Predictions for Grazing Occultation of ZC 771, 2008 Oct 18

Grazing Occultation of     771 SA5      Magnitude   6.1e
Date   2008 October 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
 113  0  0  -23 39 51  16 16 52       18  48  3.17 346.3 352.23   5.30N
 113 10  0  -23 33 37  16 17  1       18  47  3.13 346.2 352.23   5.30N
 113 20  0  -23 27 23  16 17  9       18  47  3.09 346.2 352.23   5.30N
 113 30  0  -23 21  9  16 17 17       18  47  3.05 346.2 352.22   5.31N
 113 40  0  -23 14 55  16 17 26       18  47  3.02 346.2 352.22   5.31N
 113 50  0  -23  8 41  16 17 35       19  47  2.98 346.2 352.22   5.31N
 114  0  0  -23  2 28  16 17 43       19  47  2.94 346.2 352.22   5.31N
 114 10  0  -22 56 14  16 17 52       19  47  2.91 346.2 352.22   5.31N
 114 20  0  -22 50  0  16 18  1       19  47  2.88 346.2 352.22   5.31N
 114 30  0  -22 43 46  16 18 10       19  47  2.84 346.2 352.22   5.31N
 114 40  0  -22 37 32  16 18 19       20  47  2.81 346.2 352.22   5.31N
 114 50  0  -22 31 18  16 18 29       20  46  2.78 346.2 352.22   5.31N
 115  0  0  -22 25  4  16 18 38       20  46  2.75 346.2 352.22   5.31N
 115 10  0  -22 18 50  16 18 48       20  46  2.72 346.2 352.22   5.31N
 115 20  0  -22 12 37  16 18 57       20  46  2.69 346.2 352.22   5.31N
 115 30  0  -22  6 23  16 19  7       21  46  2.66 346.2 352.22   5.31N
 115 40  0  -22  0  9  16 19 17       21  46  2.63 346.2 352.22   5.31N
 115 50  0  -21 53 56  16 19 27       21  46  2.60 346.2 352.22   5.31N
 116  0  0  -21 47 42  16 19 37       21  46  2.57 346.2 352.22   5.31N

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

    771 is triple :   6.1  9.1   0.22"    0.0 :   5.9  8.6  12.4"   24.0
Graze Path of component #2  0.51km South, and 0.1 secs. later cf. primary.
Graze Path of component #3  23.62km South, and 16.5 secs. later cf. primary.

    771 = V1156 Tau,   6.00 to  6.10 Hp,  Type E:

                Librations  Long +2.68   Lat -6.07
                            P +351.9     D +5.9
      Illumination of moon  80%-
        Elongation of Moon  126
    Vertical Profile Scale  2.29 km/arcsec at mean distance of moon
   Horizontal Scale Factor  1.61 deg/min

Limiting Magnitudes for various telescope apertures (in mm)
      CA\Tdia  50   100   150   200   250   300   350
     1.3      2.5   3.9   4.5   4.9   5.1   5.3   5.4
     3.3      4.1   5.5   6.2   6.6   6.9   7.0   7.2
     5.3      4.3   5.7   6.4   6.8   7.1   7.2   7.4
     7.3      4.8   6.1   6.8   7.3   7.5   7.7   7.8
     9.3      5.1   6.5   7.2   7.6   7.9   8.1   8.2

Lunar Limb Profile