Predictions for Grazing Occultation of SAO 128424, 2009 Jul 13

Grazing Occultation of  128424 K2      Magnitude 6.8 [Red = 6.0]   
Date: 2009 Jul 13 13h 30m,  to  2009 Jul 13 13h 34m

Nominal site altitude 100m

E. Longit.   Latitude     U.T.    Sun  Moon   TanZ   PA    AA      CA
   o  '  "    o  '  "   h  m  s   Alt Alt Az          o     o      o
 173 30  0  -38 54 51  13 29 46       26  59  2.03 325.1 347.80   9.53N
 173 40  0  -38 51 10  13 29 57       26  59  2.01 325.0 347.75   9.59N
 173 50  0  -38 47 28  13 30  8       27  59  2.00 325.0 347.70   9.64N
 174  0  0  -38 43 44  13 30 19       27  59  1.98 324.9 347.65   9.68N
 174 10  0  -38 39 59  13 30 30       27  59  1.97 324.9 347.60   9.73N
 174 20  1  -38 36 12  13 30 41       27  58  1.95 324.8 347.55   9.78N
 174 30  1  -38 32 24  13 30 52       27  58  1.94 324.8 347.51   9.83N
 174 40  1  -38 28 35  13 31  3       27  58  1.93 324.7 347.47   9.87N
 174 50  1  -38 24 44  13 31 15       28  58  1.91 324.7 347.42   9.91N
 175  0  1  -38 20 52  13 31 26       28  58  1.90 324.6 347.37   9.96N
 175 10  1  -38 16 58  13 31 38       28  58  1.88 324.6 347.32  10.01N
 175 20  1  -38 13  3  13 31 49       28  57  1.87 324.5 347.27  10.06N
 175 30  1  -38  9  6  13 32  1       28  57  1.85 324.5 347.22  10.11N
 175 40  2  -38  5  8  13 32 13       29  57  1.84 324.4 347.18  10.16N
 175 50  2  -38  1  9  13 32 25       29  57  1.83 324.4 347.13  10.21N
 176  0  2  -37 57  8  13 32 37       29  57  1.81 324.3 347.08  10.26N
 176 10  2  -37 53  5  13 32 49       29  57  1.80 324.3 347.03  10.31N
 176 20  2  -37 49  1  13 33  1       29  57  1.79 324.2 346.98  10.36N
 176 30  2  -37 44 56  13 33 14       29  56  1.77 324.2 346.93  10.41N
 176 40  2  -37 40 48  13 33 26       30  56  1.76 324.1 346.88  10.46N
 176 50  2  -37 36 40  13 33 39       30  56  1.75 324.1 346.83  10.51N
 177  0  3  -37 32 30  13 33 52       30  56  1.73 324.0 346.78  10.56N

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  3 meters


                Librations  Long -6.11   Lat -6.21
                            P +347.92     D +7.67
      Illumination of moon  68%-
        Elongation of Moon  111
    Vertical Profile Scale  1.97 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.57 deg/min


At longitude 175.33:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
     6.1      5.4   6.8   7.6   8.0   8.3   8.6   8.7
     8.1      5.4   6.8   7.6   8.1   8.4   8.6   8.7
    10.1      5.4   6.9   7.6   8.1   8.4   8.6   8.8
    12.1      5.4   6.9   7.6   8.1   8.4   8.6   8.8
    14.1      5.5   6.9   7.6   8.1   8.4   8.6   8.8
 

Lunar Limb Profile