IGS eastern plane objects

From: Ted Molczan (molczanssl@rogers.com)
Date: Sun Apr 08 2007 - 21:34:54 EDT

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    Peter Wakelin and Russell Eberst have reported obs made on 2007 Apr 07/08 UTC,
    which have helped clarify the identities, as well as improve orbits. As a
    result, I am making a number of proposed designation changes in this report. I
    apologize for any confusion this may cause; of course I am open to debate
    regarding the final designations.
    
    
    1. David Brierley's 07005A of Apr 05 UTC and Russell's 0700515 of Apr 07 UTC
    appear to be the same object, which I continue to suspect is 06037A. Peter
    Wakelin's obs of Apr 08 UTC was almost exactly 1 s late relative the Apr 07
    elset, below. The object may have manoeuvred; I will wait for additional obs
    before updating the orbit.
    
    IGS-O2           0.0  0.0  0.0  5.7 v
    1 29393U 06037A   07097.00870338  .00002569  00000-0  10000-3 0    03
    2 29393  97.3400 217.9492 0002000  98.7299 261.4166 15.26040798    09
    Arc 2007 Apr 05.05 - 07.02, WRMS residuals = 0.020 deg
    
    
    2. Since the primary payload of the 07005 launch was the radar, I propose that
    it receive the A designation, as I have used for this update. Russell Eberst and
    Peter Wakelin have reported this object as 0700502.
    
    IGS-R2           0.0  0.0  0.0  3.3 v
    1 30586U 07005A   07098.03445010  .00001311  00000-0  51074-4 0    05
    2 30586  97.3274 218.9106 0004987 152.0728 208.0779 15.26003604    06
    Arc 2007 Apr 04.96 - 08.05, WRMS residuals = 0.018 deg
    
    
    3. I propose that the apparent experimental optical payload of the 07005 launch
    receive the A designation, as I have used for this update. Russell Eberst has
    reported this object as 0700599, 0700516 and 9970002; Peter Wakelin has reported
    is as 9970002.
    
    IGS-O3
    1 30587U 07005B   07098.00775558  .00002753  00000-0  10687-3 0    01
    2 30587  97.3249 218.3406 0018706 143.8526 216.3981 15.25967412    06
    Arc 2007 Apr 05.00 - 08.02, WRMS residuals = 0.018 deg
    
    
    4. Russell Eberst has reported the 07005 rocket body as 0700503 (Apr 04 UTC
    only) and 0700513. I propose that we designate it as the C object:
    
    IGS-R2 r         0.0  0.0  0.0  3.6 v
    1 30588U 07005C   07096.96828996  .00007117  00000-0  15000-3 0    03
    2 30588  97.2100 218.4251 0075128 334.9282  24.8324 15.42178602    01
    
    
    5. Russell Eberst has reported what I know believe to be the 07005 adaptor as
    0700500 and 0700514; Peter Wakelin has reported it as 9970001. I propose that we
    designate it as the D object. 
    
    I based this identification on Russell's observations of the pieces of the 03009
    launch, which revealed the adapter is usually steady in brightness, and the
    fairing halves as usually flashing. The object I call D was steady, and two
    flashing objects have been observed (see 07005E and F below), so D must be the
    adapter.
    
    IGS-R2 adapter   0.0  0.0  0.0  4.4 v
    1 30589U 07005D   07098.03020837  .00004529  00000-0  16972-3 0    05
    2 30589  97.2200 218.6523 0008546 248.4713 111.5616 15.27267023    02
    
    
    6. Russell Eberst has reported what I now believe to be one of 07005 fairing
    halves, as 0700503 (Apr 05 UTC only) and 0700521; Peter Wakelin reported it as
    9900000 on Apr 08 UTC. They reported it as either flashing or irregular in
    brightness. I propose that we designate it arbitrarily as the E object. Here are
    approximate elements, based on only three points, derived from the adapter's
    elements:
    
    IGS-R1 shroud1   0.0  0.0  0.0  4.0 v
    1 30590U 07005E   07098.03486949  .00004529  00000-0  16972-3 0    07
    2 30590  97.2200 218.6126 0008546 272.3706  87.6555 15.27269576    01
    Arc 2007 Apr 04.96 - 08.05, WRMS residuals = 0.029 deg
    
    
    7. Russell Eberst has reported what I believe to be the second 07005 fairing
    half as 0700522, which was flashing. I propose that we designate it arbitrarily
    as the F object. Here are very approximate elements, based on a single point,
    derived by adjusting the 07005E elset's RAAN and mean anomaly:
    
    IGS-R2 shroud2   0.0  0.0  0.0  4.0 v
    1 70006U          07098.03640077  .00004529  00000-0  16972-3 0    05
    2 70006  97.2200 218.6755 0008546 272.3648  87.6613 15.27269590    01
    Single point at 2007 Apr 07.98 UTC
    
    Ted Molczan
    
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