Two new unknown geosats

Rainer Kracht (R.Kracht@t-online.de)
Tue, 27 Feb 96 22:23 +0100

 Two new unknown geosats
 -----------------------

 On Feb 22 Daniel Karcher took a photograph of an unknown geosat close
 to 12.1 deg west longitude, which showed no (or small) trail during the
 90 sec exposure. The next day I tried to find it with my 8" SCT without
 success. But close to the expected position of Daniel's object there was
 another unknown geosat (about mag 10.5) which moved about 70 arcsec/min
 to the north and 40 arcsec/min to the east. I followed the object for
 more than an hour and could derive a first orbit. The inclination of
 the orbit is 4.0 deg and I have found it close to its ascending node.

 Daniel managed to take photographs of the new geosat on Feb 24,25,26,
 so we have now a reliable orbit for it:

GEO348        
1 99348U          96 56.00000000  .00000000  00000-0  00000+0 0    01
2 99348   4.0208  87.3294 0228524   1.1947  53.5767  1.00271095    05
 
 Daniel's photographs from Feb 25 and 26 also show his unknown from 
 Feb 22. It remained close to 12.1 deg west longitude and has evidently
 a low inclination low eccentricity orbit.

 Jean-Phillippe Donnio's Satellite Encyclopedia has DSCS 3-06 (92-37A,
 22009) at 12 deg west and Jonathan has for 92-37A:

           UNITED NATIONS REGISTRY OF SPACE OBJECTS
Nation Cum COSPAR           Period    Peri     Apo     Inc  Note1 Note2 Ed.Note
(1)    (2) (3)              (4)        (5)      (6)    (7)   (8)  (9)   (10)

US        1392  1992-37A          1436.2    35775 x  35800 x   0.2   1C


 So it seems very likely that Daniel's object is identical with 92-37A.
 Yesterday (Feb 26) at 20:15.5 UTC Daniel saw GEO348 0.15 deg SW of 
 92-37A (mag 11.5) and then a close approach to about 0.05 deg.


 Rainer Kracht   1996 Feb 27
 0412188960-0001@t-online.de
 R.Kracht@t-online.de
 +9.6626E, +53.7695N, 9m