Table 2. Shadow Contacts and Circumstances,
Total Solar Eclipse of 1998 February 26

                                                             T =    63.4 s
                                                                =  000°15.9´E

                             Dynamical               Ephemeris      True
                               Time      Latitude    Longitude*   Longitude**
                             h  m  s
Contacts of Penumbra:  P1   14:51:26.1   07°13.4´S   130°44.1´W   130°28.2´W
                       P2   16:48:32.3   14°59.2´N   156°35.4´W   156°19.5´W
                       P3   18:10:09.9   47°04.7´N   008°40.5´W   008°24.6´W
                       P4   20:07:20.6   25°00.3´N   032°39.1´W   032°23.2´W
North/South Limits
of Penumbral Path:     N1   16:21:40.4   34°38.9´N   146°10.8´W   145°54.9´W
                       S1   15:53:51.7   33°21.8´S   150°58.6´W   150°42.7´W
                       N2   18:36:50.9   66°04.6´N   025°53.7´W   025°37.8´W
                       S2   19:05:09.5   01°10.3´S   012°51.1´W   012°35.3´W

 Contacts of Umbra:    U1   15:47:48.6   02°27.1´S   144°06.0´W   143°50.1´W
                       U2   15:49:17.2   02°15.5´S   144°26.4´W   144°10.5´W
                       U3   19:09:28.9   29°57.0´N   019°08.5´W   018°52.6´W
                       U4   19:11:00.4   29°45.1´N   019°29.0´W   019°13.1´W
North/South Limits
  of Umbral Path:      N1   15:48:40.8   01°57.1´S   144°14.5´W   143°58.6´W
                       S1   15:48:25.4   02°45.6´S   144°18.1´W   144°02.2´W
                       N2   19:10:06.3   30°15.9´N   019°21.7´W   019°05.8´W
                       S2   19:10:22.5   29°26.2´N   019°15.6´W   018°59.7´W

 Extreme Limits
 of Center Line:       C1   15:48:32.9   02°21.4´S   144°16.2´W   144°00.3´W
                       C2   19:10:14.7   29°51.0´N   019°18.7´W   019°02.8´W

   Instant of 
Greatest Eclipse:      G0   17:29:26.6   04°43.3´N   082°58.8´W   082°42.9´W

Circumstances at
Greatest Eclipse:   Sunšs Altitude =  76.1°         Path Width = 151.3 km
                     Sunšs Azimuth = 162.9°   Central Duration =  04m07.9s

* Ephemeris Longitude is the terrestrial dynamical longitude assuming a uniformly rotating Earth. ** True Longitude is calculated by correcting the Ephemeris Longitude for the non-uniform rotation of Earth. (T.L. = E.L. - 1.002738*T/240, where T (in seconds) = TDT - UT)

Note: Longitude is measured positive to the East.

Since T is not known in advance, the value used in the predictions is an extrapolation based on pre-1994 measurements. Nevertheless, the actual value is expected to fall within ą0.3 seconds of the estimated T used here.

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