Getting An Ephemeris:
An Ephemeris (ee-FEM-ur-is) for an object in the sky is a listing of celestial coordinates pinpointing the object's location at a particular time as it moves in the sky. The first step in finding out where a planet will be at any given time is to find its ephemeris. At the NASA Jet Propulsion Lab (JPL) web site, you can use an Ephemeris generator program. But before you go there, you should write down the information you will need to be able to provide:
Once you are on the Ephemeris Generator page, there are many features you can request the Ephemeris Generator to list using the "Select New Output Quantities" button. But for now, keep it simple--request only:
You may want to go to the bottom of the form and click the "Reset Form" button first. Note the box at the bottom of the page that gives the output format for the RA and Dec., then click "Use Selected Settings"
Once you get the ephemeris, copy it and store it in a file on your computer, or print it out on paper. Then go to the next step: