Predictions for Grazing Occultation of ZC 1859, 2007 July 21

Grazing Occultation of    1859  B9      Magnitude   6.9 
Date   2007 July 21    (Saturday)     Nominal site altitude  0m

E. Longit.   Latitude     U.T.    Sun  Moon   TanZ   PA    WA      CA
   o  '  "    o  '  "   h  m  s   Alt Alt Az          o     o      o
 169 30  0  -42 53 56   5 41 28    -2 56   2  0.67  39.8  18.52  16.51N
 169 40  0  -43  1 24   5 41 56    -3 56   1  0.67  39.7  18.46  16.46N
 169 50  0  -43  8 49   5 42 25    -3 56   1  0.68  39.7  18.41  16.40N
 170  0  0  -43 16 10   5 42 53    -3 56   0  0.68  39.6  18.36  16.35N
 170 10  0  -43 23 29   5 43 21    -3 56 360  0.68  39.6  18.30  16.30N
 170 20  0  -43 30 45   5 43 49    -3 55 359  0.69  39.5  18.25  16.25N
 170 30  0  -43 37 57   5 44 16    -4 55 359  0.69  39.5  18.20  16.19N
 170 40  0  -43 45  7   5 44 44    -4 55 358  0.69  39.4  18.14  16.14N
 170 50  0  -43 52 14   5 45 11    -4 55 358  0.70  39.4  18.09  16.09N
 171  0  0  -43 59 18   5 45 38    -4 55 357  0.70  39.3  18.04  16.03N
 171 10  0  -44  6 19   5 46  5    -5 55 357  0.70  39.2  17.98  15.98N
 171 20  0  -44 13 17   5 46 32    -5 55 356  0.71  39.2  17.93  15.92N
 171 30  0  -44 20 12   5 46 59    -5 55 356  0.71  39.1  17.88  15.87N

Path coordinates are referred to WGS84 (as used by GPS).

                Librations  Long +1.18   Lat +3.75
                            P +17.9     D -2.9
      Illumination of moon  40%+
        Elongation of Moon  79
    Vertical Profile Scale  2.14 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.36 deg/min

Limiting Magnitudes for various telescope apertures (in mm)
      CA\Tdia  50   100   150   200   250   300   350
    11.9      5.8   7.3   8.1   8.6   9.0   9.3   9.5
    13.9      5.8   7.3   8.1   8.6   9.0   9.3   9.5
    15.9      5.8   7.3   8.1   8.6   9.0   9.3   9.5
    17.9      5.8   7.3   8.1   8.6   9.0   9.3   9.5
    19.9      5.8   7.3   8.1   8.6   9.0   9.3   9.5

Lunar Limb Profile