Table 1. Elements of the Total Solar Eclipse of 2001 June 21


Geocentric Conjunction      11:58:54.06 TDT     J.D. = 2452081.999237
 of Sun & Moon in R.A.:   (=11:57:49.06 UT)

      Instant of            12:04:46.26 TDT     J.D. = 2452082.003313
   Greatest Eclipse:      (=12:03:41.26 UT)


Geocentric Coordinates of Sun & Moon at Greatest Eclipse (DE200/LE200):

Sun:       R.A. = 06h00m46.131s       Moon:      R.A. = 06h01m00.453s
           Dec. =+23°21´18.20"                   Dec. =+22°52´27.17"
  Semi-Diameter =    15'44.26"          Semi-Diameter =    16'17.69"
    Eq.Hor.Par. =       08.65"            Eq.Hor.Par. =  0°59'47.93"
          R.A. =       10.406s/h               R.A. =      156.807s/h
          Dec. =       -0.18"/h                Dec. =      196.15"/h


Lunar Radius   k1 = 0.2725076 (Penumbra)        Shift in      b =  0.00"
 Constants:    k2 = 0.2722810 (Umbra)       Lunar Position:   l =  0.00"

Geocentric Libration:   l =  -3.8°       Brown Lun. No. =  971
(Optical + Physical)    b =   0.7°         Saros Series =  127 (57/82)
                        c =   2.0°            Ephemeris = (DE200/LE200)

Eclipse Magnitude = 1.04953        Gamma =-0.57014        T =    65.0 s


Polynomial Besselian Elements for:   2001 Jun 21   12:00:00.0 TDT  (=t0)

  n        x          y         d          l1         l2          

  0   0.0103551 -0.5718306 23.4397678  0.5369922 -0.0091193 359.564514
  1   0.5653870  0.0551258 -0.0001831 -0.0000944 -0.0000939  14.999194
  2   0.0000292 -0.0001339 -0.0000056 -0.0000121 -0.0000121   0.000000
  3  -0.0000089 -0.0000010  0.0000000  0.0000000  0.0000000   0.000000

tan f1 = 0.0046005

tan f2 = 0.0045776

At time t1 (decimal hours), each Besselian element is evaluated by:

where: a = x, y, d, l1, l2, or ; t = t1 - t0 (decimal hours), and t0 = 12.000 TDT

The Besselian elements were derived from a least-squares fit to elements calculated at five uniformly spaced times over a six hour period centered at t0. Thus the elements are valid over the period 9.00 < t1 < 15.00 TDT.


Saros Series 127: Member 57 of 82 eclipses in series.
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