Volume 16 Issue 1January 2010
Heliocentric Coordinates For The Visible Planets -- A View From Above
Name Jan 06 Jan 16 Jan 26
Mercury 111o 38' 164o 21' 203o 07'
Venus 222o 15' 298o 04 313o 52'
Earth 105o 32' 115o 44' 125o 54'
Mars 119o 03' 123o 35' 128o 05'
Jupiter 334o 55' 335o 49' 336o 43'
Saturn 178o 44' 179o 04' 179o 25'
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 2010
Above the Terrestrial Planets - January 2010
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