Re: "average" elements for 2000 04A-E objects (JAWSAT)

From: Mike McCants (mikem@fc.net)
Date: Sat Jan 29 2000 - 10:00:06 PST

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    >Since the C object shows significant drag, it should be OCS.
    
    I wish to retract this statement.  The C object does not appear to
    show significant drag.  It is possible that the B object does have
    a significant drag.  Or possibly D.
    
    >The other objects may or may not have the correct names.
    
    Even the C object may have the wrong name.  Perhaps B is OCS.
    
    If so, this current Spacecom elset may be correct:
    
    1 26062U 00004B   00029.54446520  .00027293  00000-0  96727-2 0   134
    2 26062 100.2304 226.5667 0037536 182.3310 177.7718 14.34033227   348
    
    If I take the following parts of the line 1 elements and aranges
    them in ascending order, I get:
    
    1 26065U 00004E   00028.84635834
    1 26063U 00004C   00028.84649291
    1 26061U 00004A   00028.84664136
    1 26062U 00004B   00028.84673841
    1 26064U 00004D   00028.84682191
    
    1 26065U 00004E   00029.05563575
    1 26063U 00004C   00029.05578802
    1 26061U 00004A   00029.05595315
    1 26062U 00004B   00029.05605640
    1 26064U 00004D   00029.05615445
    
    If I convert these equator crossing times into days, hours, minutes,
    seconds, I get:
    
     28 20 18 45.3 E
     28 20 18 56.9 C  13.6 after 1st
     28 20 19  9.8 A  24.5 after 1st
     28 20 19 18.2 B  32.9 after 1st
     28 20 19 25.3 D  40.0 after 1st
    
     29  1 20  6.9 E
     29  1 20 20.1 C  13.3 after 1st
     29  1 20 34.3 A  27.4 after 1st
     29  1 20 43.2 B  36.3 after 1st
     29  1 20 51.7 D  44.8 after 1st
    
    This indicates a rather stable relationship between the objects.
    
    Here is my revised elset for 2000 04C with a near-zero drag:
    
    OCS
    1 26063U 00004C   00029.54413656  .00000200  00000-0  70864-4 0    00
    2 26063 100.2299 226.5624 0038043 182.9562 177.1382 14.34185012    08
    
    Mike McCants
    
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