Predictions for Grazing Occultation of ZC 1930, 2007 Aug 18

Grazing Occultation of    1930 cK5      Magnitude   5.3s
 1930 = 68 Virginis                           

Date   2007 August 18    (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
 166 30  0  -45 28  4   6 46 32    -7 47 309  0.93  31.9  11.46   8.10N
 166 40  0  -45 30 45   6 46 49    -8 47 309  0.93  31.9  11.41   8.05N
 166 50  0  -45 33 25   6 47  7    -8 47 309  0.94  31.8  11.35   8.00N
 167  0  0  -45 36  4   6 47 24    -8 47 308  0.94  31.8  11.30   7.94N
 167 10  0  -45 38 41   6 47 41    -8 47 308  0.95  31.7  11.24   7.88N
 167 20  0  -45 41 17   6 47 58    -8 46 308  0.95  31.7  11.19   7.83N
 167 30  0  -45 43 51   6 48 15    -8 46 308  0.96  31.6  11.13   7.77N
 167 40  0  -45 46 23   6 48 32    -9 46 307  0.96  31.5  11.08   7.72N
 167 50  0  -45 48 55   6 48 49    -9 46 307  0.97  31.5  11.02   7.66N
 168  0  0  -45 51 24   6 49  5    -9 46 307  0.97  31.4  10.97   7.61N
 168 10  0  -45 53 53   6 49 22    -9 46 307  0.98  31.4  10.91   7.55N
 168 20  0  -45 56 19   6 49 39    -9 45 306  0.98  31.3  10.86   7.50N
 168 30  0  -45 58 45   6 49 55    -9 45 306  0.99  31.3  10.80   7.45N
 168 40  0  -46  1  9   6 50 11   -10 45 306  0.99  31.2  10.75   7.39N
 168 50  0  -46  3 31   6 50 28   -10 45 306  1.00  31.2  10.69   7.34N
 169  0  0  -46  5 52   6 50 44   -10 45 306  1.01  31.1  10.64   7.28N
 169 10  0  -46  8 12   6 51  0   -10 45 305  1.01  31.1  10.59   7.23N
 169 20  0  -46 10 30   6 51 16   -10 45 305  1.02  31.0  10.53   7.18N
 169 30  0  -46 12 47   6 51 32   -10 44 305  1.02  31.0  10.48   7.12N
 169 40  0  -46 15  3   6 51 48   -11 44 305  1.03  30.9  10.43   7.07N
 169 50  0  -46 17 17   6 52  4   -11 44 304  1.03  30.8  10.37   7.02N
 170  0  0  -46 19 30   6 52 19   -11 44 304  1.04  30.8  10.32   6.96N
 170 10  0  -46 21 41   6 52 35   -11 44 304  1.04  30.7  10.27   6.91N

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

   1930 is double :   6.4  6.4   0.100"   90.0
Graze Path of component #2  0.10km South, and 0.2 secs. later cf. primary.

   1930 = NSV 06244,   5.20 to  5.28 V ,  Type 

                Librations  Long -0.20   Lat +4.72
                            P +10.3     D -4.4
      Illumination of moon  25%+
        Elongation of Moon  60
    Vertical Profile Scale  1.99 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.43 deg/min

Limiting Magnitudes for various telescope apertures (in mm)
      CA\Tdia  50   100   150   200   250   300   350
     2.9      5.2   6.7   7.5   8.0   8.4   8.6   8.9
     4.9      6.0   7.5   8.3   8.9   9.3   9.6   9.8
     6.9      6.0   7.5   8.3   8.9   9.3   9.6   9.8
     8.9      6.0   7.5   8.3   8.9   9.3   9.6   9.8
    10.9      6.0   7.5   8.3   8.9   9.3   9.6   9.8

Lunar Limb Profile