Machine-readable Ephemeris Tables

 

Anyone doing astrological research, especially people interested in astro-trading, may need tables of planetary positions over a range of dates as input to a computer program. For a modest fee we can provide such data. Specifically we can provide one or more text files (which are thus machine-readable or can be loaded into Excel) as follows:

Such a table (tropical zodiac, granularity of 1 day, Sun, Moon and all planets from Mercury to Saturn) looks like this:

Table of daily geocentric positions of planets in signs at 12:00 GMT using the Tropical Zodiac
SuD = Degrees of Sun's position, SuM = Minutes, SuSn = Sun's sign, '*' = planet is retrograde
YYYY-MM-DD,SuD,SuM,SuSn,MeD,MeM,MeSn,VeD,VeM,VeSn,MaD,MaM,MaSn,JuD,JuM,JuSn,SaD,SaM,SaSn,MoD,MoM,MoSn,
2017-08-01,  9, 26, Leo,  6, 27, Vir,  1,  1, Can,  7, 43, Leo, 17,  4, Lib, 21, 38,*Sag, 29, 57, Sco
2017-08-02, 10, 23, Leo,  7, 15, Vir,  2, 10, Can,  8, 22, Leo, 17, 12, Lib, 21, 36,*Sag, 11, 51, Sag
2017-08-03, 11, 21, Leo,  7, 60, Vir,  3, 20, Can,  9,  0, Leo, 17, 20, Lib, 21, 34,*Sag, 23, 44, Sag
2017-08-04, 12, 18, Leo,  8, 41, Vir,  4, 29, Can,  9, 39, Leo, 17, 29, Lib, 21, 32,*Sag,  5, 39, Cap
2017-08-05, 13, 15, Leo,  9, 18, Vir,  5, 39, Can, 10, 17, Leo, 17, 37, Lib, 21, 30,*Sag, 17, 41, Cap
2017-08-06, 14, 13, Leo,  9, 51, Vir,  6, 48, Can, 10, 56, Leo, 17, 46, Lib, 21, 28,*Sag, 29, 51, Cap
The table can be made for a particular timezone, e.g. each day at 09:00 Standard Indian Time (GMT+5:30). The ecliptic longitude of a planet does not depend on the geographical position of an observer.

The ephemeris for the entire month of August 2017 is in this zip file.

The price for such a file is US$10 plus 2.7 cents per line. To purchase a text file containing a 1-year ephemeris of the same form as above — 12:00 GMT each day, including all ten 'planets' (Sun, Moon, Mercury to Pluto) — for 2016, 2017 or 2018 click on one of the links below (this takes you to our "Hermetic Systems" order page):

If you wish to order one or more tables which are not in the form shown above, that is, one or more of: a different timezone, smaller set of planets, without zodiac sign, with ecliptic longitude rather than degrees-in-sign, a different year or for more than three years (or tables for heliocentric planetary positions instead of geocentric) then please contact us with details of what you need.

These ephemeris tables are based on ecliptic longitudes calculated using a translation into C of FORTRAN routines written by astronomer Robert van Gent, based on algorithms given in P. Bretagnon & J.-L. Simon, Planetary Programs and Tables from -4000 to +2800 (Willmann-Bell Inc., Richmond, 1986). These calculations have been validated by comparison with the JPL Horizons ephemerides.

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