Predictions for Grazing Occultation of ZC 2220, 2009 Feb 16

Grazing Occultation of    2220SA3      Magnitude 7.0 [Red = 0.0]   
Date: 2009 Feb 16 17h 55m,  to  2009 Feb 16 18h 50m

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
 145  0  0  -23  2 18  18 23 40       66  99  0.43 206.4 192.17  12.59S
 145 30  0  -23 21 32  18 25  6       67  98  0.42 206.3 192.03  12.45S
 146  0  0  -23 40 29  18 26 32       68  97  0.40 206.1 191.89  12.30S
 146 30  0  -23 59  9  18 27 57       69  97  0.38 206.0 191.74  12.16S
 147  0  0  -24 17 32  18 29 22       70  96  0.37 205.8 191.58  12.00S
 147 30  0  -24 35 37  18 30 48       71  95  0.35 205.7 191.43  11.84S
 148  0  0  -24 53 25  18 32 13       71  94  0.34 205.5 191.26  11.68S
 148 30  0  -25 10 54  18 33 38       72  93  0.32 205.3 191.09  11.51S
 149  0  0  -25 28  4  18 35  3       73  91  0.31 205.2 190.92  11.34S
 149 30  0  -25 44 56  18 36 27       74  90  0.29 205.0 190.74  11.16S
 150  0  0  -26  1 29  18 37 52       74  89  0.28 204.8 190.56  10.98S
 150 30  0  -26 17 43  18 39 15       75  87  0.26 204.6 190.37  10.79S
 151  0  0  -26 33 37  18 40 39       76  86  0.25 204.4 190.18  10.60S
 151 30  0  -26 49 12  18 42  2       77  84  0.24 204.2 189.99  10.40S
 152  0  0  -27  4 28  18 43 25       77  82  0.22 204.0 189.79  10.20S
 152 30  0  -27 19 23  18 44 48  -11  78  80  0.21 203.8 189.58  10.00S
 153  0  0  -27 33 59  18 46 10  -11  79  78  0.20 203.6 189.38   9.79S
 153 30  0  -27 48 15  18 47 31  -10  80  75  0.19 203.4 189.17   9.58S
 154  0  0  -28  2 12  18 48 53   -9  80  72  0.17 203.2 188.96   9.37S
 154 30  0  -28 15 48  18 50 13   -8  81  69  0.16 203.0 188.74   9.16S

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

      2220 is quadruple: 
           Aa  7.0      0.10" 178.0  Graze path of a 0.16 km north, and 0.1 secs later compared to A
           AC  7.0  8.6 8.0" 288.0  Graze path of C 2.15 km north, and 24.1 secs earlier compared to A
           A-BC  7.0  7.1 9.1" 301.3  Graze path of BC 1.37 km south, and 27.5 secs earlier compared to A

                Librations  Long +5.21   Lat +6.38
                            P +192.91     D +5.39
      Illumination of moon  51%-
        Elongation of Moon  91
    Vertical Profile Scale  1.87 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.26 deg/min


At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
     8.7      5.9   7.4   8.2   8.7   9.1   9.4   9.7
    10.7      5.9   7.4   8.2   8.8   9.2   9.4   9.7
    12.7      5.9   7.4   8.2   8.8   9.2   9.5   9.7
    14.7      5.9   7.4   8.2   8.8   9.2   9.5   9.7
    16.7      5.9   7.4   8.2   8.8   9.2   9.5   9.7

Lunar Limb Profile