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Volume 17 -- Issue 9
Above the Solar System -- September 2011

Name September 08 September 18 September 28
Mercury 075o 39' 135o 46' 182o 06'
Venus 179o 49' 195o 59 212o 05'
Earth 345o 01' 354o 44' 004o 31'
Mars 082o 22' 087o 22' 092o 17'
Jupiter 030o 36' 031o 31' 032o 26'
Saturn 199o 01' 199o 20' 199o 40'
Plot planet positions using polar graph paper or the provided activity sheet.

This uses a coordinate system which allows for the plotting of a planet position along its orbital path using degrees (0o to 360o) of heliocentric longitude. Once plotted the orbital position of one planet could be compared with that of another planet. Or the relative orbital speeds of an inner planet could be compared with that of an outer planet.

Terrestrial Planets in Motion at 5 day intervals - September 2011
Above the Terrestrial Planets - September 2011