[ntp:questions] Google and leap seconds

[David Woolley]

Chris Albertson wrote:

> 
> If you just start thinking of random orbits you will have the problem
> that something bad happens, like one a month all of then are on one
> side of the Earth or something dumb like that.    Quickly you find the
> orbits must be an integer fraction or multiple of the Earth's rotation
> period.  a factor of "1" is is very high and takes a lot of energy to

I suspect one reason for having them come back to the same place each 
day within a few minutes is that you tweak the orbits to optimised the 
constellation in a war zone and then not have to spend fuel maintaining the