Que tal in the Current Skies -- Planet Watch

Volume 7 Issue 04	April 2001

Heliocentric Coordinates For The Visible Planets -- A View From Above

Name	31.	10.	20.
Mercury	295^o 33'	329^o 51'	014^o 51'
Venus	190^o 52'	206^o 59	223^o 01'
Earth	190^o 21'	200^o 11'	209^o 59'
Mars	223^o 30'	228^o 28'	233^o 31'
Jupiter	076^o 57'	077^o 50'	078^o 42'
Saturn	062^o 19'	062^o 41'	063^o 03'

This is a coordinate system which allows for plotting a planet position along its orbital path using degrees (0^o to 360^o).

Plot planet positions using polar graph paper or the provided activity sheet. 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.

Planets in Motion at 5 day intervals — Starting April 01 2001
Above the Solar System During April

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Credits & Particulars
Credits & Particulars Heliocentric coordinates calculated with ICE (Interactive Computer Ephemeris) from the Nautical Almanac Office U. S. Naval Observatory. Graphics manipulation – Micrografx Windows Draw 6; MGI Photosuite 8 and Ulead GifAnimator. HTML done with CoffeCup 8.8 HTML Editor ++, and other way cool Coffeecup softwares. Sky image displays, charts and animations start with The Starry Night Pro. http://siennasoft.com These Articles, activities, and the monthly newsletter may be reproduced for classroom use; inclusion in another newsletter, or linked with another web site, without written permission. Any other use will require written permission. Qué tal in the Current Skies © 2001 Bob Riddle Starwalk, Inc. 1021 S.E. 7th Street. Lee's Summit Missouri. USA. 816.525.6478. Latitude: 38.905429^oN ; Longitude: 94.355376^oW.

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