Some High Prioriry Objects of the BWGS
Kurt Jonckheere (kjonckheere@unicall.be)
Sun, 29 Dec 1996 15:51:01 +0100
The following list contains a selection some high priority objects of the
Working Group Satellites. Most of them are rockets that had a sudden
acceleration of the flashing period or a sudden change in orbital
elements (or both). You can find additional graphs with the evolution of
the flash period and the Semi Major Axis on my web pages :
http://uc2.unicall.be/kjonckheere/index.htm
The objects in this list need to be observed as regular as possible.
Observations are very much appreciated !
85- 41 B = 15752
96-04-28 LB 60 MM, mag 5->inv
96-04-28 KJ 85
96-05-05 BD 84.1 AA, 6.5->inv
96-09-16 LB 16.2 AA, mag 5->7
86-100 B = 17240
The Semi Major Axis decreased a bit faster between Dec 20 and 25.
Leo saw it accelerating very suddenly on Dec 26 ! Other observers
are also allowed...
96-12-15 LB 150 lp >150, mag 5->inv
96-12-20 LB 49.2 MM, mag 5->inv
96-12-23 LB 73 MM, mag 5->inv
96-12-26 LB 95.0 AA, mag 5->7
96-12-26 LB 3.0 AA, mag 5->7
96-12-27 LB 5.0 AA, mag 6->inv
89- 50 B = 20104
95-04-02 BD 76.4 5.5-8.0
95-05-22 PW Steady
95-10-05 MM S, 8.5
96-09-07 LB 1.48 FF, mag 7->inv
90- 4 B = 20433
There is no recent change in orbital elements. This object is
sometimes flashing with small amplitude meaning that it can look
Steady during some passages. So maybe there is no real accelaration.
96-09-01 LB 10.2 AA, mag 4->inv
96-09-07 LB 62.9 AA, mag 4->inv
96-10-17 LB 17.6 AA, mag 4->inv
96-12-21 LB almost S, mag 5
96-12-22 LB almost S, mag 4
96-12-24 LB 12.0 AA, mag 4->inv
96-12-26 LB 12.4 AA, mag 4->5
20433
1 20433U 90004B 96362.11016914 +.00000051 +00000-0 +27946-4 0 01596
2 20433 074.0321 013.6416 0043845 166.0694 194.1680 14.32815865362898
90- 83 B = 20805
As you can see on the graph, the orbital elements were behaving normally
until May 96, when a small decrease happened. During the last months,
there were a lot of changes in the Semi Major Axis. After almost two
years this rocket was finally observed flashing again by KJ.
Of course more observations are needed !
95-01-12 LB 132 MM, mag 4->7
95-03-21 RO I, mag 5->9
96-12-28 KJ 35 ssm
20805
1 20805U 90083B 96362.59774290 -.00000060 00000-0 -78440-4 0 495
2 20805 82.9410 208.0271 0031905 350.1105 9.9428 13.75197578315604
92- 8 B = 21876
Jump in Mean Motion in November, confirmed by Kurt J and Willy V.
96-10-25 LB 18.6 FF, mag 4->inv
96-11-06 KJ 19.4 FF, 4->inv, later
96-11-06 WV 19.9
96-11-15 KJ 12.79
96-11-15 WV 12.79
21876
1 21876U 92008B 96362.19221473 +.00000252 +00000-0 +24922-3 0 08040
2 21876 082.9253 270.6589 0036494 014.9199 345.3028 13.74530487243704
92- 20 B = 21938
Slow decrease of period ? Semi Major Axis is going down fast.
96-11-21 KD 47
96-12-03 RGL 38.8 FF
96-12-06 RGL 37.6 FF, 4->8
96-12-12 RGL 35.55 FF, mag 6->inv
96-12-21 LB 33.8 AA, mag 4->7
96-12-22 LB 32.9 AA, mag 5->inv
96-12-22 LB 33.5 AA, mag 4->inv
21938
1 21938U 92020B 96362.24877128 +.00000050 +00000-0 +36133-4 0 08003
2 21938 082.9305 148.5713 0032194 159.4142 200.8311 13.74438754235838
92- 30 J = 21984
Thanks to all for following this object so regular last month.
We still need more observations to find out if it is again accelerating
or not.
96-12-23 TC 13.31 FF, mag +6.5
96-12-24 LB 13.56 FF, mag 4->8
96-12-25 LB 13.31 AA, mag 4->inv
96-12-26 LB 13.06 AA, mag 4->inv
96-12-28 LB 13.36 AA, mag 4->inv
96-12-28 KJ 13.27 syn effect, dra
96-12-28 KJ 13.37 syn effect
96-12-28 LB 13.27 FF, mag 4->inv
21984
1 21984U 92030J 96361.97291204 -.00000003 +00000-0 +10000-3 0 06772
2 21984 073.9787 325.5403 0124015 048.8930 312.2707 12.22096526203770
92- 76 B = 22220
This Zenit rocket had a change in orbital elements in August 96.
It is still difficult to make accurate measurements of the period.
95-10-08 MVP S, mag +4
95-10-09 MVP S, mag +5
96-09-06 LB 120 long P>120, mag 3-
96-09-17 LB S, mag 6
96-12-20 LB slowly var,4->4.5,
96-12-22 LB slowly var, mag 4-
96-12-25 LB 56.3 MM, mag 4->inv N?
96-12-26 LB 33.3 MM, mag 4->inv
93- 36 B = 22676
The Semi Major Axis started to decrease between Dec 17 and 21. More
observations are needed urgently to see if the period is really going
down !
96-08-26 LB 48.2 AA, mag 4->inv
96-10-13 LB 120 P>120; slowly var
96-12-21 LB 53.1 AA, mag 4->inv
96-12-23 LB 48 MM, mag 4->inv
22676
1 22676U 93036B 96361.94331981 +.00001513 +00000-0 +58460-3 0 06198
2 22676 074.0354 149.9317 0018763 229.3607 130.5911 14.30941512184470
Happy observing,
Kurt J
-------------------------------------------------------------------------
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 ppas@cds.plasma.mpe-garching.mpg.de
-------------------------------------------------------------------------