ACCELERATION REPORT 9 April 96

Kurt Jonckheere (kjonckheere@unicall.be)
Tue, 9 Apr 1996 18:24:51 +0000

The following objects had a jump in Mean Motion and * MIGHT * accelerate:
14760 = 84- 19 B   88-  1 B = 18749(added today!)
19922 = 89- 28 B   91- 81 B = 21797
-----------------------------------

The following objects had a jump in Mean Motion and * HAVE * accelerated,
they are flashing nicely again:
87- 27 B = 17590  
==========================================================================

87- 27 B = 17590 : Seen flashing by Wim Holwerda
17590
1 17590U 87027B   96099.45491542 -.00000055  00000-0 -37417-5 0  5101
2 17590  70.9995 237.5001 0006482 233.5833 126.4687 14.15835522468231

------
88-  1 B = 18749
This is an object from the group of Cosmos rockets with an inclination
of 82.5 degrees.  The PPAS shows that most of these satellites were S,
in contrast with other groups of Cosmos rockets, for instance with
74 degrees inclination.
One of the exceptions in this group is 91- 42 B that was flashing very
fast at the beginning.

No Flash-observations of 88-  1 B are in our database.  Compared with 
3 days ago, the Mean Motion changed suddenly.  So maybe there is yet 
a fuel-leak and it will start flashing now?  Let's give it a try...
18749
1 18749U 88001B   96099.12333203 -.00000412  00000-0 -60242-4 0  4707
2 18749  82.5200 332.1333 0020228 164.3325 195.8099 14.77960985444902

-------
No observations yet from: 
14760 = 84- 19 B, 19922 = 89- 28 B, 21797 = 91- 81 B
[Thanks to Mike and Walter for some missing elements and Bart for 
the hints]
21797
1 21797U 91081B   96098.90038570 +.00000583 +00000-0 +57905-3 0 07044
2 21797 082.9546 045.0181 0038106 154.5194 205.7851 13.76324166219232
14760
1 14760U 84019B   96098.89052036 +.00000066 +00000-0 +33810-4 0 06955
2 14760 074.0409 250.6026 0029649 211.0623 148.8775 14.32640350633651
19922
1 19922U 89028B   96099.84358614 +.00000056 +00000-0 +42286-4 0 02325
2 19922 082.9614 044.2212 0035814 314.4365 045.3857 13.76409443352246

All these objects need to be observed as soon as possible.  The more
people try to have a look on them, the more information we can collect.
Only some accelerations were observed very well in the past.  
We are definitely in need of more observers to be able to examine 
the relations between evolution of the flash period 
(decreasing, becoming steady for some days (?) and increasing again) 
and the changes in orbital elements.


As a lot of you have already predicted and observed Shuttle, Mir, ...
a small step further (knowledge of the constellations, 
binocular and stopwatch) can lead to some other but also very 
funny observing that are these rotating satellites.
It is very thrilling to see a satellite flashing, knowing that it was
Steady the past months or years.

You can always look at the web-pages for more information, or contact
one of us.

Happy observing!,


Kurt Jonckheere (kjonckheere@unicall.be)