[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

*Subject*: FW: [amsat-bb] AO40 velocity*From*: Robert McGwier <rwmcgwier@xxxxxxxxxxx>*Date*: Fri, 30 Aug 2002 07:14:05 -0400

Stacey's value for mu, 3.995e14 is correct, I did the conversion wrong. -----Original Message----- From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On Behalf Of Robert McGwier Sent: Thursday, August 29, 2002 6:12 PM To: Amsat Bulletin Board Subject: RE: [amsat-bb] AO40 velocity Bob: The Vis-viva equation is what you are looking for I think. V^2 = mu (2/r - 1/a) where r is the distance of the satellite from earth center and a is the semimajor axis. mu varies according to the units you use. If the units are in earth radii, then mu is 1 and the velocity squared is given in (earth radii per second)^2. You take the square root of this to get velocity. If you measure the distances in meters, I believe mu is approximately 1501416 if I did the conversion correctly! Bob N4HY ---- Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA. To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

- Prev by Date:
**FW: AO40 velocity** - Next by Date:
**FW: AO40 velocity** - Prev by thread:
**FW: AO40 velocity** - Next by thread:
**FW: AO40 velocity** - Index(es):