### Disclaimers and notes

Changing g, Equatorial radius etc. probably only makes sense if you are an SF writer playing with other worlds.
For earth orbits use the calculated GM and ignore the rest

Common orbits: LEO is 100-1000km e.g. ISS is 380km. MEO is 5000-10000km, Geostationary is c.36000 km (see below)

This is probably not accurate to anything like the number of DP I report, but it is pretty good.
When not using the precalculated GM, if you use the numbers for a geostationary orbit (35786km) with
g etc. copied from statistics for earth leads to an orbital time just over 1 minute off (under 0.1%)

Note that a geostationary orbit lasts 1 sidereal day (86164 seconds not 86400)

It assumes a circular orbit above the equator

The rods from the gods calculation is done via numerical crunching with time step intervals of 0.01s because I'm damned if I can hack the algebra to figure it out that way

© 2008 Francis Turner

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