Obs september 10, 11, 12

Barhorst L.J.C. (L.J.C.Barhorst@arcadis.nl)
Wed, 15 Sep 1999 09:22:49 +0200

It seems that this message didn't get through to the seesat-l list.
Sorry if you recieve it more than once.
It was send twice on the 13th and now on the 15th.
Leo


A nice septembersummer gave clear nights in the weekend.
It was possible to do some nice observing.

Sunday evening before clouds came in 99- 34 B made a beautiful
pass; 50 minutes later I could observe 99- 39 B between clouds.

76- 67 B 99-09-11 03:05:35   LB   48.0 0.5   4 12.0   AA, 6->7
Slow variations
78- 18 B 99-09-10 20:59:28   LB   12.6 0.2   4  3.2   FF, 6->inv
Sometimes dtm; just a few flashes visible
81- 59 A 99-09-10 20:50:23   LB   54.2 0.2  10  5.42  'Ffff'F, 4(5)->inv
81- 59 A 99-09-11 20:35:05   LB   54.0 0.2  40  1.35  FfffF, 3(5)->inv
The first obs was on the bright flashes, every fourth; in the second obs
every flash was measured
87- 11 A 99-09-11 02:10:18   LB   64.8 0.5  10  6.48  AA, 5->7
87- 11 A 99-09-11 20:24:48   LB   65.0 0.5   4 16.2   AA, 4->6
The obs was difficult; normally the period is around 6.5 sec
87- 49 B 99-09-11 02:57:32   LB   95.2 0.5   4 23.8   AA, 4->6
87- 74 G 99-09-10 20:46:19   LB   50.1 0.5   4 12.5   AA, 6->inv
Both sats seems to have accelerated; to be checked
90-111 B 99-09-11 19:35:04   LB   90.7 1.0   2 45.3   MM, 4->7
Slowly going up
92- 12 B 99-09-10 20:26:50   LB   64.8 0.5   4 16.2   AA, 5->inv
Slowly going up
92- 20 B 99-09-10 20:30      LB                       almost S, 4
Still (almost) S
93-  8 B 99-09-11 02:21:54   LB  141.8 0.5   4 35.5   AA, 4->inv
After two almost S obs; this one fits the regression line
93- 36 B 99-09-10 20:17      LB                       var, 5->6
Stays dtm
93- 61 A 99-09-10 20:53:36   LB   90.5 0.2  11  8.23  FF, 3->inv, sm, 4
In july 16 sec; in august 4 sec and now 8 sec; looks like double and
half periods
94- 77 B 99-09-10 20:24      LB                       S, 6
Remains (almost) S
94- 85 B 99-09-10 21:30:59   LB  116.2 0.5   4 29.1   AA, 6->inv
Keeps on going up and down a bit; but generally going up
95-  2 D 99-09-11 03:02      LB                       almost S, 5
Remains (almost) S
96-  4 B 99-09-10 20:20:48   LB   63.5 0.5   6 10.6   AA, 5->inv
Going up slowly
96- 71 B 99-09-11 02:28:22   LB   62.6 0.5   2 31.3   AA, 6->inv
To be watched; seems to accelerate slowly
97- 28 C 99-09-11 02:46:24   LB   78.8 1.0   2 39.4   MM, 6->inv
97- 28 C 99-09-11 19:48:22   LB  155.2 1.0   3 51.7   MM, 6->7
Dtm
97- 77 B 99-09-11 20:09      LB                       S, 6
98-  7 D 99-09-10 21:35:36   LB  123.8 0.5   4 31.0   MM, 5->inv
Was measurable this obs
98- 43 G 99-09-10 21:22:31   LB  168.6 2.0   3 56     MM, 3->inv
Due to the long period dtm
98- 76 B 99-09-11 02:03:07   LB  117.4 0.5  13  9.03  AA, 5->inv
Going up slowly
99- 19 E 99-09-11 19:23:01   LB   75.7 0.2  10  7.57  AA, 3->inv
Going up normally
99- 22 A 99-09-11 19:16      LB                       var, 7->8
Not measurable
99- 22 C 99-09-11 19:43:33   LB   12.7 0.2  40  0.32  FF, 4->4.5, dtm
Was very dtm; brightness change just faintly visible
99- 25 C 99-09-11 19:39:37   LB  120.2 0.2  30  4.01  AA, 4->inv
Going up slowly
99- 34 B 99-09-12 19:02:06   LB  105.7 0.5  10 10.57  AA, 3->inv
Going up slowly
99- 39 B 99-09-10 20:37:20   LB  292.4 0.2 400  0.731 FF, 3->inv
99- 39 B 99-09-11 19:26:23   LB  117.6 0.2 172  0.684 FF, 3->inv
99- 39 B 99-09-12 21:52:32   LB  153.2 0.2 224  0.684 FF, 3->inv
First obs was along almost the whole pass; period influenced by
the synodic effect
99- 43 E 99-09-11 19:53      LB                       S, 5.5
Remains S

Greetings and clear, dark skies
Leo Barhorst, Medemblik                768 obs in 1999
52.767 N   5.09 E   2 m ASL