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