Predictions for Grazing Occultation of ZC 2622, 2009 May 12

Grazing Occultation of    2622WB4      Magnitude 6.7 [Red = 6.7]  e
   R2622 = V3792 Sagittarii
Date: 2009 May 12 17h 21m,  to  2009 May 12 18h 11m

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  -42 40 53  17 42 13       72 340  0.32 350.3 349.98  11.44N
 143 30  0  -42 35 34  17 43 27       72 337  0.33 350.1 349.80  11.62N
 144  0  0  -42 30  2  17 44 42       72 335  0.33 350.0 349.62  11.80N
 144 30  0  -42 24 16  17 45 57       72 333  0.33 349.8 349.44  11.98N
 145  0  0  -42 18 16  17 47 12       71 330  0.34 349.6 349.25  12.17N
 145 30  0  -42 12  2  17 48 28       71 328  0.34 349.4 349.07  12.35N
 146  0  0  -42  5 33  17 49 43       71 326  0.35 349.2 348.89  12.52N
 146 30  0  -41 58 51  17 50 58       71 324  0.35 349.1 348.72  12.70N
 147  0  0  -41 51 54  17 52 14       70 322  0.36 348.9 348.54  12.88N
 147 30  0  -41 44 43  17 53 29       70 320  0.36 348.7 348.36  13.06N
 148  0  0  -41 37 17  17 54 45       70 318  0.37 348.5 348.19  13.23N
 148 30  0  -41 29 37  17 56  0       69 316  0.37 348.3 348.01  13.41N
 149  0  0  -41 21 43  17 57 16       69 314  0.38 348.2 347.84  13.58N
 149 30  0  -41 13 34  17 58 32       69 312  0.39 348.0 347.67  13.75N
 150  0  0  -41  5 11  17 59 48       68 310  0.40 347.8 347.50  13.92N
 150 30  0  -40 56 33  18  1  3       68 308  0.40 347.7 347.33  14.09N
 151  0  0  -40 47 41  18  2 19       68 306  0.41 347.5 347.17  14.25N

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

      2622 = V3792 Sgr, 6.43 to 6.88V, Type EB/DM, Period 2.248082 days, Phase 45 %
      2622 is double: 
      AB  6.8  8.7 13.5"  64.8  Graze path of B 6.48 km south, and 39.9 secs later compared to A

                Librations  Long +0.67   Lat +3.10
                            P +349.46     D -2.91
      Illumination of moon  88%-
        Elongation of Moon  140
    Vertical Profile Scale  1.95 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.27 deg/min


At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
      CA\Tdia   5    10    15    20    25    30    35
     8.0      4.7   6.1   6.9   7.4   7.8   8.1   8.3
    10.0      4.9   6.3   7.1   7.6   8.0   8.3   8.5
    12.0      5.5   7.0   7.8   8.3   8.7   9.0   9.2
    14.0      5.6   7.1   7.9   8.4   8.8   9.0   9.2
    16.0      5.6   7.1   7.9   8.4   8.8   9.0   9.3

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Lunar Limb Profile - Hobart