Topic:  2 body problem cont., getting mercury6 to work,
 Intro to Perturbation Theory
 
For Tues 9.27:

1.  Start reading section 6, especially 6.2, 6.7-6.9 (up to eq. 6.171).
   Try derive one of 6.145-6.150, and one of 6.170-6.171.
   In your readings,
   skim 6.4 (intro to "literal expansion", i.e. expansion in e and I), 
       to get a rough sense, and also for eq. 6.67.
   Skip 6.3 (expansion in alpha), 6.5 (which is summarized in Appendix B) and 6.6. 

2 --do Mercury problem described in 09_20.txt
  --repeat, but with both Jupiter and Mercury, 
    where aJ=5.2AU, aM=0.39AU, eJ=0, eM=0.2, iJ=0, iM=0
     (i.e. semimajor axes, eccentricities, and inclinations)
    What is Mercury's precession rate?
  --read section 2.10 (pp. 57-60)