   Instant of          16:44:05 TDT     JD = 2188314.19700 
Greatest Eclipse:    (=16:35:16 UT)

Gamma = 0.4945             Ephemerides  = VSOP87/ELP2000-82 
Eclipse Magnitude = 0.9788             Lunation No. = -8914 
     Eclipse Type = A                  Saros Series = 117 
                                                 ΔT = 529.4 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:   1279 Apr 12   17.000 TDT  (=t0)

  n        x          y         d          l1         l2          μ

  0  -0.0945760  0.5053570 11.3236999  0.5561450  0.0099570  75.366417 
  1   0.4743493  0.2362065  0.0137640  0.0001032  0.0001026  15.003690 
  2   0.0000203 -0.0000885 -0.0000020 -0.0000106 -0.0000106   0.000000 
  3  -0.0000060 -0.0000031  0.0000000  0.0000000  0.0000000   0.000000
  
                tan f1 = 0.0046389        tan f2 = 0.0046158 

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 =  17.000 TDT.


Circumstances at Greatest Eclipse:  16:35:16 UT

Latitude:   37.4° N      Sun’s Altitude:    60.2°          Path Width = 86.1 km
Longitude:  85.3° W      Sun’s Azimuth:    146.9°    Central Duration = 01m55s 
