   Instant of          17:26:06 TDT     JD = 2521419.22600 
Greatest Eclipse:    (=17:19:5 UT)

Gamma = 0.7991             Ephemerides  = VSOP87/ELP2000-82 
Eclipse Magnitude = 0.9993             Lunation No. = 2366 
     Eclipse Type = A                  Saros Series = 151 
                                                 ΔT = 420.5 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:   2191 Apr 23   17.000 TDT  (=t0)

  n        x          y         d          l1         l2          μ

  0  -0.5585810  0.6189640 12.7069798  0.5490500  0.0028970  75.407967 
  1   0.4936553  0.2354245  0.0132360  0.0001266  0.0001260  15.003060 
  2   0.0000438 -0.0001082 -0.0000030 -0.0000114 -0.0000113   0.000000 
  3  -0.0000069 -0.0000034  0.0000000  0.0000000  0.0000000   0.000000
  
                tan f1 = 0.0046538        tan f2 = 0.0046306 

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:  17:19:5 UT

Latitude:   57.0° N      Sun’s Altitude:    36.7°          Path Width = 3.9 km
Longitude: 119.2° W      Sun’s Azimuth:    130.0°    Central Duration = 00m03s 
