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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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<H2>Current OVATION Boundary Information</H2><BR>
<PRE>
26 Aug 1997 18:29:40 yearsecs  20543380
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -64.69  152.50  -50.54   94.16
    1.00  -64.99  167.50  -49.88  104.67
    2.00  -66.01  182.50  -50.39  115.13
    3.00  -67.03  197.50  -51.44  125.10
    4.00  -66.79  212.50  -51.84  134.91
    5.00  -67.62  227.50  -53.82  144.49
    6.00  -67.65  242.50  -55.50  154.37
    7.00  -67.61  257.50  -57.51  164.49
    8.00  -68.36  272.50  -60.57  173.99
    9.00  -68.21  287.50  -63.26  184.55
   10.00  -67.86  302.50  -66.23  195.97
   11.00  -67.68  317.50  -69.73  208.31
   12.00  -67.73  332.50  -73.58  222.54
   13.00  -68.01  347.50  -77.49  240.76
   14.00  -68.51    2.50  -81.00  267.89
   15.00  -69.23   17.50  -82.77  310.60
   16.00  -70.12   32.50  -81.47  354.47
   17.00  -70.91   47.50  -78.25   21.90
   18.00  -70.86   62.50  -73.98   37.02
   19.00  -69.94   77.50  -69.12   46.96
   20.00  -68.77   92.50  -64.29   56.05
   21.00  -68.02  107.50  -60.26   65.85
   22.00  -66.54  122.50  -56.01   74.74
   23.00  -65.17  137.50  -52.50   84.03
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -69.69  152.50  -55.63   97.02
    1.00  -71.13  167.50  -56.07  107.01
    2.00  -72.39  182.50  -56.81  116.30
    3.00  -77.20  197.50  -61.64  124.80
    4.00  -79.52  212.50  -64.37  131.26
    5.00  -80.00  227.50  -65.59  137.40
    6.00  -79.54  242.50  -66.30  144.20
    7.00  -79.11  257.50  -67.45  151.17
    8.00  -79.50  272.50  -69.62  156.51
    9.00  -79.33  287.50  -71.67  162.54
   10.00  -79.49  302.50  -74.21  166.96
   11.00  -79.40  317.50  -76.84  171.16
   12.00  -79.30  332.50  -79.66  173.64
   13.00  -78.82  347.50  -82.65  175.42
   14.00  -78.52    2.50  -85.64  166.24
   15.00  -77.98   17.50  -87.61  116.88
   16.00  -77.86   32.50  -85.32   70.88
   17.00  -77.28   47.50  -81.78   60.70
   18.00  -77.24   62.50  -78.10   64.05
   19.00  -76.13   77.50  -73.99   65.32
   20.00  -75.35   92.50  -70.09   70.35
   21.00  -73.55  107.50  -65.54   74.59
   22.00  -71.54  122.50  -61.03   80.37
   23.00  -70.17  137.50  -57.60   88.06
</PRE>


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