Re: Unknown Object

Bart De Pontieu (BDP@MPE.MPE-GARCHING.MPG.DE)
Thu, 20 Jul 1995 14:58:43 +0100 (CET)

I'm forwarding the following message for Rainer Kracht. The list-software
currently refuses to forward Rainers messages for some obscure reason which
I'm trying to find out.

  -- Bart
  
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> But now he ask me for another problem:  
> On april 10 1991, he had made 2 photographs at about 10 min.  
> of interval. On each one, one can see a line made by "a moving 
> object". What could it be?  
> Here are the coordinates of that object:  
>          UT   RA 1950  DEC 1950 
> A         2005 09h21.8m +24d18m 
> B         2010 09h24.5m +24d23m 
> C         2014 09h26.7m +24d27m 
> D         2019 09h29.4m +24d31m 
> One can deduct that the speed (on the stars) is 6.8 deg./hour 
> Could it be a satellite at 65,180 Km height ?  
> If necessary, I can ask him for the coordinates of his obs.place.  
  
 Alphonse told me, that Gerhart Klaus lives in Grenchen, +47.22 deg lat./ 
 +7.40 deg east long. There are many possible geocentric orbits for this 
 object. Among these are: 
  
UNK910410     20918 x 50658 km 
1 99000U          91100.84000000  .00000000  00000-0  00000+0 0    03 
2 99000  27.4600  66.6623 3526555 246.1080 201.4449  1.00270000    04 
UNK910410      1688 x 37381 km 
1 99000U          91100.84000000  .00000000  00000-0  00000+0 0    03 
2 99000  28.0703  65.4579 6887301 258.7968 178.6384  2.08169358    03 
UNK910410       584 x 36530 km 
1 99000U          91100.84000000  .00000000  00000-0  00000+0 0    03 
2 99000  28.3701  67.2645 7208000 250.8417 205.6037  2.20535600    01 
UNK910410       100 x 37014 km 
1 99000U          91100.84000000  .00000000  00000-0  00000+0 0    03 
2 99000  28.5855  68.6294 7402000 245.7453 223.6356  2.20535600    01 
  
 I have searched through the Satellite Situation Report Volume 31, Number 1 
 (March 31, 1991) and found several similar orbits: 
  
                                                  incl   peri x apog 
1970 003B  Intelsat 3-6 Star 37-D PKM     4298    28.0    346 x 30303 km 
1971 006B  Intelsat 4-2 R Centaur         4882    27.6    633 x 36501 km 
1972 003B  Intelsat 4-4 R Centaur         5816    27.6    555 x 36560 km 
1981 012A  KIKU 3 (ETS 4)                12295    28.4    254 x 24450 km 
1981 012C  KIKU 3 PKM                    12787    28.1    266 x 30491 km 
1989 070B  GMS 4 2nd Stage               20230    28.1    173 x 32148 km 
1990 090C  Ulysses IUS lower stage       20843    28.4    320 x 32029 km 
  
 None of these satellites is responsible for the observations of Gerhart 
 Klaus, so he may have photographed a classified GTO-object. 
  
 Rainer     (r.kracht@abbs.heide.de)