Raduga 27 is still accelerating

jason.hatton@wanadoo.fr
Sat, 05 Jun 99 15:34:09 PDT

Hi everyone,

		I had another nice observation of the flashing Geosynchronous satellite
Raduga 27 (91-014A/21132)last night. As in previous observations from my
observing site the flashes were very bright (at least mag +6). The flash
period is still accelerating is currently 79.8s, (compared to 89.3s on the
9th May 1999). Here is a summary of my observations (in PPAS format) for
the last month;

91- 14 A 99-05-09 21:02:17.5 JPH1785.6 0.1  20 89.28  A'A' mag+5->inv vm
91- 14 A 99-05-19 21:14:38.6 JPH1280.5 0.2  15 85.37  A'A' mag+6->inv
91- 14 A 99-05-23 21:40      JPH1342.4 0.2  16 83.90  A'A' mag+6->inv
91- 14 A 99-06-04 20:44:42   JPH 957.5 0.2  12 79.79  A'A' mag+6->inv

This Geosat is currently well placed in the southeast for European
observers (& probably just visible from the eastern United States), very
slowly drifting westwards. Since this is a bright accelerating flasher it
will be interesting to see if the flash period shows cyclic accelerations &
decelerations as Gorizont 23 does (Gorizont 23 is currently well placed for
American observers, as detailed in Kurt Jonckherre's post yesterday). 

Here is a recent elset for Raduga 27 from the NASA-OIG web site;

RADUGA 27
1 21132U 91014A   99152.38554074  .00000150  00000-0  00000+0 0  2411
2 21132   5.1470  67.7112 0003149 202.9186 156.8088  1.00196508 30264

Best wishes & clear skies,

Jason

Jason P Hatton
43.667N, 7.223E,30M