SPOT 9: POLAR/GEOTAIL Study of Polar Cap

The following list consists of those times when the POLAR and GEOTAIL
spacecraft are expected to be on the same magnetic field line, GEOTAIL
is skimming through the magnetopause, and POLAR is in time sector 05-18 
hours MLT.  The magnetic conjunctions were obtained by using a B-field
trace in either direction (north or sourth) from GEOTAIL where the trace
falls within 400 km of POLAR.  In addition the criterion for GEOTAIL
skimming the magnetopause is that the spacecraft be located within about
4-5 RE of the magnetopause.  Up to one hour coverage on each side of the
conjunction time is requested.



      Time     Sat.   |    GEO     |Radius| gmLT |dMpause|Spacecraft| Sat. Dist.
yyyy ddd hh:mm        | Lat   Long | (RE) | hh:mm|  (RE) |  Region  | Apart (RE)

1997 164 15:03 geotail   7.1 -105.1  14.06  07:47    1.98  D Msheath   ***
1997 164 15:03 polar    27.7   72.5   4.37  19:53   -4.28  N Msphere
===============================================================================
1997 174 03:33 geotail   6.0 -126.2  15.43  19:15   -3.18  N Msphere   13.22
1997 174 03:33 polar    51.9 -127.2   6.22  18:13   -7.38  D Msphere   

1997 174 03:57 geotail  -6.5 -130.6  15.17  19:21   -3.66  N Msphere   12.61
1997 174 03:57 polar    46.9 -132.5   5.77  18:23   -8.02  D Msphere   

-------------------------------------------------------------------------------

1997 190 14:33 geotail   5.4 -128.2  12.49  05:38   -2.13  N Msphere    8.46
1997 190 14:33 polar    37.1 -121.2   5.35  05:41   -7.11  D Msphere

1997 190 15:51 geotail   7.5 -140.5  13.32  06:11   -0.57  D Msphere    9.85
1997 190 15:51 polar    53.1 -138.7   6.76  05:27   -5.57  D Msphere
-------------------------------------------------------------------------------

1997 200 23:00 geotail   5.5   95.2  12.43  05:30   -3.41  N Msphere    8.87
1997 200 23:00 polar    47.3  102.9   6.27  06:04   -6.61  D Msphere   

1997 201 00:51 geotail   8.2   78.0  13.63  06:07   -1.12  N Msphere   11.25
1997 201 00:51 polar    63.9   78.6   7.80  06:42   -4.97  D Msphere   

-------------------------------------------------------------------------------

1997 206 04:15 geotail   6.4   14.6  12.82  05:14   -3.33  N Msphere   10.40
1997 206 04:15 polar    60.5   21.4   7.52  06:47   -5.42  D Msphere   

1997 206 04:18 geotail   6.5   14.2  12.84  05:15   -3.27  N Msphere   10.47
1997 206 04:18 polar    60.9   20.8   7.55  06:48   -5.38  D Msphere   

1997 206 04:21 geotail   6.5   13.7  12.87  05:16   -3.21  N Msphere   10.53   
1997 206 04:21 polar    61.2   20.1   7.59  06:50   -5.34  D Msphere

1997 206 05:39 geotail   8.7    1.0  13.71  05:42   -1.55  N Msphere   12.24
1997 206 05:39 polar    70.3    4.2   8.33  07:47   -4.45  D Msphere   

1997 206 05:45 geotail   8.5    0.0  13.77  05:43   -1.43  N Msphere   12.37
1997 206 05:45 polar    71.0    3.0   8.38  07:53   -4.40  D Msphere


================================================================================

*** Did not turn out to be a magnetic conjunction due to Polar flip maneuver and
    Geotail maneuver to lower perigee, both of which occurred just prior to this
    previously projected conjunction time.

Last Updated:  7/01/97