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*Subject*: [amsat-bb] Definition of Orbit start - ascending node?*From*: "Helmut Strickner" <hstr@xxxxxxxxxx>*Date*: Thu, 17 May 2001 17:08:05 +1000

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 ---- Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA. To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

**Follow-Ups**:**R: Definition of Orbit start - ascending node?***From:*elio sequino

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