Predictions for Grazing Occultation of ZC 2157, 2009 Jun 5

Grazing Occultation of    2157 K0      Magnitude 6.1 [Red = 5.6]  s
Date: 2009 Jun 05 13h 25m,  to  2009 Jun 05 13h 37m

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
 115  0  0  -32 37 32  13 24 41       72  59  0.32  25.9   9.60  20.01N
 115 12  0  -32 43 58  13 25 17       72  58  0.32  25.9   9.53  19.94N
 115 24  0  -32 50 21  13 25 54       72  57  0.32  25.8   9.46  19.88N
 115 36  0  -32 56 42  13 26 31       73  56  0.31  25.7   9.40  19.81N
 115 48  0  -33  2 59  13 27  8       73  55  0.31  25.7   9.33  19.74N
 116  0  0  -33  9 13  13 27 44       73  54  0.31  25.6   9.27  19.68N
 116 12  0  -33 15 25  13 28 21       73  53  0.30  25.5   9.20  19.61N
 116 24  0  -33 21 33  13 28 58       73  52  0.30  25.5   9.13  19.54N
 116 36  0  -33 27 38  13 29 34       74  51  0.30  25.4   9.07  19.48N
 116 48  0  -33 33 41  13 30 11       74  49  0.29  25.3   9.00  19.41N
 117  0  0  -33 39 40  13 30 47       74  48  0.29  25.3   8.93  19.34N
 117 12  0  -33 45 36  13 31 24       74  47  0.29  25.2   8.86  19.27N
 117 24  0  -33 51 30  13 32  0       74  46  0.28  25.1   8.79  19.20N
 117 36  0  -33 57 20  13 32 37       74  45  0.28  25.1   8.72  19.13N
 117 48  0  -34  3  7  13 33 13       74  44  0.28  25.0   8.65  19.06N
 118  0  0  -34  8 52  13 33 50       75  43  0.28  24.9   8.58  18.99N
 118 12  0  -34 14 33  13 34 26       75  41  0.27  24.8   8.50  18.92N
 118 24  0  -34 20 11  13 35  2       75  40  0.27  24.8   8.43  18.84N
 118 36  0  -34 25 46  13 35 38       75  39  0.27  24.7   8.36  18.77N
 118 48  0  -34 31 18  13 36 15       75  38  0.27  24.6   8.29  18.70N
 119  0  0  -34 36 47  13 36 51       75  36  0.27  24.6   8.21  18.62N

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

      2157 = NSV 06931, 6.17, range 0.09 to ( 0.09V

                Librations  Long +4.97   Lat +6.08
                            P +9.43     D -4.98
      Illumination of moon  95%+
        Elongation of Moon  155
    Vertical Profile Scale  1.92 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.28 deg/min


At longitude 117.00:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
    15.3      4.6   6.0   6.8   7.3   7.7   7.9   8.1
    17.3      4.9   6.3   7.1   7.6   8.0   8.3   8.5
    19.3      5.2   6.7   7.5   8.0   8.4   8.7   8.9
    21.3      5.5   7.0   7.8   8.3   8.7   9.0   9.2
    23.3      5.5   7.0   7.8   8.3   8.7   9.0   9.2

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Lunar Limb Profile - Perth