1976 publication of the first version of The American Ephemeris, 1931-1980, Neil F. Michelsen's ground-breaking series of ephemerides for astrologers have consistently set standards for accuracy in astrology, becoming indispensible to astrologers worldwide at every level from student to professional. The tradition continues with the addition of this new tropical ephemeris spanning from mid 20th century through mid 21st century. Rique Pottenger has revised and expanded the Michelsen programming with updated Jet Propulsion Laboratory data and improvements in the computer generating program that, for example, enable finding double ingresses in a single day, plus more accurate station times. A new formula increases the accuracy of the Galactic Center calculation. Other new features have been added, the most obvious of which are the dwarf planets Ceres and Eris, in response to the 2006 decisions of the International Astronomical Union. Monthly positions have also been added for the remaining three of the former four major asteroids in wide use among astrologers, Pallas, Juno and Vesta, and also for the centaur, Chiron.

The American Ephemeris 1950-2050 at Noon, Trans-Century Edition, is published in response to multiple requests for a one hundred year ephemeris covering these "most useful years." With the years 1950 through 2050, only one ephemeris needs to be at hand, especially when traveling, for an astrologer to do quick lookups of both birth data and future transits for most people he or she might encounter. Since the 1976 publication of the first version of The American Ephemeris, 1931-1980, Neil F. Michelsen's ground-breaking series of ephemerides for astrologers have consistently set standards for accuracy in astrology, becoming indispensible to astrologers worldwide at every level from student to professional. The tradition continues with the addition of this new tropical ephemeris spanning from mid 20th century through mid 21st century, which is published in two versions. This one is calculated for noon UT, and the other for Midnight UT. Rique Pottenger has revised and expanded the Michelsen programming with updated Jet Propulsion Laboratory data and improvements in the computer generating program that, for example, enable finding double ingresses in a single day, plus more accurate station times. A new formula increases the accuracy of the Galactic Center calculation. Other new features have been added, the most obvious of which are the dwarf planets Ceres and Eris, in response to the 2006 decisions of the International Astronomical Union. Monthly positions have also been added for the remaining three of the former four major asteroids in wide use among astrologers, Pallas, Juno and Vesta, and also for the centaur, Chiron. 978-1-934976-27-2 624 pages $29.95

Since the 1976 publication of his first version of The American Ephemeris, 1931-1980, Neil F. Michelsen's ground-breaking series of ephemerides have consistently set standards for accuracy in astrology, becoming indispensable to astrologers worldwide at every level from student to professional. The tradition continues with this Revised & Expanded Third Edition of The American Ephemeris for the 21st Century, 2000-2050 at Midnight. Revisions and additions are programmed by Rique Pottenger, who became head programmer for ACS Publications after Michelsen's passing. Additions and improvements include new Jet Propulsion Laboratory data and programming refinements that enable finding double ingresses in a single day plus more accurate station times. A new formula increases the accuracy of the Galactic Center. Phenomena in the Astro Data section are now sorted by time as well as by date, and R appears with Planetary Ingress Data if a planet is retrograde when it ingresses. The most notably obvious additions include the dwarf planet Ceres in daily longitude listings between Mars and Jupiter, and monthly positions are given for Eris, Chiron, Pallas, Juno and Vesta.

Available March 2008- the ultimate ephemeris for the years when all but the youngest among us were born. Neil F. Michelsen's The American Ephemeris for the 20th Century, 1900-2000 at Midnight became the most highly trusted and widely used reference work for astrologers worldwide. Now substantially revised, updated and expanded by Rique Pottenger, The New American Ephemeris for the 20th Century, 1900-2000 at Midnight, Michelsen Memorial Edition, has improvements and refinements that permit more accurate station times, a more accurate position for the Galactic Center and more. Ceres is added to daily longitude listings, Sun through Pluto, and monthly positions are provided for Eris, Chiron, Pallas, Juno and Vesta.

