# Besselian Elements for the Annular Solar Eclipse of 1950 Mar 18

## Fred Espenak

The following table contains the Besselian elements for the Annular Solar Eclipse of 1950 Mar 18 .

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  1950 Mar 18
Non-Central Eclipse
Equatorial Conjunction:     14:27:07.9 TDT     J.D. = 2433359.102175
(Sun & Moon in R.A.)    (=14:26:38.8 UT)

Ecliptic Conjunction:      15:20:29.8 TDT     J.D. = 2433359.139233
(Sun & Moon in Ec. Lo.)  (=15:20:00.6 UT)

Instant of            15:32:01.3 TDT     J.D. = 2433359.147237
Greatest Eclipse:      (=15:31:32.1 UT)

---------------------------------------------------------------------------
Gamma = -0.9988            Ephemerides = VSOP87/ELP2000-82
Eclipse Magnitude =  0.9620           Lunation No. =    -616
ΔT =    29.2 s         Saros Series =  119 (62/71)

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. = 23h50m43.1s         Moon:      R.A. = 23h52m29.2s
Dec. =-01°00'22.2"                    Dec. =-01°48'04.0"
Semi-Diameter =    16'03.9"           Semi-Diameter =    14'55.6"
Eq.Hor.Par. =       08.8"             Eq.Hor.Par. =  0°54'47.0"

---------------------------------------------------------------------------
Polynomial Besselian Elements for:   1950 Mar 18   16:00:00.0 TDT  (=t0)

n        x          y         d          l1         l2          μ

0   0.694347  -0.756797   -0.99661   0.567283   0.021040   57.94582
1   0.4485532  0.2493235   0.015869  0.0000647  0.0000644  15.004132
2  -0.0000402  0.0000323   0.000000 -0.0000101 -0.0000101
3  -0.0000052 -0.0000031

Tan ƒ1 = 0.0046976    Tan ƒ2 = 0.0046742

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 = 16.000 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 13.00 ≤ t0 ≤ 19.00 TDT.

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

Saros Series 119:  Member 62 of 71 eclipses in series.

```
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