   Instant of          19:40:40 TDT     JD = 2386583.32000 
Greatest Eclipse:    (=19:40:29 UT)

Gamma = 0.6914             Ephemerides  = VSOP87/ELP2000-82 
Eclipse Magnitude = 0.9996             Lunation No. = -2200 
     Eclipse Type = A                  Saros Series = 137 
                                                 ΔT = 10.9 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:   1822 Feb 21   20.000 TDT  (=t0)

  n        x          y         d          l1         l2          μ

  0  -0.1513020  0.6978130 -10.5302897  0.5496120  0.0034570 116.519279 
  1   0.4946110  0.2487663  0.0144780 -0.0001273 -0.0001267  15.002510 
  2  -0.0000051  0.0000326  0.0000020 -0.0000118 -0.0000117   0.000000 
  3  -0.0000071 -0.0000038  0.0000000  0.0000000  0.0000000   0.000000
  
                tan f1 = 0.0047244        tan f2 = 0.0047009 

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 =  20.000 TDT.


Circumstances at Greatest Eclipse:  19:40:29 UT

Latitude:   28.6° N      Sun’s Altitude:    46.1°          Path Width = 1.8 km
Longitude: 132.3° W      Sun’s Azimuth:    149.9°    Central Duration = 00m02s 
