Predictions for Grazing Occultation of SAO 79054, 2009 May 27

Grazing Occultation of   79054wK8      Magnitude 6.9 [Red = 6.1]   
Date: 2009 May 27  8h 17m,  to  2009 May 27  8h 33m

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
 144  0  0  -30 25 43   8 27 49  -12  17 314  3.19  23.2  18.14  19.19N
 144 30  0  -30 44 54   8 28 13       17 313  3.31  23.2  18.08  19.13N
 145  0  0  -31  3 57   8 28 36       16 313  3.44  23.1  18.02  19.07N
 145 30  0  -31 22 54   8 28 58       16 313  3.57  23.0  17.96  19.01N
 146  0  0  -31 41 44   8 29 19       15 312  3.72  23.0  17.89  18.94N
 146 30  0  -32  0 26   8 29 39       14 312  3.87  22.9  17.83  18.88N
 147  0  0  -32 19  1   8 29 59       14 312  4.04  22.8  17.76  18.81N
 147 30  0  -32 37 28   8 30 17       13 311  4.22  22.8  17.70  18.75N
 148  0  0  -32 55 48   8 30 35       13 311  4.41  22.7  17.63  18.68N
 148 30  0  -33 14  0   8 30 52       12 311  4.62  22.6  17.56  18.61N
 149  0  0  -33 32  5   8 31  8       12 310  4.84  22.6  17.50  18.54N
 149 30  0  -33 50  2   8 31 24       11 310  5.09  22.5  17.43  18.48N
 150  0  0  -34  7 52   8 31 39       11 310  5.36  22.4  17.36  18.41N
 150 30  0  -34 25 34   8 31 53       10 310  5.66  22.4  17.29  18.34N
 151  0  0  -34 43  8   8 32  6        9 309  5.99  22.3  17.22  18.27N
 151 30  0  -35  0 35   8 32 19        9 309  6.35  22.2  17.15  18.20N
 152  0  0  -35 17 54   8 32 31        8 309  6.76  22.2  17.08  18.13N
 152 30  0  -35 35  5   8 32 42        8 308  7.22  22.1  17.01  18.06N
 153  0  0  -35 52  8   8 32 53        7 308  7.74  22.0  16.94  17.99N
 153 30  0  -36  9  4   8 33  3        7 308  8.33  21.9  16.87  17.92N
 154  0  0  -36 25 52   8 33 12        6 307  9.02  21.9  16.80  17.85N

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

Projected diameter of star  4 meters

     79054 is double: 
      AB  7.1 11.1 10.1"  68.8  Graze path of B 16.58 km south, and 14.5 secs later compared to A

                Librations  Long +0.97   Lat -2.49
                            P +18.06     D +2.93
      Illumination of moon  11%+
        Elongation of Moon  39
    Vertical Profile Scale  2.22 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
    15.1      6.4   7.9   8.7   9.2   9.6   9.9  10.1
    17.1      6.4   7.9   8.7   9.3   9.7   9.9  10.2
    19.1      6.5   7.9   8.8   9.3   9.7  10.0  10.2
    21.1      6.5   8.0   8.8   9.3   9.7  10.0  10.2
    23.1      6.5   8.0   8.8   9.3   9.7  10.0  10.3

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Lunar Limb Profile - Canberra and Sydney