new geosync flasher

From: Rainer Kracht (r.kracht@sh-home.de)
Date: Thu Mar 02 2000 - 05:48:52 PST

  • Next message: Leo Barhorst: "Obs 28 feb"

    New Geosync Flasher
    
    This object was found by Daniel Karcher on 27 Feb 2000.
    He made five CCD obs from 18:24:01 to 18:39:26 UTC.
    He wrote: mag 9.5 ,phase 82 deg (first obs) ... in absence
              of visually obs, ist not possible to say if this
              geo is varying, or flashing
              longitude : about 8 deg EAST
    
    Igor Lissov wrote:
    
    --------------------------------------------------------------------
    Date forwarded:   Sun, 14 Mar 1999 10:10:29 -0800 (PST)
    Send reply to:    <icosmos@dol.ru>
    From:             "Igor Lissov" <icosmos@dol.ru>
    To:               <SeeSat-L@blackadder.lmsal.com>
    Subject:          Re: 98001 found
    Date sent:        Sun, 14 Mar 1999 21:04:29 +0300
    Forwarded by:     SeeSat-L@blackadder.lmsal.com
    
    Hi,
    
    On 25 Feb 1999, Mike McCants wrote:
    > 
    > Hi Rob,
    
    [snip]
    
    > >This information should be sufficient for one of our experts
    > >to refine the orbit.
    > 
    > Yes, but since none of them are currently available, I'll give it a try:
    > 
    > DSP
    > 1 98001U          99055.13914366  .00000000  00000-0  00000+0 0    01
    > 2 98001   4.3200  58.4266 0012000  85.6064 274.3935  1.00274000    09
    
    [snip] 
    
    The bird is over approx. 145 deg W. According to the list of active DSPs
    I've posted Feb.13, this one is DSP F14 (USA-39, 1989-046A, 20066) 
    launched on 14 Jun 1989 by Titan 402/IUS. Until mid-1996, it was
    located at approx. 165 deg W.
    
    Other known/active DSPs are at approximately:
    
    DSP F15   USA 65    1990-095A   20929    37W
    DSP F16   USA 75    1991-080B   21805    8E
    DSP F17   USA 107   1994-084A   23435   103E
    DSP F18   USA 130   1997-008A   24737    69E
    
    Igor Lissov
    ------------------------------------------------------------------------
    
    So, Daniel's object seems to be DSP F16.
    
    I found it March 01 18:10 UTC flashing to mag 7, FP 2.47 seconds
    invisible between flashes with my 8" SCT.
    
    The flash period is close to Mike's 2.51 seconds for DSP 14 (98001),
    confirming that Daniel's object is another DSP and according to
    Igor's table this is DSP 16.
    
    At 18:17 UTC DSP 16 was covered by clouds (still flashing).
    At 22:21 UTC I found it again, now mag 11 steady.
    Around 22:55 UTC several very bright flashes were seen (mag 6?)
    Last observed at 23:03 UTC, again mag 11 steady.
    
    Elset from six obs, made with Elcor and Fitelem:
    
        2
       47.8033   -7.3417      705.    Daniel Karcher
       53.7695   -9.6626       30.    Rainer Kracht
    DSP 16 (USA 75)
    1 21805U 91080B   00060.00000000  .00000000  00000-0  00000+0 0    02
    2 21805   3.9715  73.3993 0004867 168.4309 284.1922  1.00270562    04
      1 00  2 27 18 24  1.0   5 20.9  -6.56 1950 1.0  mag 9.5
      1 00  2 27 18 39 26.0   5 36.3  -6.26 1950 1.0  
      2 00  3  1 18 10  4.8   5 20.3  -7.08 2000 0.5  flashing to mag 7
      2 00  3  1 18 18 58.0   5 29.2  -6.93 2000 0.1  flashing to mag 7
      2 00  3  1 22 43 37.5   9 54.3  -3.44 2000 0.5  mag 11 S
      2 00  3  1 23  3  7.0  10 13.9  -3.35 2000 1.0  mag 11 S
      0  0
    
     1  58 18 24  1.0    .0  5 20.9 -6.56   5 20.9 -6.56   .00   .00   .00   7
     1  58 18 39 26.0    .0  5 36.3 -6.25   5 36.3 -6.26   .00  -.01   .01  11
     2  61 18 10  4.8  -2.1  5 20.3 -7.08   5 20.3 -7.08   .00   .00   .00   6
     2  61 18 18 58.0  -3.0  5 29.2 -6.92   5 29.2 -6.93   .00  -.01   .01   9
     2  61 22 43 37.5    .0  9 54.3 -3.43   9 54.3 -3.44   .00  -.01   .01  75
     2  61 23  3  7.0    .0 10 13.9 -3.35  10 13.9 -3.35   .00   .00   .00  80
    
     Rainer
    
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    This archive was generated by hypermail 2b29 : Thu Mar 02 2000 - 04:50:23 PST