SSNBODY A Nbody Package
=======================

Package version: 1.22 for Unix/Linux and Windows 98/2000/XP

First version: January 2003
Latest update: 2008-07-27 

Author
======

Stefan Spaennare, Lund, Sweden 

E-mail: stefan@spaennare.se

Home page:

http://www.spaennare.se/index.html

Please download the package and the documentation from the web-page:

http://www.spaennare.se/ssnbody.html


Package history
===============

2008-07-27, 1.22: Extended mode output added to nbody.c and nbodyl.c.
The C-programs in the Linux package are now recompiled using gcc 4.3.0.
The C-programs in the Windows package are now recompiled using DJGPP
(gcc) 4.2.3. 

2006-10-09, 1.21: Very minor updates to nbody.c and nbodyl.c. Some examples
changed and added. The nbody integration and error calculation example for
the Solar system are now made in correct way in ecliptic coordinates (with
the 5 asteroids).

2006-09-18, 1.20: The programs oscel.c, eq2eclp.c, eq2eclv.c, ecl2eqp.c,
ecl2eqv.c added. Very minor updates to nbody.c and nbodyl.c. The programs
nbplotl.c and nbplotd.c updated. Some new examples added. The files sma80.403
and sma80v.403 with JPL data corrected. Data for the asteroids are now rotated
from ecliptic to equatorial coordinates in these files. JPL data (DE 403)
for the Sun and the planets are given in equatorial coordinates and it must
be the same for the asteroids. ALLEGRO 4.2.0 was used with Linux for the
plot programs and version 4.0.3 with Windows 98/2000/XP (to work with the
old Microsoft Visual C/C++ 6.0 compiler). For the other programs the GNU
gcc 4.1.1 compiler was used with Linux and DJGPP (gcc) 4.1.0 compiler was
used with Windows 98/2000/XP.

January 2003, 1.00: First version of the package.

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End of readme.txt file.