Acceleration Report : 9 Dec '96 : 87-106 B, 92- 12 B

Kurt Jonckheere (kjonckheere@unicall.be)
Mon, 9 Dec 1996 22:47:05 +0100

I just received Willy Verhaegen's observations of November 1996.
He isn't on the Web, but is a regular observer and observed some
of these high priority objects.
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Observations of the following objects are needed very urgently :

The following objects had a jump in Mean Motion and * MIGHT * accelerate:
21938 = 92- 20 B    18710 = 87-106 B       21903 = 92- 12 B

The following objects had a jump in Mean Motion and ARE ACCELERATING !
21876 = 92-  8 B           

The following objects had a jump in Mean Motion and HAD ACCELERATING 
but there flashing period is are already going up again!
21984 = 92- 30 J 

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18710 = 87-106 B
The Semi major axis decreased with about 50 m during the last month.
In September Leo Barhorst saw it with 72 seconds.
87-106 B 96-11-14 18:36      WV   51.4 3.0   1 51
87-106 B 96-11-15 19:03      WV                       LP
87-106 B 96-11-23 17:22      WV   55   3.0   1 55
Willy saw it during the acceleration.  The period is lower that what Leo
saw, but there is no *distinct* acceleration to a low period.  
During to the large period we need more observations to jump 
to conclusions.

Cosmos 1904 r    7.4  2.4  0.0  5.5 v (from Ted Molczan's file, thanks !)
1 18710U 87106  B 96340.04797786  .00000490  00000-0  51081-3 0  2577
2 18710  82.9100 153.2924 0026630 138.4903 221.8268 13.75192758449240

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21876 = 92-  8 B 
Evolution of the Flash Period of this rocket : 
92-  8 B 96-11-06 18:10      KJ  155.4 1.5   8 19.4   FF, 4->inv, later MM
92-  8 B 96-11-06 18:11      WV  159.4 0.5   8 19.9
92-  8 B 96-11-15 17:04      KJ  179.0 0.4  14 12.79
92-  8 B 96-11-15 17:04      WV  127.9 0.3  10 12.79
As you can see Willy confirmed my last observation VERY well !  
So this object is definitely accelerating !  Is the period still going down ?

For the moment this object is only visible for our Southern latitude
observers.  Who joins the club by making the next observation ?
Latest elements : 
Cosmos 2180 r    7.4  2.4  0.0  5.5 v
1 21876U 92008  B 96339.84470427  .00000099  00000-0  10367-3 0  7883
2 21876  82.9256 287.2379 0037339  73.7000 286.8252 13.74518757240634

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21903 = 92- 12 B
The Semi major axis has been going down since November 20, 1996. 
Was seen on November 15 by Vince Gardiner with a period of 5.29 seconds.
Ron Lee saw it on December 9 with a period of about 5 seconds, although
he was not able to make an accurate timing.  
Latest elements :
Cosmos 2181 r    7.4  2.4  0.0  5.5 v
1 21903U 92012  B 96339.10166499  .00000547  00000-0  58340-3 0  7802
2 21903  82.9358 335.1233 0043042 100.0552 260.5440 13.73615427237561

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21938 = 92- 20 B 
92- 20 B 96-12-03 00:50.5   RGL   194.0 2.0   5 38.8   FF
92- 20 B 96-12-06 00:30.2   RGL   188.1 2.0   5 37.6   FF, 4->8
Is this rocket accelerating or not ??
Latest elements : 
Cosmos 2184 r    7.4  2.4  0.0  5.5 v
1 21938U 92020  B 96340.04516261  .00001180  00000-0  12462-2 0  8056
2 21938  82.9277 165.0299 0029577 225.1224 134.7530 13.74407608232785
This object is also visible for Northern latitude observers although
in the morning hours.

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21984 = 92- 30 J 
Cosmos 2187 r    7.4  2.4  0.0  5.5 v
1 21984U 92030  J 96340.11819330 -.00000547  00000-0 -50273-2 0  6642
2 21984  74.0041 353.1721 0123167  81.0729 280.4193 12.22105777201106

Evolution of the Flash Period of this rocket : 
92- 30 J 96-12-02 02:19      RGL 122.5 0.8  10 12.25  FF, mag 4->inv
92- 30 J 96-12-03 01:53.8    RGL 124.2 1.0  10 12.42  FF, mag 5->inv
92- 30 J 96-12-03 03:52.0    RGL 122.9 1.0  10 12.29  FF, mag 6->inv
92- 30 J 96-12-04 01:28.0    RGL 249.3 1.0  20 12.47  FF, mag 5->9
92- 30 J 96-12-05 01:04.9    RGL 263.1 1.0  21 12.53  FF, mag 4->8.5
92- 30 J 96-12-08 01:47.5    RGL 192.3 1.0  15 12.82  FF, mag 4->8
92- 30 J 96-12-09 01:21.9    RGL 319.9 1.0  25 12.80  FF, mag 4->8
Thanks  to the daily observations of Ron Lee, we can conclude that
the acceleration is already finished and the period is going up again.

Happy observing !

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       Kurt Jonckheere (kjonckheere@unicall.be)  51.2 N  2.9 E   
  Latest accelerations : http://uc2.unicall.be/kjonckheere/index.htm 
    observations collector for the Belgian Working Group Satellites: 
Send your observations of flashing satellites, preferrably in the correct
     PPAS format to obs@physics.oxford.ac.uk or obs@physics.ox.ac.uk
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