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Volume 17 -- Issue 1
Above the Solar System -- January 2011

Name Jan 7 Jan 17 Jan 27
Mercury 181o 43' 216o 26' 245o 26'
Venus 148o 29' 164o 44 180o 57'
Earth 106o 19' 116o 30' 126o 40'
Mars 297o 42' 303o 51' 310o 04'
Jupiter 008o 14' 009o 09' 010o 04'
Saturn 191o 00' 191o 19' 191o 39'
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 — January 2011
Above the Terrestrial Planets - January 20110