Predictions for Grazing Occultation of ZC1855, 2015 Apr 4

Graze profile
Grazing Occultation of    1855DA0      Magnitude 7.2 [Red = 7.1]   
Date: 2015 Apr 04 12h 26m,  to  2015 Apr 04 13h 28m

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  -15 54 40  12 26 22       49  79  0.87  28.2   3.95 -58.84N
 135 30  0  -16 10  4  12 27 35       50  78  0.84  28.3   4.07 -59.02N
 136  0  0  -16 25 39  12 28 50       51  78  0.82  28.4   4.18 -59.19N
 136 30  0  -16 41 26  12 30  5       51  77  0.80  28.5   4.29 -59.35N
 137  0  0  -16 57 23  12 31 22       52  76  0.78  28.6   4.39 -59.52N
 137 30  0  -17 13 31  12 32 41       53  75  0.76  28.7   4.49 -59.68N
 138  0  0  -17 29 49  12 34  0       53  74  0.74  28.8   4.59 -59.84N
 138 30  0  -17 46 17  12 35 21       54  73  0.73  28.9   4.69 -60.00N
 139  0  0  -18  2 55  12 36 43       55  73  0.71  29.0   4.78 -60.15N
 139 30  0  -18 19 42  12 38  7       55  72  0.69  29.1   4.87 -60.30N
 140  0  0  -18 36 38  12 39 31       56  70  0.67  29.2   4.95 -60.45N
 140 30  0  -18 53 42  12 40 57       57  69  0.66  29.2   5.03 -60.59N
 141  0  0  -19 10 55  12 42 24       57  68  0.64  29.3   5.11 -60.73N
 141 30  0  -19 28 15  12 43 53       58  67  0.62  29.4   5.19 -60.87N
 142  0  0  -19 45 42  12 45 22       59  66  0.61  29.5   5.26 -61.00N
 142 30  0  -20  3 16  12 46 52       59  64  0.59  29.5   5.32 -61.13N
 143  0  0  -20 20 56  12 48 24       60  63  0.58  29.6   5.38 -61.25N
 143 30  0  -20 38 42  12 49 56       61  62  0.57  29.6   5.44 -61.37N
 144  0  0  -20 56 32  12 51 30       61  60  0.55  29.7   5.49 -61.48N
 144 30  0  -21 14 27  12 53  4       62  59  0.54  29.7   5.54 -61.58N
 145  0  0  -21 32 26  12 54 39       62  57  0.53  29.8   5.58 -61.68N
 145 30  0  -21 50 27  12 56 15       63  55  0.52  29.8   5.62 -61.78N
 146  0  0  -22  8 32  12 57 52       63  53  0.50  29.9   5.65 -61.87N
 146 30  0  -22 26 38  12 59 29       64  52  0.49  29.9   5.67 -61.95N
 147  0  0  -22 44 45  13  1  7       64  50  0.48  29.9   5.69 -62.03N
 147 30  0  -23  2 53  13  2 46       65  48  0.47  29.9   5.71 -62.10N
 148  0  0  -23 21  0  13  4 25       65  46  0.47  29.9   5.71 -62.16N
 148 30  0  -23 39  7  13  6  5       65  44  0.46  29.9   5.72 -62.21N
 149  0  0  -23 57 13  13  7 45       66  41  0.45  29.9   5.71 -62.26N
 149 30  0  -24 15 16  13  9 26       66  39  0.44  29.9   5.70 -62.31N
 150  0  0  -24 33 16  13 11  6       66  37  0.44  29.9   5.69 -62.34N
 150 30  0  -24 51 13  13 12 47       67  34  0.43  29.9   5.67 -62.37N
 151  0  0  -25  9  5  13 14 28       67  32  0.43  29.9   5.64 -62.39N
 151 30  0  -25 26 53  13 16  9       67  30  0.42  29.8   5.61 -62.41N
 152  0  0  -25 44 36  13 17 51       67  27  0.42  29.8   5.58 -62.42N
 152 30  0  -26  2 12  13 19 32       67  25  0.42  29.7   5.53 -62.42N
 153  0  0  -26 19 42  13 21 13       67  22  0.42  29.7   5.48 -62.42N
 153 30  0  -26 37  5  13 22 54       67  20  0.42  29.6   5.43 -62.40N
 154  0  0  -26 54 20  13 24 34       67  17  0.42  29.6   5.37 -62.39N
 154 30  0  -27 11 28  13 26 15       67  15  0.42  29.5   5.31 -62.36N
 155  0  0  -27 28 26  13 27 54       67  12  0.42  29.4   5.24 -62.33N

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.

1855 is double: 
  AB 7.2 8.9 5.9" 149.0 (STF1690) Graze path of B 5.54 km north, and 16.2 secs later compared to A

                Librations  Long -2.71   Lat -0.95
                            P +5.63     D +0.94
      Illumination of moon  35%E
        Elongation of Moon  179
    Vertical Profile Scale  2.01 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.23 deg/min


At longitude 145.00:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
   -65.7     10.6  11.3  11.9  12.5  13.1  13.8  14.4
   -63.7     10.6  11.3  11.9  12.5  13.1  13.8  14.4
   -61.7     10.6  11.3  11.9  12.5  13.1  13.8  14.4
   -59.7     10.6  11.3  11.9  12.5  13.1  13.8  14.4
   -57.7     10.6  11.3  11.9  12.5  13.1  13.8  14.4

------------------------------------------------------------------------------
Results of Observer Scan                                    UT
Site                              Long.   Lat.   Dist.    h  m  s
AU Mid                            143.0  -30.6   937km   12 48 24
Brisbane                          153.1  -27.5   103km   13 21 23
Bundaberg                         152.3  -24.8   106km   13 18 58
Rockhampton                       150.5  -23.4   139km   13 12 47

 

Lunar Limb Profile

Lunar Limb Profile