Table 2. Shadow Contacts and Circumstances,
Total Solar Eclipse of 2001 June 21

T = 65.0 s = 000°16´17.7"E

                             Dynamical               Ephemeris      True
                               Time      Latitude    Longitude(*)  Longitude(**)
                             h  m  s
Contacts of Penumbra:  P1   09:34:04.6   25°04.6´S   041°22.8´W   041°06.5´W
                       P4   14:35:26.0   14°57.4´S   044°55.7´E   045°12.0´E
North/South Limits
of Penumbral Path:     N1   10:29:28.2   07°21.7´S   063°43.3´W   063°27.0´W
                       S1   13:40:03.3   02°53.3´N   066°40.6´E   066°56.9´E

 Contacts of Umbra:    U1   10:37:00.4   36°18.6´S   050°14.3´W   049°58.0´W
                       U2   10:39:19.8   36°56.2´S   050°22.5´W   050°06.2´W
                       U3   13:30:14.1   27°05.1´S   055°04.0´E   055°20.3´E
                       U4   13:32:37.7   26°25.2´S   054°50.4´E   055°06.7´E
North/South Limits
  of Umbral Path:      N1   10:37:40.6   36°04.8´S   050°34.0´W   050°17.7´W
                       S1   10:38:40.5   37°09.7´S   050°02.8´W   049°46.6´W
                       N2   13:31:56.2   26°10.6´S   055°08.9´E   055°25.1´E
                       S2   13:30:54.7   27°19.6´S   054°45.8´E   055°02.1´E

 Extreme Limits
 of Center Line:       C1   10:38:09.9   36°37.2´S   050°18.5´W   050°02.3´W
                       C2   13:31:26.1   26°45.0´S   054°57.3´E   055°13.6´E

   Instant of 
Greatest Eclipse:      G0   12:04:46.3   11°15.3´S   002°28.5´E   002°44.8´E

Circumstances at
Greatest Eclipse:   Sun's Altitude =  55.2°         Path Width = 200.0 km
                     Sun's Azimuth = 354.8°   Central Duration =  04m56.5s

* 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-2001 measurements. Nevertheless, the actual value is expected to fall within 0.5 seconds of the estimated T used here.
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