Predictions for Grazing Occultation of SAO164080, 2015 Apr 13

Graze profile
Grazing Occultation of  164080cK4      Magnitude 7.1 [Red = 6.3]   
Date: 2015 Apr 13 17h  1m,  to  2015 Apr 13 17h 13m

Nominal site altitude 50m

E. Longit.   Latitude     U.T.    Sun  Moon   TanZ   PA    AA      CA
   o  '  "    o  '  "   h  m  s   Alt Alt Az          o     o      o
 135  0  0  -24 38 18  17  0 58       10  99  5.41 170.8 188.34   5.69S
 135 30  0  -24 43 52  17  1  6       11  99  5.16 170.8 188.30   5.65S
 136  0  0  -24 49 22  17  1 15       11  98  4.93 170.7 188.26   5.61S
 136 30  0  -24 54 48  17  1 25       12  98  4.72 170.7 188.21   5.56S
 137  0  0  -25  0 10  17  1 35       12  98  4.53 170.6 188.17   5.51S
 137 30  0  -25  5 29  17  1 45       13  98  4.35 170.6 188.12   5.46S
 138  0  0  -25 10 44  17  1 56       13  98  4.18 170.6 188.07   5.42S
 138 30  0  -25 15 55  17  2  7       14  97  4.02 170.5 188.02   5.37S
 139  0  0  -25 21  1  17  2 19       14  97  3.88 170.5 187.97   5.32S
 139 30  0  -25 26  4  17  2 31       15  97  3.74 170.4 187.92   5.26S
 140  0  0  -25 31  3  17  2 44       15  97  3.61 170.3 187.87   5.21S
 140 30  0  -25 35 58  17  2 57       16  96  3.49 170.3 187.81   5.16S
 141  0  0  -25 40 48  17  3 11       16  96  3.38 170.2 187.75   5.09S
 141 30  0  -25 45 34  17  3 25       17  96  3.27 170.2 187.69   5.04S
 142  0  0  -25 50 16  17  3 39       18  96  3.17 170.1 187.63   4.98S
 142 30  0  -25 54 53  17  3 54       18  95  3.08 170.1 187.58   4.92S
 143  0  0  -25 59 26  17  4 10       19  95  2.98 170.0 187.52   4.87S
 143 30  0  -26  3 54  17  4 26       19  95  2.90 169.9 187.46   4.81S
 144  0  0  -26  8 17  17  4 42       20  95  2.82 169.9 187.40   4.75S
 144 30  0  -26 12 36  17  4 59       20  94  2.74 169.8 187.34   4.69S
 145  0  0  -26 16 50  17  5 17       21  94  2.66 169.8 187.28   4.62S
 145 30  0  -26 21  0  17  5 35       21  94  2.59 169.7 187.21   4.56S
 146  0  0  -26 25  4  17  5 53       22  94  2.52 169.6 187.15   4.50S
 146 30  0  -26 29  3  17  6 12       22  93  2.46 169.6 187.09   4.43S
 147  0  0  -26 32 58  17  6 31       23  93  2.39 169.5 187.02   4.37S
 147 30  0  -26 36 47  17  6 51       23  93  2.33 169.4 186.95   4.30S
 148  0  0  -26 40 31  17  7 12       24  92  2.28 169.4 186.88   4.23S
 148 30  0  -26 44 10  17  7 33       24  92  2.22 169.3 186.81   4.16S
 149  0  0  -26 47 43  17  7 54       25  92  2.17 169.2 186.74   4.09S
 149 30  0  -26 51 11  17  8 16       25  92  2.11 169.2 186.67   4.02S
 150  0  0  -26 54 34  17  8 38       26  91  2.06 169.1 186.60   3.95S
 150 30  0  -26 57 51  17  9  1       26  91  2.02 169.0 186.53   3.87S
 151  0  0  -27  1  2  17  9 25       27  91  1.97 168.9 186.45   3.80S
 151 30  0  -27  4  8  17  9 49       27  90  1.93 168.9 186.38   3.72S
 152  0  0  -27  7  8  17 10 13       28  90  1.88 168.8 186.30   3.65S
 152 30  0  -27 10  2  17 10 38       29  90  1.84 168.7 186.22   3.57S
 153  0  0  -27 12 50  17 11  4       29  90  1.80 168.6 186.14   3.49S
 153 30  0  -27 15 32  17 11 30       30  89  1.76 168.5 186.06   3.41S
 154  0  0  -27 18  8  17 11 56       30  89  1.72 168.5 185.98   3.33S
 154 30  0  -27 20 38  17 12 23       31  89  1.68 168.4 185.90   3.24S
 155  0  0  -27 23  2  17 12 51       31  88  1.65 168.3 185.81   3.16S

Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level. The path
is adjusted for the effects of refraction at low moon altitudes.

Projected diameter of star  3 meters  [Estimated]

164080 is double: 
  This next pair is not confirmed
  ** 8.1 8.1 0.10" 107.0 (OCc 914) Graze path of ? 0.09 km north, and 0.2 secs later compared to the primary

    C A S S I N I   R E G I O N   G R A Z E
                Librations  Long -3.85   Lat -5.77
                            P +187.66     D -4.97
      Illumination of moon  32%-
        Elongation of Moon  69
    Vertical Profile Scale  1.89 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.83 deg/min


At longitude 145.00:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
     0.6      4.8   6.2   6.9   7.3   7.6   7.8   8.0
     2.6      4.8   6.2   6.9   7.4   7.7   7.9   8.0
     4.6      4.8   6.2   6.9   7.4   7.7   7.9   8.0
     6.6      5.5   7.0   7.7   8.2   8.6   8.8   9.0
     8.6      5.5   7.0   7.8   8.2   8.6   8.8   9.0

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Results of Observer Scan                                    UT
Site                              Long.   Lat.   Dist.    h  m  s
 

Lunar Limb Profile

Lunar Limb Profile