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<HEAD>

    <TITLE>JHU/APL Auroral Oval Boundary</TITLE>

    <META NAME="Copyright" CONTENT="Copyright 2000 Johns Hopkins University Applied Physics Laboratory"/>

    <META NAME="Date" CONTENT="21 February 2000"/>

    <META NAME="Author" CONTENT="J. P. Skura"/>


  

  

    

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<BODY BGCOLOR="#FFFFFF">



<H2>Current OVATION Boundary Information</H2><BR>
<PRE>
25 Apr 1997 16:28:36 yearsecs   9908916
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -66.38  186.64  -50.71  117.93
    1.00  -66.40  201.64  -50.93  127.83
    2.00  -67.14  216.64  -52.46  137.54
    3.00  -67.88  231.64  -54.48  147.08
    4.00  -67.42  246.64  -55.82  157.28
    5.00  -68.00  261.64  -58.48  166.97
    6.00  -67.84  276.64  -60.86  177.42
    7.00  -68.11  291.64  -64.04  187.63
    8.00  -69.12  306.64  -68.25  196.84
    9.00  -69.52  321.64  -72.25  207.83
   10.00  -69.34  336.64  -75.92  222.75
   11.00  -69.10  351.64  -79.39  243.87
   12.00  -69.10    6.64  -82.17  276.97
   13.00  -69.33   21.64  -82.56  323.70
   14.00  -69.79   36.64  -80.13    1.35
   15.00  -70.48   51.64  -76.69   25.04
   16.00  -71.14   66.64  -73.10   41.46
   17.00  -71.27   81.64  -69.28   53.31
   18.00  -71.42   96.64  -65.86   63.95
   19.00  -70.78  111.64  -62.17   72.59
   20.00  -69.96  126.64  -58.84   81.08
   21.00  -69.17  141.64  -56.13   89.82
   22.00  -68.53  156.64  -54.13   98.97
   23.00  -67.60  171.64  -52.32  108.31
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -71.62  186.64  -55.97  118.60
    1.00  -72.73  201.64  -57.20  127.36
    2.00  -73.48  216.64  -58.57  135.70
    3.00  -78.75  231.64  -64.68  140.28
    4.00  -80.56  246.64  -67.57  144.52
    5.00  -80.94  261.64  -69.37  149.44
    6.00  -80.29  276.64  -70.72  156.18
    7.00  -79.31  291.64  -72.32  164.05
    8.00  -79.37  306.64  -74.87  168.60
    9.00  -79.35  321.64  -77.60  172.18
   10.00  -79.12  336.64  -80.46  174.79
   11.00  -79.17  351.64  -83.35  170.55
   12.00  -79.43    6.64  -85.54  149.23
   13.00  -79.26   21.64  -86.04  107.88
   14.00  -79.09   36.64  -83.96   80.26
   15.00  -78.91   51.64  -80.89   72.76
   16.00  -78.74   66.64  -77.62   72.83
   17.00  -78.55   81.64  -74.42   75.91
   18.00  -79.60   96.64  -72.21   84.20
   19.00  -79.87  111.64  -70.06   89.90
   20.00  -79.11  126.64  -67.48   93.90
   21.00  -77.36  141.64  -64.23   97.80
   22.00  -74.62  156.64  -60.26  102.76
   23.00  -72.91  171.64  -57.67  110.18
</PRE>


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