planet watch
above the solar system
Volume 21 -- Issue 9
Above the Solar System -- September 2015

Name September 03 September 13 September 23
Mercury 269o 09' 298o 23' 333o 21'
Venus 331o 30' 007o 24' 023o 20'
Earth 340o 11' 349o 54' 359o 39'
Mars 121o 27' 125o 57' 130o 26'
Jupiter 153o 54' 154o 40' 155o 27'
Saturn 244o 46' 245o 05' 245o 23'
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 2015
Above the Terrestrial Planets - September 2015

Click here to see an animated graphic showing the
Terrestrial Planets orbiting the Sun during 2015.

Explore our Solar System with this really cool tool. Click here to go to the Solar System Scope web site.