Predictions for Grazing Occultation of ZC 1493, 2007 Apr 26

Grazing Occultation of    1493 cF7      Magnitude   6.5 
Date   2007 April 26    (Thursday)     Nominal site altitude  0m

E. Longit.   Latitude     U.T.    Sun  Moon   TanZ   PA    WA      CA
   o  '  "    o  '  "   h  m  s   Alt Alt Az          o     o      o
 149  0  0  -22  7  2   9 55 42       55   2  0.71  43.2  24.16  21.66N
 149 10  0  -22 17 49   9 56 20       54   1  0.71  43.2  24.17  21.66N
 149 20  0  -22 28 35   9 56 58       54   1  0.72  43.2  24.17  21.67N
 149 30  0  -22 39 22   9 57 36       54   0  0.72  43.2  24.18  21.67N
 149 40  0  -22 50  9   9 58 13       54 360  0.73  43.2  24.18  21.67N
 149 50  0  -23  0 56   9 58 51       54 359  0.73  43.2  24.18  21.67N
 150  0  0  -23 11 43   9 59 28       54 359  0.74  43.2  24.18  21.67N
 150 10  0  -23 22 29  10  0  5       53 358  0.74  43.2  24.17  21.67N
 150 20  0  -23 33 15  10  0 42       53 358  0.75  43.2  24.17  21.67N
 150 30  0  -23 44  0  10  1 19       53 357  0.75  43.2  24.17  21.66N
 150 40  0  -23 54 45  10  1 56       53 357  0.76  43.2  24.16  21.66N
 150 50  0  -24  5 30  10  2 33       53 356  0.76  43.2  24.15  21.65N
 151  0  0  -24 16 13  10  3  9       52 356  0.77  43.2  24.15  21.64N
 151 10  0  -24 26 56  10  3 45       52 355  0.78  43.2  24.14  21.63N
 151 20  0  -24 37 39  10  4 21       52 355  0.78  43.2  24.13  21.62N
 151 30  0  -24 48 20  10  4 57       52 354  0.79  43.2  24.12  21.61N
 151 40  0  -24 59  0  10  5 33       52 354  0.79  43.2  24.10  21.60N
 151 50  0  -25  9 40  10  6  9       51 353  0.80  43.1  24.09  21.58N
 152  0  0  -25 20 18  10  6 44       51 353  0.80  43.1  24.07  21.57N
 152 10  0  -25 30 55  10  7 19       51 352  0.81  43.1  24.06  21.55N
 152 20  0  -25 41 31  10  7 54       51 352  0.82  43.1  24.04  21.54N
 152 30  0  -25 52  6  10  8 29       51 351  0.82  43.1  24.02  21.52N
 152 40  0  -26  2 40  10  9  4       50 351  0.83  43.1  24.00  21.50N
 152 50  0  -26 13 12  10  9 38       50 350  0.84  43.0  23.98  21.48N
 153  0  0  -26 23 43  10 10 12       50 350  0.84  43.0  23.96  21.46N
 153 10  0  -26 34 12  10 10 46       50 350  0.85  43.0  23.94  21.44N
 153 20  0  -26 44 40  10 11 20       49 349  0.86  43.0  23.92  21.41N

Path coordinates are referred to WGS84 (as used by GPS).

   1493 is double :   6.4  7.3   0.032"  269.4
Graze Path of component #2  0.05km North, and 0.1 secs. earlier cf. primary.

                Librations  Long +5.49   Lat -2.17
                            P +23.7     D +4.5
      Illumination of moon  71%+
        Elongation of Moon  114
    Vertical Profile Scale  2.17 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.27 deg/min

Limiting Magnitudes for various telescope apertures (in mm)
      CA\Tdia  50   100   150   200   250   300   350
    17.4      5.7   7.2   8.0   8.5   8.8   9.1   9.3
    19.4      5.7   7.2   8.0   8.5   8.9   9.1   9.3
    21.4      5.7   7.2   8.0   8.5   8.9   9.1   9.3
    23.4      5.7   7.2   8.0   8.5   8.9   9.1   9.3
    25.4      5.7   7.2   8.0   8.5   8.9   9.1   9.3

Lunar Limb Profile

Lunar Limb Profile