[amsat-bb] AO-40 "Tweaked" Orbital Estimate

["Kenneth J. Ernandes" <n2wwd@xxxxxxxxxxxxxx>]

NORAD / Space Command Cataloged AO-40 as #26609 and International Designator
00072B with following as their first set of Keplerian elements:

AO-40 / OSCAR 40
1 26609U 00072B   00323.28483356 -.00000534  00000-0  00000-0 0    16
2 26609   6.4381 246.5653 7343684 177.6306 190.7516  2.03423689    43


I have made the following adjustment to the preliminary Keps based on
reports from tracking sites.  This differs from the Space Command elements
most significantly in mean motion.  I would appreciate any feedback in
AOS/LOS prediction quality between the Space Command elements and the
adjusted Keps listed below:

AO-40 / OSCAR 40
1 26609U 00072B   00321.07636550  .00000001  00000-0  12589-4 0    25
2 26609   6.5034 247.6325 7354802 175.8976  13.4217  2.02870994    14

Satellite: AO-40
Catalog number: 26609
Epoch time:      00321.07636550
Element set:       2
Inclination:        6.5034 deg
RA of node:       247.6325 deg
Eccentricity:    0.7354802
Arg of perigee:   175.8976 deg
Mean anomaly:      13.4217 deg
Mean motion:    2.02870994 rev/day
Decay rate:    7.84000e-09 rev/day^2
Epoch rev:               1
Checksum:              278

73, Ken Ernandes N2WWD
n2wwd@amsat.org
http://www.mindspring.com/~n2wwd



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