Two High-Priority Objects

jamesv@softcom.net
Fri, 09 May 1997 22:54:11 -0700

Kurt Jonckheere wrote:

>Observing Program of the BWGS
>-----------------------------
>
>The Belgian Working Group Satellites has been active in collecting flash
>period measurements since 1987. Our priority list contains over 300
>satellites. 
>
>Top-priority objects :
>
>87- 49 B !     18096/C1 Kosmos 1850: accelerating again !

I observed Cos 1850 r with 10x50's on May 10 0404 UT (ending).  Here are my
timings:

15.16
12.15
15.08
11.14
14.80
12.68
15.13
11.23
15.21
11.64
 5.72
 8.19
11.58
13.36
12.39
13.81

Here's my tentative interpretation: the 5.72 and 8.19 sec periods are
'synodic anomalies' which have been studied by Bart De Pontieu last year 

( see http://www.rzg.mpg.de/~bdp/flash/91/chapter2_12.html )

Also note the asymmetrical flash period of about 11-12 sec and 14-15
seconds.  Does the asymmetrical flash period denote a half-period?

Should I report this as: 14 flashes at 13.2 sec (throwing out the
anomalies) or 7 flashes at 26.5 sec (again throwing out the anomalies)?


> 93- 70 B !     22889/C1 Kosmos 2266: MMjump, also accelerated ?

This one was much more straightforward.  Three flashes timed at 47 seconds
each.  Object has a very long minima and a short but bright maxima.

93- 70 B 97-05-10 05:18      JEV 141.9 1.0   3 47.3   mag 4->8

_______________________________________________________
Jim Varney        jamesv@softcom.net     Sacramento, CA
           121^ 23' 54" W,  38^ 27' 28" N