Which is correct?

From: Greg Roberts (grr@iafrica.com)
Date: Wed Mar 22 2006 - 02:52:51 EST

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    Greetings readers:
    
    Ive had a look at several prediction programs to see
    if I could find which was correct . I attach a specific
    example and would appreciate if you could try your
    favourite prediction program to see if there is any
    agreement. Whilst the difference in the three programs
    tried is not terrible it is more than my 2 degree field
    of view will allow.
    
    Time in all cases is South African Standard Time which is 2.0 hours
    fast on UT. Angles in degrees.
    
    Hope the spacing comes out okay - is okay in the text document
    prepared offline but OUTLOOK EXPRESS seems to mess it up!
    Ive left them as originally.
    
    Ive always found GUIDE to be pretty good and I also have
    confidence in Mikes program - my one is normally okay but none
    of them agree.
    
    Almost forgot - my coordinates needed !!
    
    Longitude  +18.51284 (East)    Latitude  -33.94058 ( south )  Alt=10
    metres
    
    Many thanks
    Greg
    
    ++++++++++++++++++++++++++++++++++++++++++++++++++++++
    
    Element set used:
    --------------------
    Unknown 041206
    1 90027U 04841A   06071.55035598 0.00001113  00000-0  11045+1 0    09
    2 90027  62.3773 158.6750 6940454 268.4454  91.5512  2.00728666    05
    
    SEECOSAT: (My program- SGP4 only)
    ===================================
    2006 MAR 20   90027
    TIME      azimuth   Elevation dT   mag range PA    RA      Dec      Age
    -----------------------------------------------------------------------
    23:35:00  231.6700   12.7600  0.2  7.8  4764 114  59.2639 -38.7292    8
    23:36:00  235.4400   17.2600  0.2  7.2  4589 108  66.8426 -37.9744    8
    23:37:00  239.7100   21.8300  0.2  6.8  4455 102  74.5452 -36.5755    8
    23:38:00  244.5400   26.3500  0.2  6.5  4362  97  82.1367 -34.5332    8
    23:39:00  249.9600   30.6700  0.2  6.2  4313  91  89.4019 -31.9081    8
    23:40:00  255.9600   34.6500  0.2  6.1  4309  85  96.1801 -28.8116    8
    23:45:00  290.7800   45.7200  0.2  5.9  4880  59 121.3589 -11.0662    8
    23:50:00  318.1400   44.1500  0.2  6.2  6085  45 135.6444   3.2736    8
    
    HIGHFLY: (Mike McCants)
    ========================
    90027 Unknown 041206             ** 4.0 ElDy  9 Dr   11
      TIME    az  el  mag            RA     Dec
     23  35   15 234  9.4   2446   4 13.46 -38.44   4639   4 12.61 -39.34
     23  36   20 238  8.9   2584   4 44.32 -37.32   4485   4 44.45 -38.24
     23  37   25 242  8.6   2731   5 15.23 -35.54   4373   5 16.37 -36.43
     23  38   29 248  8.3   2887   5 45.14 -33.14   4305   5 47.20 -33.97
     23  39   33 253  8.1   3051   6 13.32 -30.20   4282   6 16.15 -30.94
     23  40   37 260  8.0   3222   6 39.24 -26.88   4303   6 42.66 -27.50
     23  45   46 295  7.9   4168   8 14.03  -9.04   4976   8 18.30  -9.17
     23  50   44 321  8.3   5215   9  7.76   4.76   6231   9 11.62   4.80
    
    90027    GUIDE 8  (SDP4?)
    ================================
    Date                delta   mag Elong  Alt    Azim
    ----                -----   --- ----- ------ ------
    20 Mar 2006 23:35   4505.6  7.1  73.9  19.35 236.85
    20 Mar 2006 23:36   4385.2  6.9  79.7  23.96 241.35
    20 Mar 2006 23:37   4308.2  6.8  85.7  28.46 246.43
    20 Mar 2006 23:38   4276.1  6.6  91.7  32.71 252.13
    20 Mar 2006 23:39   4288.5  6.5  97.6  36.56 258.42
    20 Mar 2006 23:40   4344.0  6.5 103.3  39.85 265.23
    20 Mar 2006 23:45   5143.0  6.6 126.0  46.53 300.43
    20 Mar 2006 23:50   6451.7  6.9 138.2  43.01 324.07
    
    Summary: (taking specific times) (South African Standard Time - UT+2.0
    hrs)
    ======================================
    
                 Greg           Mike          Guide
    Time      az      el       az  el      az      el
    ------  ---------------  ----------  ----------------
    23:35    231.67  12.76    234  15     236.85  19.35
    23:50    318.14  44.15    321  44     324.07  43.01
    
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