ACCELERATION REPORT 16 Mar 96 : 92- 8 B

Kurt Jonckheere (kjonckheere@unicall.be)
Sat, 16 Mar 1996 21:14:53 +0000

THE FOLLOWING OBJECTS HAD A JUMP IN MEAN MOTION AND MIGHT ACCELERATE
87- 27 B = 17590
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THE FOLLOWING OBJECTS HAD A JUMP IN MEAN MOTION AND ARE ACCELERATING
92-  8 B = 21876
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WARN: 17590 = 87- 27 B
ep: 12806.850643        mm 14.157002    mmdot 3.2e-07
ep: 12814.62299         mm 14.156949    mmdot -3.28e-06
ep: 12818.791805        mm 14.156923    mmdot -3.04e-06
ep: 12829.461119        mm 14.157006    mmdot 3e-06       [ 1 Mar 96]
ep: 12836.585901        mm 14.158347    mmdot -5.8e-07    [ 8 Mar 96]
ep: 12839.62389         mm 14.158348    mmdot 8.6e-07     [11 Mar 96]
1 17590U 87027  B 96 71.12388997  .00000086  00000-0  67841-4 0  5019
2 17590  71.0036 297.0725 0006718 265.3675  94.6678 14.15834800464221

Because the first derivative of the Mean Motion was already rather low,
this objects slipped through my visual checking of the list of objects
with changes in Mean Motion.  If I've had looked better at the Mean 
Motion itself, I should have know better... Thanks to Russel for paying
our attention to this object.  
Between 1 and 8 Mar the semi major axis suddenly lowered with about 500
metres!
It seems that the jump in Mean Motion has already stopped.  
So as already mentioned by Tristan, this object is very likely to be
accelerating!

----------------
92-  8 B = 21876
This object had a period of about 19 seconds at the end of 1995.
In January 1996 it had a jump in Mean Motion but wasn't visible.
Last week it became visible again.
Jan Vansteelandt just reported me an observation of last Thursday:
92-  8 B 96-03-14 21:06      JVS 186.8 0.8  20  9.34

So this object has certainly accelerated.  Is it still going down??

21876
1 21876U 92008B   96075.15986171 +.00000158 +00000-0 +15031-3 0 07292
2 21876 082.9243 123.5993 0036607 088.9027 271.6323 13.74472077204273

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92- 93 B showed no unusual change in orbital elements.

--------
93- 36 B : flashing period is going up again.

No other unusual behaviour was found with the latest file from Ted Molczan.
[Thanks Ted for your weekly element-file]

Happy observing,

Kurt Jonckheere (kjonckheere@unicall.be)