Re: Globalstars and Delta Burns Observed

Ron Lee (ronlee@pcisys.net)
Sat, 10 Jul 1999 12:10:37 -0600

  Soon after the
>burn started, I made a note that it was turning.  I believe the initial
>plume direction was to the NE from my perspective or about 1 o'clock
>from its direction of motion perspective.

This may be misleading.  Since the burn duration was only seven seconds,
I believe that I saw turning AFTER the burn ended.  I thought I saw a
secondary brightening after the initial burn. If I did, I suspect I 
saw the initial release of excess propellants/pressurants.  I also
suspect that those ports are perpendicular to the thrust axis which
would cause the turning I observed.  It also would account for seeing
effluent for about 80 seconds.

If someone has the real sequence of events for the depletion burn and
afterwards, I would appreciate knowing if my assumptions are close.

I realized after the fact that I did not record every aspect of the 
event...hence the desire to video future burns to make up for my
lack of detail.

The rocket body has a different inclination that may coincide with
by obs of it being offset to the velocity vector.  Of course the mean
motion of 22 revs/day is incorrect!  The eccentricity per the ISI
Consulting website should be closer to 0.0646, the inclination 51.8
and the mean motion around 14.01 revs/day

GLOBALSTAR MO32
1 25851U 99037A   99191.43302173 -.00000107  00000-0  00000+0 0    13
2 25851  52.0103 315.9533 0017926 245.9263 114.0701 12.74308640    08
GLOBALSTAR MO30
1 25852U 99037B   99191.51154291 -.00000107  00000-0  00000+0 0    19
2 25852  51.9923 315.7552 0009247 272.2999  87.6784 12.72974114    12
GLOBALSTAR MO35
1 25853U 99037C   99191.51151878 -.00000107  00000-0  00000+0 0    18
2 25853  52.0023 315.7417 0008352 256.3795 103.6153 12.73108913    04
GLOBALSTAR MO51
1 25854U 99037D   99191.57567551 -.00000107  00000-0  00000+0 0    14
2 25854  52.0022 315.5308 0008468 269.3530  24.6232 12.72824112    16
DELTA R/B (1)
1 25855U 99037E   99191.43301959 -.00034537  21807-3  00000+0 0    13
2 25855  53.6134 319.2643 3542853 282.7678 359.0350 22.12322117    05

Ron Lee