Predictions for Grazing Occultation of ZC1678, 2015 Dec 31

Graze profile
Grazing Occultation of    1678 F5      Magnitude 5.8 [Red = 5.5]   
   R1678 = 89 Leonis
Date: 2015 Dec 31 15h 54m,  to  2015 Dec 31 16h 37m

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  -30 21 46  15 53 43       23  72  2.31 201.5 176.68  -1.64S
 135 30  0  -30 27 36  15 54 27       24  71  2.25 201.6 176.80  -1.52S
 136  0  0  -30 33 38  15 55 12       24  71  2.20 201.7 176.92  -1.40S
 136 30  0  -30 39 54  15 55 59       25  70  2.15 201.9 177.03  -1.29S
 137  0  0  -30 46 25  15 56 46       26  70  2.09 202.0 177.15  -1.17S
 137 30  0  -30 53  9  15 57 35       26  69  2.05 202.1 177.27  -1.05S
 138  0  0  -31  0  7  15 58 25       27  69  2.00 202.2 177.39  -0.93S
 138 30  0  -31  7 19  15 59 16       27  68  1.95 202.3 177.52  -0.80S
 139  0  0  -31 14 46  16  0  8       28  67  1.91 202.5 177.64  -0.68S
 139 30  0  -31 22 28  16  1  1       28  67  1.87 202.6 177.76  -0.56S
 140  0  0  -31 30 24  16  1 56       29  66  1.83 202.7 177.88  -0.44S
 140 30  0  -31 38 36  16  2 52       29  66  1.79 202.8 178.01  -0.31S
 141  0  0  -31 47  3  16  3 48       30  65  1.75 203.0 178.13  -0.19S
 141 30  0  -31 55 44  16  4 47       30  64  1.72 203.1 178.26  -0.07S
 142  0  0  -32  4 42  16  5 46       31  64  1.68 203.2 178.38   0.06S
 142 30  0  -32 13 55  16  6 47       31  63  1.65 203.3 178.50   0.18S
 143  0  0  -32 23 23  16  7 48       32  63  1.62 203.5 178.63   0.31S
 143 30  0  -32 33  7  16  8 51       32  62  1.59 203.6 178.75   0.43S
 144  0  0  -32 43  7  16  9 55       33  61  1.56 203.7 178.88   0.56S
 144 30  0  -32 53 22  16 11  0       33  60  1.53 203.8 179.00   0.68S
 145  0  0  -33  3 54  16 12  6       34  60  1.50 203.9 179.12   0.80S
 145 30  0  -33 14 41  16 13 14       34  59  1.48 204.1 179.24   0.92S
 146  0  0  -33 25 45  16 14 22       35  58  1.45 204.2 179.37   1.05S
 146 30  0  -33 37  4  16 15 32       35  57  1.43 204.3 179.49   1.17S
 147  0  0  -33 48 39  16 16 42       35  57  1.40 204.4 179.61   1.29S
 147 30  0  -34  0 30  16 17 54       36  56  1.38 204.5 179.72   1.40S
 148  0  0  -34 12 36  16 19  6       36  55  1.36 204.7 179.84   1.52S
 148 30  0  -34 24 58  16 20 20       37  54  1.34 204.8 179.96   1.64S
 149  0  0  -34 37 36  16 21 34       37  53  1.32 204.9 180.07   1.75S
 149 30  0  -34 50 29  16 22 49       38  52  1.30 205.0 180.18   1.86S
 150  0  0  -35  3 36  16 24  5       38  51  1.28 205.1 180.29   1.97S
 150 30  0  -35 16 59  16 25 22       38  50  1.26 205.2 180.40   2.08S
 151  0  0  -35 30 37  16 26 40       39  49  1.25 205.3 180.51   2.19S
 151 30  0  -35 44 29  16 27 58       39  48  1.23 205.4 180.61   2.29S
 152  0  0  -35 58 35  16 29 17       39  47  1.22 205.5 180.71   2.39S
 152 30  0  -36 12 55  16 30 36       40  46  1.20 205.6 180.81   2.49S
 153  0  0  -36 27 28  16 31 56       40  45  1.19 205.7 180.90   2.58S
 153 30  0  -36 42 14  16 33 17       40  44  1.17 205.8 181.00   2.68S
 154  0  0  -36 57 13  16 34 38       41  43  1.16 205.9 181.09   2.77S
 154 30  0  -37 12 23  16 35 59       41  42  1.15 206.0 181.17   2.85S
 155  0  0  -37 27 46  16 37 21       41  41  1.14 206.1 181.25   2.93S

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  1 meters  [Estimated]


                Librations  Long +2.81   Lat -0.45
                            P +179.11     D -0.14
      Illumination of moon  64%-
        Elongation of Moon  107
    Vertical Profile Scale  2.74 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.41 deg/min


At longitude 145.00:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
    -3.2      2.9   4.3   5.0   5.4   5.7   5.9   6.0
    -1.2      2.9   4.3   5.0   5.4   5.7   5.9   6.0
     0.8      2.9   4.3   5.0   5.4   5.7   5.9   6.1
     2.8      4.7   6.1   6.9   7.4   7.7   7.9   8.1
     4.8      5.0   6.4   7.2   7.7   8.0   8.2   8.4

------------------------------------------------------------------------------
Results of Observer Scan                                    UT
Site                              Long.   Lat.   Dist.    h  m  s
Canberra                          149.2  -35.3    58km   16 21 57
Newcastle                         151.7  -33.0   279km   16 28 32
Sydney                            151.1  -33.8   165km   16 26 50

 

Lunar Limb Profile

Lunar Limb Profile