Predictions for Grazing Occultation of ZC 1178, 2009 Apr 3

Grazing Occultation of    1178SG2      Magnitude 6.3 [Red = 0.0]  S
   R1178 = 82 Geminorum
Date: 2009 Apr 03 11h 35m,  to  2009 Apr 03 11h 54m

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
 143  0  0  -40 33 32  11 46  5       19 327  2.91  26.4  17.41  15.58N
 143 30  0  -40 55  3  11 46 35       18 326  3.00  26.3  17.34  15.51N
 144  0  0  -41 16 25  11 47  4       18 326  3.10  26.3  17.28  15.45N
 144 30  0  -41 37 39  11 47 32       17 325  3.21  26.2  17.21  15.38N
 145  0  0  -41 58 44  11 47 59       17 325  3.32  26.1  17.14  15.31N
 145 30  0  -42 19 40  11 48 25       16 325  3.44  26.0  17.07  15.24N
 146  0  0  -42 40 27  11 48 50       16 324  3.56  26.0  17.00  15.17N
 146 30  0  -43  1  5  11 49 14       15 324  3.70  25.9  16.93  15.10N
 147  0  0  -43 21 33  11 49 37       15 323  3.84  25.8  16.85  15.02N
 147 30  0  -43 41 53  11 50  0       14 323  3.99  25.8  16.78  14.95N
 148  0  0  -44  2  2  11 50 21       14 322  4.15  25.7  16.71  14.88N
 148 30  0  -44 22  3  11 50 41       13 322  4.32  25.6  16.63  14.80N
 149  0  0  -44 41 54  11 51  1       13 321  4.51  25.5  16.56  14.73N
 149 30  0  -45  1 35  11 51 19       12 321  4.71  25.5  16.48  14.65N
 150  0  0  -45 21  7  11 51 37       11 321  4.92  25.4  16.41  14.58N
 150 30  0  -45 40 29  11 51 54       11 320  5.16  25.3  16.33  14.50N
 151  0  0  -45 59 41  11 52 11       10 320  5.41  25.2  16.26  14.43N

Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.

      1178 = NSV 17606, 6.18V, Type VAR:
      1178 is quadruple: 
    AB  6.2  6.6 0.27"  32.6  Graze path of B 0.72 km south, and 0.1 secs later compared to A
    AB-C  6.3 13.5 4.1"  35.5  Graze path of C 10.85 km south, and 1.5 secs later compared to AB
    AB-D  6.3 12.0 67"  25.0  Graze path of D 179.59 km south, and 2.8 secs earlier compared to AB

                Librations  Long +0.50   Lat -2.05
                            P +17.13     D +2.37
      Illumination of moon  60%+
        Elongation of Moon  101
    Vertical Profile Scale  2.58 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.63 deg/min


At longitude 145.00:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
    11.3      5.1   6.5   7.2   7.6   7.9   8.1   8.2
    13.3      5.1   6.5   7.2   7.7   7.9   8.1   8.2
    15.3      5.1   6.5   7.2   7.7   7.9   8.1   8.2
    17.3      5.2   6.5   7.3   7.7   8.0   8.1   8.3
    19.3      5.2   6.6   7.3   7.7   8.0   8.2   8.3
 

Lunar Limb Profile - Hobart