Predictions for Grazing Occultation of ZC 1611, 2009 Jul 25

Grazing Occultation of    1611DG9      Magnitude 5.6 [Red = 0.0]   
   R1611 = 65 Leonis
Date: 2009 Jul 25  8h 45m,  to  2009 Jul 25  9h  7m

Nominal site altitude 5m

E. Longit.   Latitude     U.T.    Sun  Moon   TanZ   PA    AA      CA
   o  '  "    o  '  "   h  m  s   Alt Alt Az          o     o      o
 145  0  0  -31 46 18   8 59 13       27 291  1.95  33.5  11.74   6.93N
 145 30  0  -31 55 11   8 59 44       27 291  2.00  33.4  11.60   6.79N
 146  0  0  -32  3 53   9  0 13       26 290  2.05  33.2  11.46   6.66N
 146 30  0  -32 12 24   9  0 42       26 290  2.10  33.1  11.33   6.52N
 147  0  0  -32 20 44   9  1 11       25 290  2.15  33.0  11.19   6.39N
 147 30  0  -32 28 52   9  1 38       24 289  2.20  32.8  11.06   6.25N
 148  0  0  -32 36 50   9  2  5       24 289  2.26  32.7  10.94   6.13N
 148 30  0  -32 44 36   9  2 31       23 289  2.31  32.6  10.80   6.00N
 149  0  0  -32 52 13   9  2 57       23 288  2.37  32.5  10.67   5.87N
 149 30  0  -32 59 38   9  3 22       22 288  2.44  32.3  10.54   5.74N
 150  0  0  -33  6 54   9  3 46       22 288  2.50  32.2  10.42   5.61N
 150 30  0  -33 13 59   9  4 10       21 287  2.57  32.1  10.29   5.48N
 151  0  0  -33 20 54   9  4 33       21 287  2.63  31.9  10.16   5.36N
 151 30  0  -33 27 40   9  4 55       20 287  2.71  31.8  10.04   5.23N
 152  0  0  -33 34 15   9  5 17       20 286  2.78  31.7   9.91   5.11N
 152 30  0  -33 40 41   9  5 38       19 286  2.86  31.6   9.79   4.99N
 153  0  0  -33 46 58   9  5 59       19 286  2.94  31.5   9.67   4.87N
 153 30  0  -33 53  5   9  6 19       18 285  3.03  31.3   9.55   4.75N
 154  0  0  -33 59  3   9  6 39       18 285  3.12  31.2   9.43   4.63N

Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.

      1611 is double: 
        AB  5.5  9.5 2.8" 107.6  Graze path of B 1.55 km south, and 5.6 secs later compared to A

                Librations  Long +5.22   Lat +4.83
                            P +12.26     D -3.39
      Illumination of moon  14%+
        Elongation of Moon  45
    Vertical Profile Scale  1.89 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.73 deg/min


At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
     3.1      5.4   6.8   7.6   8.1   8.5   8.7   8.9
     5.1      5.4   6.9   7.6   8.2   8.5   8.8   9.0
     7.1      5.4   6.9   7.7   8.2   8.6   8.8   9.0
     9.1      6.4   7.8   8.7   9.2   9.6   9.9  10.2
    11.1      6.4   7.9   8.7   9.3   9.7  10.0  10.2

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Lunar Limb Profile - Sydney