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:
- Over any range of dates from January 1, 1600, to December 31, 2099
- Tropical or sidereal zodiac
- Geocentric planetary positions as position‑in‑sign (e.g. 22°14' in Aries), ecliptic longitude in degrees (e.g. 273°19') or ecliptic longitude in radians (e.g. 4.3211)
- With a granularity of 30 minutes, 1 hour, 1 week, 1 month or 1 year
- For any subset of Sun, Moon, and the planets Mercury to Pluto (or all of them)
- With or without the zodiac sign in which the planet is located
- With or without showing whether the planet is retrograde
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.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 ephemeris for the entire month of August 2017 is in this zip file.
The price for such a file is US$10 plus 1 cent/line, less $1 for more than 1 year. To purchase a text file containing a 1-, 2- or 3-year ephemeris as above — that is, including all ten 'planets' (Sun, Moon, Mercury to Pluto) — for 2017, 2018 or 2019 click on one of the buttons below (this takes you to our "Hermetic Systems" order page). We shall then contact you regarding your preferred time-of-day and time zone (if not 12:00 GMT) and which years (if more than one).
If you wish to order one or more tables which are not as shown above, that is, one or more of: a smaller set of planets, without zodiac sign, with ecliptic longitude rather than degrees-in-sign, 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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