Unusual TRMM element set

From: Ed Cannon (ecannon@mail.utexas.edu)
Date: Sat Apr 29 2000 - 21:39:21 PDT

  • Next message: Ted Molczan: "USA 129 observation"

    In running Quicksat predictions a week ahead, I got a very large 
    time uncertainty for the TRMM predictions just three days from 
    now.  So I went to OIG and got the latest five element sets.  
    The most recent one (day 00120.8) has a significant negative 
    drag, showing a very recent maneuver, I presume.  I don't know 
    how different prediction programs handle such negative drag, but 
    I thought I'd mention it as I think it's at least possible that 
    it could yield unreliable predictions.  
    
    TRMM
    1 25063U 97074A   00120.80620370 -.01989431  00000-0 -15525-1 0  4511
    2 25063  34.9849 164.5011 0001775 283.9979  58.0790 15.73558158139369
    TRMM
    1 25063U 97074A   00118.97043697 +.00107777 +00000-0 +71579-3 0 04556
    2 25063 034.9855 176.9747 0001318 258.1863 101.8716 15.74134571139082
    TRMM
    1 25063U 97074A   00118.52649921  .00111288  00000-0  74179-3 0  4505
    2 25063  34.9859 179.9900 0001623 250.5894 109.4662 15.74040388139018
    TRMM
    1 25063U 97074A   00118.20938460  .00116846  00000-0  78023-3 0  4494
    2 25063  34.9841 182.1453 0001065 269.6334  90.4275 15.73983730138966
    TRMM
    1 25063U 97074A   00117.95620370  .00062566  00000-0  42197-3 0  4484
    2 25063  34.9820 183.8694 0001025 274.7020  88.3000 15.73915074138927
    
    Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA
    
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