Predictions for Grazing Occultation of ZC 2678, 2009 Apr 15

Grazing Occultation of    2678 B2      Magnitude 6.6 [Red = 6.6]  v
Date: 2009 Apr 15 18h 44m,  to  2009 Apr 15 19h 40m

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
 140  0  0  -38 37  2  18 58 49       75  32  0.27 350.4 352.08   7.34N
 140 30  0  -38 34 28  19  0 12       75  29  0.26 350.2 351.86   7.57N
 141  0  0  -38 31 40  19  1 34       76  27  0.26 350.0 351.63   7.79N
 141 30  0  -38 28 35  19  2 57       76  24  0.25 349.8 351.41   8.02N
 142  0  0  -38 25 15  19  4 21       76  21  0.24 349.5 351.18   8.24N
 142 30  0  -38 21 40  19  5 44       77  18  0.24 349.3 350.95   8.47N
 143  0  0  -38 17 49  19  7  8       77  15  0.23 349.1 350.73   8.69N
 143 30  0  -38 13 42  19  8 33       77  11  0.23 348.9 350.50   8.92N
 144  0  0  -38  9 19  19  9 57       77   8  0.23 348.6 350.28   9.15N
 144 30  0  -38  4 40  19 11 22       77   4  0.22 348.4 350.05   9.37N
 145  0  0  -37 59 45  19 12 47       77   1  0.22 348.2 349.83   9.60N
 145 30  0  -37 54 34  19 14 13       78 357  0.22 348.0 349.60   9.82N
 146  0  0  -37 49  6  19 15 38       78 354  0.22 347.7 349.38  10.04N
 146 30  0  -37 43 23  19 17  4       78 350  0.22 347.5 349.15  10.27N
 147  0  0  -37 37 23  19 18 30       78 346  0.22 347.3 348.93  10.49N
 147 30  0  -37 31  6  19 19 57       77 343  0.22 347.1 348.71  10.71N
 148  0  0  -37 24 33  19 21 23       77 339  0.23 346.8 348.49  10.93N
 148 30  0  -37 17 43  19 22 50       77 336  0.23 346.6 348.27  11.15N
 149  0  0  -37 10 37  19 24 17       77 332  0.23 346.4 348.05  11.37N
 149 30  0  -37  3 14  19 25 44       77 329  0.24 346.2 347.83  11.59N
 150  0  0  -36 55 34  19 27 11       76 326  0.24 346.0 347.62  11.80N

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

      2678 = V4031 Sgr, 6.52 to 6.67V, Type GCAS

                Librations  Long +0.27   Lat +2.97
                            P +350.05     D -2.71
      Illumination of moon  66%-
        Elongation of Moon  109
    Vertical Profile Scale  1.91 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.20 deg/min

At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
     5.4      5.5   7.0   7.8   8.3   8.7   9.0   9.2
     7.4      5.8   7.3   8.1   8.6   9.0   9.3   9.5
     9.4      5.8   7.3   8.1   8.6   9.0   9.3   9.5
    11.4      5.8   7.3   8.1   8.6   9.0   9.3   9.5
    13.4      5.8   7.3   8.1   8.7   9.0   9.3   9.5

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Lunar Limb Profile - Melbourne