Besselian Elements for Annular Solar Eclipse of 1907 Jul 10 (original) (raw)

Fred Espenak

The following table contains the Besselian elements for the Annular Solar Eclipse of 1907 Jul 10 .

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 Annular Solar Eclipse of 1907 Jul 10

        Equatorial Conjunction:     15:26:36.8 TDT     J.D. = 2417767.143481
          (Sun & Moon in R.A.)    (=15:26:29.7 UT)

         Ecliptic Conjunction:      15:17:02.0 TDT     J.D. = 2417767.136828
         (Sun & Moon in Ec. Lo.)  (=15:16:54.9 UT)

              Instant of            15:24:32.4 TDT     J.D. = 2417767.142041
           Greatest Eclipse:      (=15:24:25.3 UT)


        --------------------------------------------------------------------------- 
                    Gamma = -0.6313            Ephemerides = VSOP87/ELP2000-82
        Eclipse Magnitude =  0.9456           Lunation No. =   -1144
                       ΔT =     7.0 s         Saros Series =  125 (48/73)

        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. = 07h14m35.5s         Moon:      R.A. = 07h14m31.5s
                   Dec. =+22°20'34.4"                    Dec. =+21°46'36.5"
          Semi-Diameter =    15'43.9"           Semi-Diameter =    14'42.3"
            Eq.Hor.Par. =       08.6"             Eq.Hor.Par. =  0°53'58.2"

        --------------------------------------------------------------------------- 
        Polynomial Besselian Elements for:   1907 Jul 10   15:00:00.0 TDT  (=t0)

          n        x          y         d          l1         l2          μ

          0  -0.224218  -0.625322   22.34645   0.565492   0.019258   43.75234
          1   0.5055106 -0.0139023  -0.005018 -0.0000062 -0.0000061  14.999760
          2   0.0000059 -0.0001141  -0.000005 -0.0000097 -0.0000096
          3  -0.0000057  0.0000001

                         Tan ƒ1 = 0.0045998    Tan ƒ2 = 0.0045769

        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 = 15.000 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 12.00 ≤ t0 ≤ 18.00 TDT.

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

               Saros Series 125:  Member 48 of 73 eclipses in series.

Annular Solar Eclipse of 1907 Jul 10

Acknowledgments

Predictions for the Annular Solar Eclipse of 1907 Jul 10 were generated using the VSOP87/ELP2000-82 solar and lunar ephemerides and a value of ΔT = 7.0 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