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Volume 17 -- Issue 4
Above the Solar System -- April 2011

Name Apr 7 Apr 17 Apr 27
Mercury 189o 31' 222o 38' 251o 02'
Venus 292o 42' 308o 30 324o 20'
Earth 196o 50' 206o 39' 216o 24'
Mars 354o 19' 000o 36' 006o 49'
Jupiter 016o 29' 017o 24' 018o 19'
Saturn 193o 58' 194o 18' 194o 37'
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 - April 2011
Above the Terrestrial Planets - March 20110