Besselian Elements for Total Solar Eclipse of 1938 May 29 (original) (raw)

Fred Espenak

The following table contains the Besselian elements for the Total Solar Eclipse of 1938 May 29 .

The geographic coordinates of the eclipse path are in the Path Table . The global visibility of the eclipse is shown on an Orthographic Map . The features of this map are described in the Key to Solar Eclipse Path Tables. The path of the eclipse is displayed in greater detail on a Google Map .

Besselian Elements for the Total Solar Eclipse of 1938 May 29

        Equatorial Conjunction:     13:43:32.1 TDT     J.D. = 2429048.071899
          (Sun & Moon in R.A.)    (=13:43:08.1 UT)

         Ecliptic Conjunction:      13:59:56.4 TDT     J.D. = 2429048.083291
         (Sun & Moon in Ec. Lo.)  (=13:59:32.4 UT)

              Instant of            13:50:18.5 TDT     J.D. = 2429048.076603
           Greatest Eclipse:      (=13:49:54.5 UT)


        --------------------------------------------------------------------------- 
                    Gamma = -0.9607            Ephemerides = VSOP87/ELP2000-82
        Eclipse Magnitude =  1.0552           Lunation No. =    -762
                       ΔT =    24.0 s         Saros Series =  146 (23/76)

        Lunar Radius   k1 = 0.272488 (Penumbra)        Shift in      Δb =  0.00"
         Constants:    k2 = 0.272281 (Umbra)       Lunar Position:   Δl =  0.00"

        --------------------------------------------------------------------------- 
        Geocentric Coordinates of Sun & Moon at Greatest Eclipse (VSOP87/ELP2000-82):

        Sun:       R.A. = 04h22m54.3s         Moon:      R.A. = 04h23m11.2s
                   Dec. =+21°34'16.2"                    Dec. =+20°36'05.3"
          Semi-Diameter =    15'46.6"           Semi-Diameter =    16'34.8"
            Eq.Hor.Par. =       08.7"             Eq.Hor.Par. =  1°00'50.8"

        --------------------------------------------------------------------------- 
        Polynomial Besselian Elements for:   1938 May 29   14:00:00.0 TDT  (=t0)

          n        x          y         d          l1         l2          μ

          0   0.158422  -0.952130   21.57453   0.533011  -0.013061   30.70473
          1   0.5772975  0.0392253   0.006440 -0.0000658 -0.0000655  15.000157
          2   0.0000108 -0.0000965  -0.000005 -0.0000126 -0.0000125
          3  -0.0000096 -0.0000005

                         Tan ƒ1 = 0.0046117    Tan ƒ2 = 0.0045887

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

           a = a0 + a1*t + a2*t^2 + a3*t^3    (or a = Σ [an*t^n]; n = 0 to 3)

              where:    a = x, y, d, l1, l2, or μ
                        t = t1 - t0  (decimal hours) and t0 = 14.000 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.
        The Besselian elements are valid over the period 11.00 ≤ t0 ≤ 17.00 TDT.

        Note that all times are expressed in Terrestrial Dynamical Time (TDT).

               Saros Series 146:  Member 23 of 76 eclipses in series.

Total Solar Eclipse of 1938 May 29

Acknowledgments

Predictions for the Total Solar Eclipse of 1938 May 29 were generated using the VSOP87/ELP2000-82 solar and lunar ephemerides and a value of ΔT = 24.0 seconds. The accuracy of the northern and southern edges of the eclipse path are limited to approximately 1-2 kilometers due to the lunar limb profile.

All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy. Permission is freely granted to reproduce this data when accompanied by an acknowledgment:

"Eclipse Predictions by Fred Espenak, NASA's GSFC"

For more information, see: NASA Copyright Information