Predictions for Grazing Occultation of ZC 885, 2009 Mar 5
Grazing Occultation of 885wG7 Magnitude 5.6 [Red = 5.1]
Date: 2009 Mar 05 8h 8m, to 2009 Mar 05 8h 15m
Nominal site altitude 100m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
173 30 0 -37 16 48 8 7 38 24 350 2.23 7.3 9.38 7.18N
173 40 0 -37 20 43 8 7 56 24 349 2.24 7.4 9.43 7.23N
173 50 0 -37 24 41 8 8 13 24 349 2.25 7.4 9.47 7.28N
174 0 0 -37 28 42 8 8 31 24 349 2.26 7.5 9.52 7.33N
174 10 0 -37 32 46 8 8 48 24 349 2.27 7.5 9.57 7.38N
174 20 1 -37 36 53 8 9 5 24 348 2.28 7.6 9.62 7.42N
174 30 1 -37 41 3 8 9 22 24 348 2.30 7.6 9.67 7.47N
174 40 1 -37 45 15 8 9 40 23 348 2.31 7.7 9.71 7.52N
174 50 1 -37 49 31 8 9 57 23 348 2.32 7.7 9.76 7.56N
175 0 1 -37 53 49 8 10 14 23 348 2.33 7.8 9.80 7.61N
175 10 1 -37 58 10 8 10 30 23 347 2.34 7.8 9.85 7.65N
175 20 1 -38 2 34 8 10 47 23 347 2.36 7.8 9.89 7.70N
175 30 1 -38 7 0 8 11 4 23 347 2.37 7.9 9.94 7.74N
175 40 2 -38 11 29 8 11 20 23 347 2.38 7.9 9.98 7.79N
175 50 2 -38 16 1 8 11 37 23 347 2.40 8.0 10.02 7.83N
176 0 2 -38 20 36 8 11 53 23 346 2.41 8.0 10.07 7.87N
176 10 2 -38 25 13 8 12 10 22 346 2.42 8.1 10.11 7.91N
176 20 2 -38 29 53 8 12 26 22 346 2.44 8.1 10.15 7.96N
176 30 2 -38 34 35 8 12 42 22 346 2.45 8.1 10.19 8.00N
176 40 2 -38 39 20 8 12 58 22 345 2.47 8.2 10.23 8.04N
176 50 2 -38 44 8 8 13 14 22 345 2.48 8.2 10.27 8.08N
177 0 3 -38 48 58 8 13 30 22 345 2.50 8.3 10.31 8.12N
177 10 3 -38 53 51 8 13 46 22 345 2.52 8.3 10.35 8.16N
177 20 3 -38 58 46 8 14 2 22 345 2.53 8.3 10.39 8.20N
177 30 3 -39 3 43 8 14 17 21 344 2.55 8.4 10.43 8.23N
177 40 3 -39 8 44 8 14 33 21 344 2.57 8.4 10.47 8.27N
177 50 3 -39 13 46 8 14 48 21 344 2.58 8.5 10.50 8.31N
178 0 3 -39 18 51 8 15 3 21 344 2.60 8.5 10.54 8.35N
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
Projected diameter of star 5 meters
885 is double: AB 5.6 11.6 15.3" 230.3
Librations Long -2.14 Lat -5.26
P +10.26 D +5.06
Illumination of moon 61%+
Elongation of Moon 103
Vertical Profile Scale 4.07 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.41 deg/min
At longitude 175.83:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
3.8 4.5 5.9 6.6 7.1 7.3 7.5 7.7
5.8 5.3 6.7 7.5 7.9 8.2 8.4 8.5
7.8 5.3 6.7 7.5 7.9 8.2 8.4 8.6
9.8 5.3 6.8 7.5 7.9 8.2 8.4 8.6
11.8 5.4 6.8 7.5 8.0 8.3 8.5 8.6
Lunar Limb Profile
