Outer Planet Geocentric Transit Tables

Transit tables were invented by Peter Meyer in January 2011 during the development of his software to calculate the start and end dates for geocentric world transits of the sort described by Richard Tarnas in his book Cosmos & Psyche, a book which had previously inspired him to develop his Planetary Aspects and Transits software.

The concept of a transit table is explained in the user manual for the Your Planetary Transits software. A short explanation of how to read the dates in a transit table is given below, and a detailed explanation is given in the section of that user manual entitled How to Read Transit Tables.

Transit tables are given on this website for several pairs of outer planets and several different periods (from about 10 years to about 40 years). For a particular period and a particular pair of planets, a transit table will allow quick determination of the angular separation between those planets for any date in that period, to within a few degrees, provided that that separation is not more than 15°. In other words, a transit table makes it possible to determine, for a given date, whether the two planets form an aspect on that date, and if so, what aspect that is and how close to exact it is. No calculation is needed. (These dates do not depend on a choice of zodiac, since world transits are zodiac-independent.)

All transits are relative to a particular orb. In these transit tables dates are given for three orbs: 15°, 10° and 5°. A transit relative to a particular orb always begins on a certain date and ends on a certain date. For example, as shown in the first row of the table for Jupiter-Uranus transits during 1899-1915:

 Aspect   Start
15° orb 
10° orb 
5° orb 
 Minimum at   End
5° orb 
10° orb 
15° orb 
 Conjunction    1899-11-22    1899-12-25    1900-02-01    1900-03-31    1900-05-31    1900-12-22    1901-01-21    1°33'  
             1900-09-09    1900-10-20*    1900-11-21            08:15  
 Sextile    1902-03-06    1902-04-02    1902-05-05    1902-06-18    1902-08-04    1902-09-24    1903-04-06    1°59'  
         1902-11-08    1902-12-26    1903-01-25*    1903-02-20    1903-03-15        18:34  
 Square    1903-04-06    1903-04-29    1903-05-25    1903-07-01*    1903-09-23    1903-11-07    1904-05-01    03:37  

(i) a conjunction (wrt an orb of 15°) begins on 1899-11-22 and ends on 1901-01-21, (ii) a conjunction (wrt a 10° orb) begins on 1899-12-25 and ends on 1900-12-22 and (iii) a conjunction (wrt a 5° orb) begins on 1900-02-01 and ends on 1900-05-31.

When an event, such as the start or end of a transit, or an exact aspect, is said to occur on a particular date, this means that the event occurred somewhere between midnight GMT at the start of that date and midnight GMT at the end. Thus the date might need to be adjusted for a timezone other than GMT. (The exact date and time of the event for any chosen timezone can be found using the Planetary Aspects and Transits software.)

The date shown in the "Minimum at" column is the date at which the separation of the planets either became zero (in which case there was an exact aspect between the planets) or reached a minimum. An aspect which becomes exact is marked by an asterisk at the date, and the time (GMT) of the exact aspect is given in the (rightmost) "Minimum at" column. When an aspect does not become exact, the value in this column is the minimum separation reached. For example, the 15°-conjunction of Jupiter and Uranus which began on 1899-11-22 reached a minimum of 1°33' at 1900-03-31, after which the separation increased, passing 5° on 1900-05-31. Subsequently the planets moved closer together, with a 5°-conjunction beginning on 1900-09-09, and this conjunction became exact at 08:15 GMT on 1900-10-20.

Transit tables are available on this website for the following planet combinations and periods:

Since there are five outer planets there are ten possible types of outer planet transit tables. Since there are thirty 20-year periods in 1600-2200 it would take about 300 transit tables similar to those above to provide complete transit data for all outer planets for 1600-2200, so this is unlikely to be done.

You can, however, obtain the same kind of result by using the software which was used to make these transit tables, namely, Your Planetary Transits.

Jupiter moves comparatively quickly and so forms many aspects with the other outer planets during 2000-2020. It forms exact aspects with them during 2010-2014 as follows:

The exact dates of these exact aspects can be found using the Planetary Aspects and Transits software.

Uranus and Neptune were exactly conjunct three times in 1993. From 1998 to 2021 they do not form any major aspect with an exactness of less than 9°. From 2023 to 2030 they are more or less in 5°-sextile aspect.

Neptune and Pluto form many exact sextile aspects from 1970 to 1990. From 1990 to 2023 they form many 5°-sextiles, but none become exact. They again form many exact sextiles from 2025 to 2033.

Your Planetary Transits software Home Page