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Definition of Orbit start - ascending node?



Hi,

Can anyone clarify the definition of the start of a satellite revolution
please?

In NORAD's convention, a revolution begins when the satellite is at the
ascending node of its orbit and a revolution is the period between
successive ascending nodes. The period from launch to the first ascending
node is considered to be Rev 0 and Rev 1 begins when the first ascending
node is reached.

I believe that the Amsat definition of the beginning of a new revolution is
at perigee.

Clarification in this matter would be welcome.

73!
Helmut, VK4STR

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