Predictions for Grazing Occultation of ZC 2644, 2007 Feb 13

Grazing Occultation of    2644 cF8      Magnitude   6.4 
Date   2007 February 13    (Tuesday)     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
 148  0  0  -33 21 46  17 28 55       22 110  2.46 187.2 188.78  12.81S
 148 10  0  -33 27 33  17 29  3       22 110  2.44 187.2 188.78  12.81S
 148 20  0  -33 33 20  17 29 12       22 110  2.42 187.2 188.77  12.80S
 148 30  0  -33 39  6  17 29 20       23 110  2.39 187.2 188.76  12.79S
 148 40  0  -33 44 52  17 29 29       23 110  2.37 187.2 188.75  12.78S
 148 50  0  -33 50 37  17 29 38       23 110  2.35 187.2 188.74  12.77S
 149  0  0  -33 56 22  17 29 46       23 109  2.33 187.2 188.73  12.76S
 149 10  0  -34  2  7  17 29 55       23 109  2.31 187.2 188.72  12.75S
 149 20  0  -34  7 51  17 30  4       24 109  2.29 187.1 188.71  12.74S
 149 30  0  -34 13 35  17 30 13       24 109  2.27 187.1 188.70  12.73S
 149 40  0  -34 19 18  17 30 22       24 109  2.25 187.1 188.69  12.72S
 149 50  0  -34 25  1  17 30 31       24 109  2.23 187.1 188.68  12.71S
 150  0  0  -34 30 43  17 30 40       24 109  2.21 187.1 188.67  12.70S
 150 10  0  -34 36 25  17 30 49       25 109  2.19 187.1 188.66  12.69S
 150 20  0  -34 42  7  17 30 58       25 108  2.17 187.1 188.65  12.68S
 150 30  0  -34 47 48  17 31  8       25 108  2.15 187.1 188.64  12.67S
 150 40  0  -34 53 28  17 31 17       25 108  2.13 187.1 188.63  12.66S
 150 50  0  -34 59  8  17 31 26       25 108  2.11 187.1 188.62  12.65S

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

   2644 is double :   7.1  7.1   0.100"   90.0
Graze Path of component #2  0.02km South, and 0.2 secs. later cf. primary.

                Librations  Long -5.97   Lat +6.12
                            P +188.0     D +7.2
      Illumination of moon  18%-
        Elongation of Moon  51
    Vertical Profile Scale  2.01 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.87 deg/min

Limiting Magnitudes for various telescope apertures (in mm)
      CA\Tdia  50   100   150   200   250   300   350
     8.7      6.1   7.6   8.4   8.9   9.3   9.6   9.8
    10.7      6.1   7.6   8.4   9.0   9.4   9.6   9.9
    12.7      6.2   7.7   8.5   9.0   9.4   9.7   9.9
    14.7      6.2   7.7   8.5   9.1   9.5   9.8  10.0
    16.7      6.3   7.8   8.6   9.1   9.5   9.8  10.0

Lunar Limb Profile

Lunar Limb Profile