Obs 970524-25

Leo Barhorst (leobarhorst@pi.net)
Sun, 25 May 1997 14:55:26 +0200

Again a clear night, although at 03.00 UT the moon showed up from behind 
houses and trees and there was some haze.

90- 4 B is probably accelerating!


69-  9 A 97-05-24 23:24:38   LB  123.2 0.2  22  5.60  FF, mag 2->inv
Probably half period.
81-  8 B 97-05-25 00:18      LB                       almost S, mag 3
Picked this up as an UNID; id-ed with Skymap and Alldat.tle
85- 94 G 97-05-24 23:05:19   LB  121.5 0.5   4 30.4   AA, 4->inv
Slowly going up
87- 11 A 97-05-24 22:28:02   LB   50.2 0.2  10  5.02  FF, mag 3->inv
Going up slowly
87- 27 B 97-05-25 00:28:15   LB   87.2 1.0   1 87     MM, mag 3->5
Observed S or with long period
87- 60 A 97-05-24 23:20:24   LB   69.8 0.5  12  5.82  AA, mag 4->inv
87- 60 A 97-05-25 01:03:37   LB   58.3 0.5  10  5.83  AA, mag 4->inv
Nice flasher. Showed some irregular behavior at the end of first obs
88- 20 A 97-05-25 00:38:24   LB   85.1 0.2   6 14.19  FF, 3->inv, 1 fl mag -1
The flash to mag -1 lasted about 2 seconds
89- 80 C 97-05-24 23:33      LB                       S, mag 7
Remains steady
90-  4 B 97-05-24 23:48:48   LB   46.0 0.5   4 11.5   AA, mag 5->inv
To be watched closely. Is it accelerating? Was 14 sec 970501 and 11.9 yesterday!
90- 81 K 97-05-24 21:07:37   LB  102.2 0.2   8 12.77  Ff, mag 3(5)->inv
No distinct flashpattern evolution
90-111 B 97-05-24 23:12:03   LB   60.5 1.0   2 30.3   MM, mag 4->inv
Dtm, very flat maximum
91- 59 B 97-05-24 23:00:12   LB   82.5 0.5   4 20.6   AA, 6->inv, 1 fl mag 3
Periods measured: 22.59 20.09 18.57 and 21.20 seconds.
91- 81 B 97-05-25 00:59:03   LB   98.8 1.0   1 99     MM, mag 3->inv
S or long period observed.
92- 12 B 97-05-24 22:40:54   LB   59.2 0.2  20  2.96  FF, mag 6->inv5
Half period?
92- 20 B 97-05-24 22:13:45   LB  168.9 0.5   4 42.2   AA, mag 4->inv
Going up slowly
92- 23 A 97-05-25 00:09:09   LB   47.9 0.2  40  1.20  FF, mag 4->5, dtm
Going up very slowly. Was dtm due to small amplitude.
92- 30 J 97-05-25 01:15:30   LB   79.6 0.5   4 19.9   AA, mag 3->inv
Going up; was very bright opposite the sun
92- 73 B 97-05-24 22:20:44   LB   66.6 0.5   4 16.7   AA, mag 6->inv, Irr
Irregular flash pattern: 13.12 19.31 18.04 16.16 seconds
92- 73 B 97-05-25 00:05:38   LB   55.2 0.5   2 27.6   AA, mag 4->inv
Was easy measurable.
92- 83 B 97-05-24 22:52      LB                       var, mag 4->7
Thanks to the TLE posted yesterday to SeeSat-L I was able to observe USA 86.
At 22:52:41.1 it was at RA=12h57m d=+56; Epoch 2000; between Epsilon and 78 UMA.
At 22:54:01.4 it was at RA=09h20m d=+69; Epoch 2000; between 24 and Sigma2 UMA.
93- 20 B 97-05-24 23:56:58   LB   17.8 0.5   1 17.8   AA, mag 4->inv
93- 20 B 97-05-25 01:45:14   LB   92.6 0.5   6 15.4   AA, mag 4->inv
The last obs was irregular; timed every 2nd flash: 27.86 28.35 and 36.35 sec.
93- 36 B 97-05-25 00:01:58   LB   85.7 0.5   2 42.9   AA, mag 3->inv
To be watched, could be going down
93- 59 B 97-05-24 22:31      LB                       S, mag 2
Bright sat
94- 77 B 97-05-25 01:34:34   LB  107.1 1.0   1 107    MM, mag 3->inv
Long period now
94- 85 B 97-05-24 21:38:21   LB   49.7 0.5  10  4.97  AA, mag 5->inv
94- 85 B 97-05-24 21:45:25   LB   46.2 0.5  14  3.30  AA, mag 6->inv
94- 85 B 97-05-24 23:54:25   LB   43.3 0.5  10  4.33  AA, mag 5->7
Second obs probably wrong N. 
To be watched; seems to be going down.
95- 12 B 97-05-24 21:35:13   LB  134.0 0.5   2 67.0   AA, mag 4->7
Decresing long period?
95- 17 B 97-05-25 00:15      LB                       S, mag 5
Orbcom 2 satellite
95- 32 B 97-05-24 22:37:56   LB   68.3 0.5   1 68.3   AA, mag 3->inv, sm, mag 5
Going up
95- 72 C 97-05-24 21:24      LB                       S, mag 5
Remains S
96- 17 B 97-05-24 21:48:52   LB   52.9 0.5   2 26.4   AA, mag 4->7
Difficult; sometimes (almost) S.
97- 17 B 97-05-24 21:03:04   LB  109.7 0.2  50  2.194 FF, mag 3->inv
97- 17 B 97-05-24 22:48:08   LB  159.2 0.2  72  2.211 FF, mag 4->inv
Going up slowly

-- 
Greetings and clear skies

Leo Barhorst		Alkmaar			The Netherlands
52.65 North		4.767 East		1 m ASL
Member of Seesat-L
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Every day I wonder about the things I see in the (night)sky