I answered 10-15-1990 to 1-3-1991
11-24-1990
Taurus. Is this correct?
Date Longitude
1990 Sep 06 639
1990 Sep 15 672
1990 Sep 25 71"
1990 Oct 05 742
1990 Oct 15 758
1990 Oct 25 74"
1990 Nov 04 72"
1990 Nov 14 682
1990 Nov 24 668
1990 Dec 04 62"
1990 Dec 14 598
1990 Dec 24 582
1991 Jan 03 57"
1991 Jan 13 592
1991 Jan 23 60?
1991 Feb 02 63"
1991 Feb 12 67"
Using the supplied graph paper, set the longitude numbers along the horizontal x-axis. (The origin is 0, but you can jump to 50 on the next block and then go in increments of 10 per block from 50 to 80.) Set the dates along the vertical y-axis. Set the tic mark for every 10-day interval at every other block (i.e., every two blocks). Begin with September and end with February. Assume each month has 30 days. Do not worry about the year. Connect your plotted points by a smooth curve as possible. When you have completed the graph, answer the following questions using the graph and the table.
[Graph is worth 70 pts; questions are worth 30 pts]
(a) At what date did Mars' retrograde motion begin?
(b) End?