Predictions for Grazing Occultation of ZC 2767, 2009 Feb 20
Grazing Occultation of 2767 K0 Magnitude 6.4 [Red = 5.7]
Date: 2009 Feb 20 15h 57m, to 2009 Feb 20 16h 1m
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 0 0 -35 23 38 15 56 33 20 107 2.76 178.6 183.19 6.33S
173 10 0 -35 27 57 15 56 40 20 107 2.73 178.6 183.18 6.32S
173 20 0 -35 32 16 15 56 47 20 107 2.71 178.5 183.16 6.30S
173 30 0 -35 36 33 15 56 54 20 107 2.68 178.5 183.15 6.29S
173 40 0 -35 40 51 15 57 1 21 107 2.66 178.5 183.13 6.27S
173 50 1 -35 45 7 15 57 8 21 106 2.63 178.5 183.12 6.26S
174 0 1 -35 49 23 15 57 15 21 106 2.61 178.5 183.10 6.24S
174 10 1 -35 53 39 15 57 22 21 106 2.59 178.5 183.08 6.22S
174 20 1 -35 57 53 15 57 29 21 106 2.56 178.5 183.07 6.21S
174 30 1 -36 2 8 15 57 36 21 106 2.54 178.4 183.05 6.19S
174 40 1 -36 6 21 15 57 44 22 106 2.52 178.4 183.03 6.17S
174 50 1 -36 10 34 15 57 51 22 106 2.50 178.4 183.02 6.16S
175 0 1 -36 14 47 15 57 58 22 106 2.47 178.4 183.00 6.14S
175 10 2 -36 18 59 15 58 6 22 105 2.45 178.4 182.98 6.12S
175 20 2 -36 23 10 15 58 13 22 105 2.43 178.3 182.96 6.10S
175 30 2 -36 27 20 15 58 21 23 105 2.41 178.3 182.94 6.08S
175 40 2 -36 31 30 15 58 28 23 105 2.39 178.3 182.92 6.06S
175 50 2 -36 35 40 15 58 36 23 105 2.37 178.3 182.90 6.04S
176 0 2 -36 39 48 15 58 44 23 105 2.35 178.3 182.88 6.02S
176 10 2 -36 43 56 15 58 52 23 105 2.33 178.2 182.86 6.01S
176 20 2 -36 48 4 15 58 59 23 104 2.31 178.2 182.85 5.99S
176 30 3 -36 52 10 15 59 7 24 104 2.29 178.2 182.83 5.97S
176 40 3 -36 56 16 15 59 15 24 104 2.28 178.2 182.81 5.95S
176 50 3 -37 0 22 15 59 23 24 104 2.26 178.2 182.79 5.93S
177 0 3 -37 4 26 15 59 31 24 104 2.24 178.2 182.77 5.91S
177 10 3 -37 8 30 15 59 39 24 104 2.22 178.1 182.75 5.89S
177 20 3 -37 12 34 15 59 47 24 104 2.20 178.1 182.73 5.87S
177 30 3 -37 16 36 15 59 55 25 104 2.19 178.1 182.71 5.85S
177 40 3 -37 20 38 16 0 4 25 103 2.17 178.1 182.69 5.83S
177 50 3 -37 24 39 16 0 12 25 103 2.15 178.1 182.67 5.81S
178 0 4 -37 28 40 16 0 20 25 103 2.14 178.0 182.65 5.79S
178 10 4 -37 32 40 16 0 29 25 103 2.12 178.0 182.63 5.77S
178 20 4 -37 36 39 16 0 37 25 103 2.10 178.0 182.61 5.75S
178 30 4 -37 40 37 16 0 46 26 103 2.09 178.0 182.59 5.73S
178 40 4 -37 44 35 16 0 54 26 103 2.07 178.0 182.57 5.71S
178 50 4 -37 48 32 16 1 3 26 102 2.05 177.9 182.55 5.69S
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 3 meters
Librations Long +0.57 Lat +2.61
P +182.91 D +2.83
Illumination of moon 17%-
Elongation of Moon 48
Vertical Profile Scale 1.97 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.74 deg/min
At longitude 176.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
2.0 5.1 6.6 7.3 7.8 8.2 8.4 8.6
4.0 5.2 6.6 7.4 7.9 8.2 8.5 8.7
6.0 5.2 6.7 7.4 7.9 8.3 8.5 8.7
8.0 6.1 7.6 8.4 9.0 9.3 9.6 9.8
10.0 6.2 7.7 8.5 9.0 9.4 9.7 9.9
Lunar Limb Profile
