"Near collision" June 22

Bjoern Gimle (b_gimle@algonet.se)
Thu, 13 Jun 1996 22:20:23 +0200 (MET DST)

Cosmos 1833/2227 rockets may come within 1 km of each other on June 22 ?

I will post more accurate predictions at
www.algonet.se/~b_gimle/encountr.htm, and on SeeSat-L mail list.

Cosmos 1833 rocket ( Zenith-2, USSPACECOM #17590 ) had an acceleration 
around Feb.01, 1996.

Cosmos 1833 r   2.5 10.4 3.9 0.0  22             843 x 836
1 17590U 87027B   96164.02978821 -.00000367 +00000-0 -16219-3 0 05445
2 17590 070.9986 101.7316 0004194 144.8603 215.2799 14.15832433477373

Cosmos 2227 rocket, #22285, is in a very similar orbit (about 6 km higher), 
and #17590 is now chasing it, for a very close encounter on or about June 22.
See <A HREF="gif\22285.gif">the corresponding MM chart</A>, and the 
predictions <A HREF="encountr.htm#C1833">below</A> !
<p>
<pre>
Cosmos 2227 r   2.0 10.4 3.9 0.0                 850 x 842
1 22285U 92093B   96164.01565204 +.00000027 +00000-0 +39281-4 0 06051
2 22285 071.0153 101.4600 0005392 277.4190 082.6326 14.13905520177168


The RAAN difference is about 0.25 degrees, and decreasing, so future 
encounters may be even closer !


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