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why spacecraft launches are usually terminated at either perigee or apogee?
Who says they are? I'm not even sure what you are talking about as it doesn't seem to make sense.why spacecraft launches are usually terminated at either perigee or apogee?
As Phinds said ... that didn't make a lot of sensewhy spacecraft launches are usually terminated at either perigee or apogee?
I hope this thread doesn't turn into the guessing game "maybe the OP means..."Perhaps the OP is referring
The radius of the orbit is not 22,236 miles. Take a trip to Google and look up what reference point that 22,236 figure is measured from.Yes Drakkith, that's what I meant, but which formulas do I use to calculate the radius 35,786 km (22,236 miles), by knowing that its period is 24 H.