   Instant of          12:39:37 TDT     JD = 1243779.02800 
Greatest Eclipse:    (=4:0:50 UT)

Gamma = 0.7554             Ephemerides  = VSOP87/ELP2000-82 
Eclipse Magnitude = 0.9480             Lunation No. = -40899 
     Eclipse Type = A                  Saros Series = 37 
                                                 ΔT = 31126.8 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:   -1307 Apr 13   13.000 TDT  (=t0)

  n        x          y         d          l1         l2          μ

  0  -0.2169550  0.7439690  4.2934298  0.5641690  0.0179410  14.769680 
  1   0.4450841  0.2483635  0.0153110 -0.0000635 -0.0000632  15.005430 
  2   0.0000289 -0.0000469 -0.0000010 -0.0000098 -0.0000098   0.000000 
  3  -0.0000050 -0.0000030  0.0000000  0.0000000  0.0000000   0.000000
  
                tan f1 = 0.0046099        tan f2 = 0.0045869 

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 =  13.000 TDT.


Circumstances at Greatest Eclipse:  4:0:50 UT

Latitude:   45.2° N      Sun’s Altitude:    40.7°          Path Width = 283.8 km
Longitude:  88.9° E      Sun’s Azimuth:    136.6°    Central Duration = 04m40s 
