Predictions for Grazing Occultation of SAO 138283, 2009 Aug 22

Grazing Occultation of  138283 M*      Magnitude 7.9 [Red = 7.1]   
Date: 2009 Aug 22  8h 50m,  to  2009 Aug 22  8h 56m

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
 147  0  0  -27 46 15   8 54 52       12 274  4.72 207.8 185.24   4.33S
 147 30  0  -27 47 55   8 54 59       11 273  4.92 207.7 185.14   4.44S
 148  0  0  -27 49 28   8 55  6       11 273  5.13 207.6 185.04   4.54S
 148 30  0  -27 50 54   8 55 12       11 273  5.36 207.5 184.94   4.64S
 149  0  0  -27 52 13   8 55 18       10 273  5.62 207.4 184.84   4.74S
 149 30  0  -27 53 24   8 55 23       10 272  5.89 207.3 184.73   4.85S
 150  0  0  -27 54 28   8 55 28        9 272  6.19 207.2 184.64   4.94S
 150 30  0  -27 55 25   8 55 33        9 272  6.53 207.1 184.55   5.03S
 151  0  0  -27 56 15   8 55 37        8 272  6.89 207.0 184.45   5.13S
 151 30  0  -27 56 58   8 55 41        8 272  7.30 206.9 184.35   5.23S
 152  0  0  -27 57 34   8 55 45        7 271  7.76 206.8 184.26   5.32S
 152 30  0  -27 58  3   8 55 48        7 271  8.28 206.7 184.16   5.42S
 153  0  0  -27 58 26   8 55 51        6 271  8.87 206.6 184.07   5.51S
 153 30  0  -27 58 41   8 55 53        6 271  9.54 206.5 183.98   5.60S
 154  0  0  -27 58 51   8 55 55        6 270 10.32 206.4 183.89   5.69S
 154 30  0  -27 58 53   8 55 57        5 270 11.23 206.3 183.80   5.78S

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  2 meters


                Librations  Long +4.49   Lat +5.55
                            P +186.24     D +5.33
      Illumination of moon  5%+
        Elongation of Moon  26
    Vertical Profile Scale  1.86 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.91 deg/min


At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
    -0.2      7.3   8.7   9.5  10.1  10.4  10.7  10.9
     1.8      7.3   8.7   9.6  10.1  10.5  10.7  11.0
     3.8      7.3   8.8   9.6  10.1  10.5  10.8  11.0
     5.8      7.3   8.8   9.6  10.1  10.5  10.8  11.0
     7.8      7.4   8.8   9.6  10.2  10.5  10.8  11.0


Lunar Limb Profile - Brisbane

Lunar Limb Profile