The Michelsen Book of Tables combines two prior books, The American Book of Tables and The Koch Book of Tables, into one volume that contains tables for both Placidus and Koch house systems, Tables of Diurnal Motion to minimize math calculations, Time Zones of the World (names and hours from Greenwich), Solar-Sidereal Time Correction, Time Correction for Longitude log tables, Universal to Ephemeris Time Correction (Delta T), various interpolation tables and more. Also included is an extensive list of major USA and international cities with longitudes and latitudes, such that with this book and your ephemeris you can calculate precise planetary positions and correct house cusps for a great many locations. Add The American Atlas or The International Atlas plus your American Ephemeris or New American Ephemeris for the years needed, and you're equipped to do accurate charts for anywhere in the world. A special bonus section "How to Cast a Natal Horoscope," by Rob Hand and Joshua Brackett, offers complete step-by-step instructions on erecting a horoscope, painlessly and accurately, plus explanations of tables and of the Koch and Placidus house systems and how each is derived. An understanding of horoscope calculation is highly useful even for those who use computer software to produce charts because one is then aware when a chart is wrong though that occasional error in data entry. Also, chart calculation is an essential skill for those seeking professional certification in astrology.

Since the 1976 publication of his first version of The American Ephemeris, 1931-1980, Neil F. Michelsen's ground-breaking series of ephemerides have consistently set standards for accuracy in astrology, becoming indispensable to astrologers worldwide at every level from student to professional. The tradition continues with this Revised & Expanded Third Edition of The American Ephemeris for the 21st Century, 2000-2050 at Noon. Revisions and additions are programmed by Rique Pottenger, who became head programmer for ACS Publications after Michelsen's passing. Additions and improvements include new Jet Propulsion Laboratory data and programming refinements that enable finding double ingresses in a single day plus more accurate station times. A new formula increases the accuracy of the Galactic Center. Phenomena in the Astro Data section are now sorted by time as well as by date, and R appears with Planetary Ingress Data if a planet is retrograde when it ingresses. The most notably obvious additions in this new edition include the dwarf planet Ceres in daily longitude listings between Mars and Jupiter, and monthly positions are given for Eris, Chiron, Pallas, Juno and Vesta.

For astrologers who study midpoints, this new 15-year ephemeris will be a "must have." Rique Pottenger has revised and updated the programming of the late Neil F. Michelsen's prior versions to extend the years, now 2006 through 2020. Ceres, newly named to the same planetary status as Pluto, is included in all midpoint combinations. Midpoints often reflect events in very close timing, when single planet transits alone may not. This book allows quick scanning of transiting midpoint combinations-a highly significant time saver over the unwieldy alternative of having to calculate each combination. An Introduction by Roger Hutcheon explains midpoint theory and the advantages of this ephemeris.

Astrologers worldwide made the late Neil F. Michelsen's American Ephemeris series best sellers. In 2006, Rique Pottenger revised and updated Michelsen's earlier work with The New American Ephemeris for the 21st Century 2000-2100 at Midnight, complete with newly named planets Ceres and Eris, plus much more. Now, following the debut of the big full century book, astrologers will find this new, lightweight 14-year version a "must have " In easy -to-scan 8.25 x 11 format, it has all the new features of its forerunner and even more. For each month you'll also find a daily Declination and Latitude Table and a detailed Daily Aspectarian. Both Ceres and Chiron are included in daily longitude positions, and in the aspectarian. In Declination and Latitude, Sun through Saturn (including Ceres) are given daily, with Chiron, Uranus, Neptune, Pluto, Pallas, Juno, Vesta and Eris in 5 day increments.

In recent years Ceres, Pallas, Juno, Vesta, Chiron and the Black Moon Lilith have gained steadily in numbers of astrologers who include them in preparing birth charts for consultation and research. This ephemeris provides one hundred and fifty years of daily longitude positions to facilitate easy scanning for adding these widely popular "extras" to any horoscope. For the four major asteroids, Ceres, Pallas, Juno and Vesta, declinations are also provided for every 4th day. Black Moon Lilith, derived from the lunar apogee/perigee, is given in True positions daily and in Mean positions every 8th day. Introductory text preceding the ephemeris pages includes a preface by Eleanor Bach, a short article on Black Moon Lilith by Maria Kay Simms and an extensive introductory article by Zipporah Dobyns, Ph.D., with mythology and interpretive examples of all five "extras" covered by this ephemeris.

This amazing volume has a wealth of information for the astrological researcher, teacher and student. A wide variety of tables are provided for varied time periods from 501 BC through AD 2100 to facilitate ease in correlating history with planetary patterns. An explanatory article by prominent astrologers precedes each table; each designed to give tips on how to use the tabular information, with examples from astrological practice and tradition. In one section, author/programmer Neil F. Michelsen, originator of the best-selling American Ephemeris series, displays mandalas constructed from calculations of orbital patterns. These striking figures are both interesting (the Venus-Earth mandala forms a heart ) and inspirational, demonstrating the beauty of the design of our Universe.