Obs 971213

Leo Barhorst (leobarhorst@wxs.nl)
Sat, 13 Dec 1997 16:21:50 +0100

This morning clouds finally broke again. In between some cloudfields and 
high cirrusclouds i could observe the following satellites:

78- 42 A 97-12-13 05:46:29   LB   74.4 0.2   3 24.8   'FFF-'F, mag
4->inv
Timed flashes: 5.80 5.51 13.53 5.52 19.32 5.95 5.07 13.67
When splitting the 19 sec in a 5.7 and 13.6 sec part it becomes clear
that
the reported period is made up from 3 sub-periods:
5.80+5.52+5.95    / 3 =  5.76 sec
5.51+5.72+5.07    / 3 =  5.43
13.53+13.60+13.67 / 3 = 13.60
                       ------
so the real period is   24.79 sec

83- 22 A 97-12-13 05:34:43   LB   81.4 0.5   6 13.6   AA, mag 4->6
86- 19BB 97-12-13 05:26:00   LB                       var, mag 6->7
not possible to measure a period

86- 19BJ 97-12-13 05:58:25   LB   51.6 0.2  20  2.58  FF, mag 4->inv
Nice flasher

86- 61 A 97-12-13 05:29:39   LB   39.1 0.2  20  1.95  'FFF-'F, mag
4->inv
90- 10 A 97-12-13 06:07      LB                       almost S, mag 5
92-  8 B 97-12-13 05:15:36   LB  147.6 0.2  16  9.23  FF, mag 4->inv
Timed flashes ( not all flashes seen were timed) :
30.63 8.88 13.39 8.17 10.52 9.62 29.19 8.93 9.76 8.98 9.57
No conclusive period can be determinated

94- 45 B 97-12-13 05:52      LB                       almost S, mag 4
94- 61 B 97-12-13 06:28      LB                       S, mag 3
96- 69 A 97-12-13 05:01      LB                       S, mag 4

This observation session had a spectacular end when 97- 51 E showed a 
mag -5 flare for about 5 seconds. Looking at it with 7x35 binoculars
almost blinded me! The flare was at 06:31:24,2 UT.

-- 
Greetings and clear skies
Leo Barhorst       Alkmaar    The Netherlands
52.65 North        4.47 East  3 m ASL
Every day I wonder about what I see in the sky