   Instant of          18:47:26 TDT     JD = 2714992.28300 
Greatest Eclipse:    (=18:4:34 UT)

Gamma = 0.5665             Ephemerides  = VSOP87/ELP2000-82 
Eclipse Magnitude = 0.9657             Lunation No. = 8921 
     Eclipse Type = A                  Saros Series = 150 
                                                 ΔT = 2571.9 s

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


Polynomial Besselian Elements for:   2721 Apr 18   19.000 TDT  (=t0)

  n        x          y         d          l1         l2          μ

  0  -0.0411490  0.5756960 10.8933897  0.5597480  0.0135420 105.125557 
  1   0.5080080  0.1370171  0.0142140  0.0000999  0.0000994  15.003270 
  2   0.0000051 -0.0000938 -0.0000020 -0.0000106 -0.0000105   0.000000 
  3  -0.0000064 -0.0000016  0.0000000  0.0000000  0.0000000   0.000000
  
                tan f1 = 0.0046732        tan f2 = 0.0046500 

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

a = a0 + a1*t + a2*t2 + a3*t3  

where: a = x, y, d, l1, l2, or μ; t = t1 - t0 (decimal hours), and t0 =  19.000 TDT.


Circumstances at Greatest Eclipse:  18:4:34 UT

Latitude:   44.1° N      Sun’s Altitude:    55.2°          Path Width = 149.6 km
Longitude: 103.1° W      Sun’s Azimuth:    159.3°    Central Duration = 03m17s 
