A.S. - three additional scripts created to aid use: 1) compile.sh - run “sh compile.sh” to compile all the necessary packages. 2) clean.sh - run “sh clean.sh” to clean the folder of the previous run. It may be true that every time you want to run a new run you need to first run clean.sh and then compile.sh 3) analysis.sh - run “analysis.sh” to extract the orbital parameters from the data files, move them to analysis/ folder, and calculate the energy. This tar file contains all the files necessary to compile and run the Mercury N-body integrator package, version 6.2. The following files should be present: big.in close.in close6.for element.in element6.for files.in mercury.inc mercury6.man mercury6_2.for message.in param.in small.in swift.inc Start by looking at the manual contained in mercury6.man mercury6_2.for contains the source code for the integrator. element6.for contains source code for a programme to turn compressed output from mercury into coordinates or orbital elements for each object. close6.for contains source code for a programme to provide details on close encounters during an integration.