Volume 14 Issue 9September 2008
Heliocentric Coordinates For The Visible Planets -- A View From Above
Name Sep 7 Sep 17 Sep 27
Mercury 266o 34' 295o 31' 329o 46'
Venus 224o 04' 240o 02 255o 56'
Earth 344o 44' 354o 28' 004o 15'
Mars 208o 41' 213o 26' 218o 15'
Jupiter 292o 29' 293o 20' 294o 10'
Saturn 162o 01' 129o 22' 162o 43'
Plot planet positions using polar graph paper or the provided activity sheet.

This is 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 2008
Above the Terrestrial Planets - September 2008
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