HOMEWORK ASSIGNMENT ARE DUE AT 11:59 PM ON THE DUE DATE. If you wish, you may hand in your homework in class on the day before the due date.
Note: To view the homework PDF files, you will need the Adobe Acrobat Reader,
available from http://www.adobe.com.
- Homework #1 (due 9/6/18, 11:59 pm)
- Homework #2 (due 9/13/18, 11:59 pm)
- Homework #3 (due 9/18/18, 11:59 pm)
- Homework #4 (due 10/9/18, 11:59 pm)
- Homework #5 (due 10/16/18, 11:59 pm)
- Homework #6 (due 10/25/18, 11:59 pm)
- Homework #7 (due 11/13/18, 11:59 pm)
- Homework #8 (due 11/20/18, 11:59 pm)
- Homework #9 (due 12/5/18, 6:00 pm)
- You may find the Julian day using either NASA
or the NASA JPL Web site.
There is also a simple computer program for computing the Julian day here.
- If you wish to check your final answer, go outside around dusk and see if Mars is where you predicted it would be.
For a more precise check, visit the NASA Jet Propulsion Laboratory HORIZONS System
- Change the Target Body to “Mars”
- Change the Observer Location to “Washington (USNO) DC”
- Change the Time Span to include Dec. 6, 2018, and set the calculation interval to 10 minutes.
- Under Table Settings, change “angle format” to “decimal degrees”
- Click the “Generate Ephemeris” button. Look for the line that reads “2018-Dec-06 00:50” and check the R.A. and DEC.
against your right ascension and declination. They won't match exactly, since JPL's calculation is more precise than yours, but it should be close.
Dr. David G. Simpson: