RE: close approaches of Cosmos 1833r and Cosmos 2227r

Tobias, Lynn (tobias@strasys.mdc.com)
21 Jun 1996 18:52:48 -0800

Bill-
This is the second time I've experimented with the "OrbiTrack" (Macintosh, from
ftp://ftp.physics.ox.ac.uk/pub/sat/programs/mac/) "Sat-to-Sat" option. Using
the oig elements below:

COSMOS 1833  SL-16 R/B
1 17590U 87027B   96173.21440860  .00000058  00000-0  53653-4 0  5295
2 17590  70.9971  82.4178 0003718 122.5177 237.6306 14.15833244478675
COSMOS 2227  SL-16 R/B
1 22285U 92093B   96173.21276675 +.00000258 +00000-0 +16090-3 0 06131
2 22285 071.0148 082.2013 0005535 268.9382 091.1104 14.13911555178461

Pass - From: Fri 06/21/96 04:00:00 UTC
       To:   Mon 06/24/96 04:00:00 UTC

           Time UTC          Sep    Plane   Distance 
 DOW   MM/DD/YY HH:MM:SS    Angle   Angle      km    

 Fri   06/21/96 06:00:00     7.84    0.205   987.7   
 Fri   06/21/96 07:00:00     7.75    0.207   975.8   
 Fri   06/21/96 08:00:00     7.30    0.210   919.5   
 Fri   06/21/96 09:00:00     7.08    0.210   891.6   
 Fri   06/21/96 10:00:00     6.83    0.207   861.1   
 Fri   06/21/96 11:00:00     6.41    0.205   807.9   
 Fri   06/21/96 12:00:00     6.32    0.204   795.8   
 Fri   06/21/96 13:00:00     5.84    0.206   735.7   
 Fri   06/21/96 14:00:00     5.67    0.208   714.3   
 Fri   06/21/96 15:00:00     5.36    0.207   675.7   
 Fri   06/21/96 16:00:00     4.99    0.204   628.9   
 Fri   06/21/96 17:00:00     4.87    0.203   614.1   
 Fri   06/21/96 18:00:00     4.39    0.204   553.0   
 Fri   06/21/96 19:00:00     4.26    0.205   536.8   
 Fri   06/21/96 20:00:00     3.89    0.205   490.2   
 Fri   06/21/96 21:00:00     3.58    0.204   450.7   
 Fri   06/21/96 22:00:00     3.42    0.202   431.1   
 Fri   06/21/96 23:00:00     2.95    0.202   371.4   
 Sat   06/22/96 00:00:00     2.84    0.202   358.5   
 Sat   06/22/96 01:00:00     2.42    0.203   305.1   
 Sat   06/22/96 02:00:00     2.17    0.202   273.1   
 Sat   06/22/96 03:00:00     1.96    0.201   246.8   
 Sat   06/22/96 04:00:00     1.52    0.200   191.4   
 Sat   06/22/96 05:00:00     1.42    0.200   179.7   
 Sat   06/22/96 06:00:00     0.96    0.201   121.2   
 Sat   06/22/96 07:00:00     0.76    0.200    96.2   
 Sat   06/22/96 08:00:00     0.49    0.200    62.1   
 Sat   06/22/96 09:00:00     0.19    0.199    25.9 23.9N 154.5W   
 Sat   06/22/96 10:00:00     0.20    0.199    26.0   
 Sat   06/22/96 11:00:00     0.53    0.199    67.1   
 Sat   06/22/96 12:00:00     0.66    0.198    83.9   
 Sat   06/22/96 13:00:00     0.99    0.198   124.3   
 Sat   06/22/96 14:00:00     1.34    0.198   169.8   
 Sat   06/22/96 15:00:00     1.49    0.198   187.3   
 Sat   06/22/96 16:00:00     1.96    0.198   247.8   
 Sat   06/22/96 17:00:00     2.07    0.197   261.4   
 Sat   06/22/96 18:00:00     2.46    0.195   309.8   
 Sat   06/22/96 19:00:00     2.75    0.195   346.7   
 Sat   06/22/96 20:00:00     2.93    0.196   369.9   
 Sat   06/22/96 21:00:00     3.40    0.197   428.9   
 Sat   06/22/96 22:00:00     3.50    0.196   440.6   
 Sat   06/22/96 23:00:00     3.93    0.194   495.0   
 Sun   06/23/96 00:00:00     4.16    0.193   523.9   
 Sun   06/23/96 01:00:00     4.39    0.193   553.9   
 Sun   06/23/96 02:00:00     4.83    0.195   608.8   
 Sun   06/23/96 03:00:00     4.93    0.195   620.9   
 Sun   06/23/96 04:00:00     5.39    0.193   679.5   
 Sun   06/23/96 05:00:00     5.57    0.191   701.1   
 Sun   06/23/96 06:00:00     5.86    0.190   738.6   
 Sun   06/23/96 07:00:00     6.25    0.192   787.4   
 Sun   06/23/96 08:00:00     6.37    0.194   802.3   
 Sun   06/23/96 09:00:00     6.85    0.193   862.9   
 Sun   06/23/96 10:00:00     6.98    0.190   878.9   
 Sun   06/23/96 11:00:00     7.33    0.188   923.6   
 Sun   06/23/96 12:00:00     7.67    0.189   964.9   
 Sun   06/23/96 13:00:00     7.81    0.192   984.7   

The closest approach occurs over Hawaii:
OrbiTrack Look - 06/22/96  Station:    Honolulu HI

SL-16 R/B
Time UTC    Az   El   Range  Height  North   West    Satellite
 HH:MM:SS  Deg  Deg     km     km     Lat    Long   Visibility

 08:52:40 347.4  0.5 3352.72  844.2  47.94  166.64  Illuminated Rise 
 08:57:27 359.0 26.2 1602.61  845.6  32.68  158.17   Into Shadow   
 09:00:46  80.0 61.8  948.60  846.6  21.77  154.15   In shadow Max  
 09:08:37 155.5  0.1 3374.71  848.5  -4.39  146.71   In shadow Set  
I'm not familiar with COLA, is that an IBM PC code?  Are you "Mac challenged"?!
;)  Hope this helps, and that it's correct (get a second opinion before you
book a flight)!
_______________________________________________________________________________
From: Bill Krosney on Fri, Jun 21, 1996 11:34
Subject: close approaches of Cosmos 1833r and Cosmos 2227r
....
I would like to be able to table or graph the distance between
the two Cosmos rockets on an hourly basis for  the time period 06/21
04:00 UT thru 04:00 UT on 06/24.  What's the best way to do this?
Any software out there that will give me most of the info I need?
Or...can someone do this for me?   ;)

As always, clear skies....Bill