Re: Satellite/Laser again

Rainer Kracht (R.KRACHT@ABBS.heide.de)
Sun, 22 Jan 95 20:09:22 GMT

>Positions at a time interval of 15 s were : 
> 
>RA 12h20m Dec. -10 degrees 
>RA 13h50m Dec. -3 degrees 
>RA 15h00m Dec. 13 degrees 
>RA 16h00m Dec. 26 degrees 
  
>>The object disappeared in Ursa Major, maybe due to the entry into the 
>>shadow or due to a high building obscuring it. 
  
The positions give a direction of motion towards Hercules/Lyra (not UMa). 
If the object was last seen in UMa, then it was not a satellite (possibly 
an airplane). 
  
If the positions are good to one degree, the equinox is 1950.0 and the time  
was about 04:45 UTC, then it is possible to fit the following orbit to the  
last three observations: 
  
    1 
   45.3000   -6.4000     5250.    Swiss Alps 
UNK941229LA    
1 99000U          94363.09739082  .00000000  00000-0  00000+0 0    03 
2 99000  63.3000 149.3725 7600031  27.7400 289.2765  2.00600000    07 
  1 94 12 29  4 45 15.0  13 50.0  -3.00 1950 
  1 94 12 29  4 45 30.0  15 00.0  13.00 1950 
  1 94 12 29  4 45 45.0  16 00.0  26.00 1950 
  0  0 
                          calc.            obs. 
 1 363  4 45 15.0    .0 13 49.2 -2.81  13 50.0 -3.00   .20  -.19   .28  49 
 1 363  4 45 30.0    .0 14 58.9 13.32  15   .0 13.00   .28  -.32   .42  51 
 1 363  4 45 45.0   -.1 16  2.2 25.31  16   .0 26.00  -.51   .69   .86  52 
  
With all observations residuals are much greater: 
  
    1 
   45.3000   -6.4000     5250.    Swiss Alps 
UNK941229LA    
1 99000U          94363.09739082  .00000000  00000-0  00000+0 0    03 
2 99000  63.3000 149.2369 7512911  46.8005 287.5648  2.00600000    03 
  1 94 12 29  4 45 00.0  12 20.0 -10.00 1950 
  1 94 12 29  4 45 15.0  13 50.0  -3.00 1950 
  1 94 12 29  4 45 30.0  15 00.0  13.00 1950 
  1 94 12 29  4 45 45.0  16 00.0  26.00 1950 
  0  0 
  
 1 363  4 45   .0    .8 12 28.9-13.30  12 20.0-10.00 -2.21  3.30  3.97  48 
 1 363  4 45 15.0   -.5 13 40.6   .17  13 50.0 -3.00  2.36 -3.17  3.95  49 
 1 363  4 45 30.0   -.3 14 56.6 14.13  15   .0 13.00   .82 -1.13  1.40  51 
 1 363  4 45 45.0    .9 16  4.8 24.14  16   .0 26.00 -1.09  1.86  2.16  52 
  
 Rainer