geosat obs

Rainer Kracht (r.kracht@elmshorn.netsurf.de)
Thu, 21 Oct 1999 14:51:52 +2

Observations with 4" telescope from 9.6626 east, 53.7695 north
geostationary belt at delta = -7.6 to -7.5 (2000.0)


1999 Oct 12   Sun delta -7.49
              mag limit 10.0
              obs at RA 0h14.5m  20 minutes before shadow ingress
21:56 UTC  two satellites from the Hot Bird cluster: mag 9.0 and 9.5
           there are five Hot Birds at lambda = +13 deg


1999 Oct 15   Sun delta -8.60 to -8.63
              mag limit 10.1
              obs at RA 1h13.9m  11 to 2 minutes before shadow ingress
21:24.5 UTC  Turksat 1B  (94-49B, +31.3): mag 9
21:27.9      Arabsat 2B  (96-63A, +30.5): mag 9.5
             DFS 2       (90-63B, +28.5): not seen
             Astra 2A    (98-50A, +28.2): not seen
21:39.7      Sirius 3    (98-56B, +27.9): mag 9.5
21:47.6      Arabsat 3A  (99- 9A, +26.0): mag 9.5
21:48.1      Arabsat 2A  (96-40A, +26.0): mag 9.5
             DFS 3       (92-66A, +23.6): not seen
22:09.5      Afristar    (98-63A, +21.0): mag 8
22:17.5      six satellites from the Astra cluster (+19.25)
             two sats mag 6, four sats mag 8
             a magnificent sight with 10x50 binoculars!
22:30.0      Italsat 2   (96-44A, +16.4): mag 8.5
22:31.4      Eutelsat W2 (98-56A, +16.0): mag 9.5
22:44.5      four satellites from the Hot Bird cluster (+13.0)
             two sats mag 8, two sats mag 9
             Eutelsat 2F-4 (92-41B, +10.0): not seen
23:10.8      Eutelsat W3 (99-18A, + 7.0): mag 9.5


1999 Oct 16   Sun delta -8.99
              mag limit 10.6
22:15   UTC  brightest Astra sat mag 6.5 (10x50)
22:44.0      Italsat 1   (91- 3A, +13.1): mag 9
             RA 1h18.0m, Decl -9.63 deg


1999 Oct 17  Sun delta -9.36 to -9.37
              mag limit 10.3
22:15   UTC  brightest Astra sat mag 7.0 (10x50)
             Italsat 1   (91- 3A, +13.1)
22:40.1      RA 1h18.0m, Decl -9.63 deg  mag 9.8
22:44.7         1 22.7        -9.58          9.5
22:53.4         1 31.4        -9.54          8.8
23:09.5         1 47.5        -9.49          8.0
23:22.9         2 01.0        -9.40          8.4
23:43.8         2 21.9        -9.31         10.1

Italsat 1 passed south of the Earth's shadow
closest approach was about 22:53

 Rainer

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