Grazing Occultation of 2268 SB2 Magnitude 4.5 2268 = 2 Scorpii Date 2006 August 31 (Thursday) 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 137 0 0 -36 10 31 11 26 10 46 270 0.95 189.5 178.34 2.99S 137 10 0 -36 8 42 11 26 23 46 270 0.96 189.5 178.30 3.04S 137 20 0 -36 6 51 11 26 37 46 270 0.96 189.4 178.25 3.09S 137 30 0 -36 4 59 11 26 50 46 269 0.97 189.4 178.20 3.14S 137 40 0 -36 3 6 11 27 4 46 269 0.97 189.3 178.15 3.18S 137 50 0 -36 1 12 11 27 17 46 269 0.98 189.3 178.11 3.23S 138 0 0 -35 59 17 11 27 31 45 269 0.99 189.3 178.06 3.28S 138 10 0 -35 57 20 11 27 44 45 269 0.99 189.2 178.01 3.33S 138 20 0 -35 55 22 11 27 57 45 269 1.00 189.2 177.96 3.37S 138 30 0 -35 53 23 11 28 10 45 268 1.00 189.1 177.92 3.42S 138 40 0 -35 51 23 11 28 24 45 268 1.01 189.1 177.87 3.47S 138 50 0 -35 49 22 11 28 37 45 268 1.02 189.0 177.82 3.51S 139 0 0 -35 47 19 11 28 50 44 268 1.02 189.0 177.78 3.56S 139 10 0 -35 45 16 11 29 3 44 268 1.03 188.9 177.73 3.61S 139 20 0 -35 43 11 11 29 16 44 268 1.04 188.9 177.69 3.65S 139 30 0 -35 41 5 11 29 29 44 267 1.04 188.8 177.64 3.70S 139 40 0 -35 38 58 11 29 42 44 267 1.05 188.8 177.59 3.74S 139 50 0 -35 36 49 11 29 55 43 267 1.06 188.7 177.55 3.79S 140 0 0 -35 34 40 11 30 8 43 267 1.06 188.7 177.50 3.83S 140 10 0 -35 32 29 11 30 21 43 267 1.07 188.7 177.46 3.88S 140 20 0 -35 30 17 11 30 34 43 267 1.08 188.6 177.41 3.92S 140 30 0 -35 28 4 11 30 46 43 267 1.08 188.6 177.37 3.97S 140 40 0 -35 25 50 11 30 59 43 266 1.09 188.5 177.32 4.01S 140 50 0 -35 23 35 11 31 12 42 266 1.10 188.5 177.28 4.06S 141 0 0 -35 21 18 11 31 24 42 266 1.10 188.4 177.24 4.10S 141 10 0 -35 19 1 11 31 37 42 266 1.11 188.4 177.19 4.14S 141 20 0 -35 16 42 11 31 49 42 266 1.12 188.3 177.15 4.19S 141 30 0 -35 14 22 11 32 2 42 266 1.13 188.3 177.11 4.23S 141 40 1 -35 12 1 11 32 14 41 266 1.13 188.3 177.06 4.27S 141 50 1 -35 9 39 11 32 27 41 265 1.14 188.2 177.02 4.32S 142 0 1 -35 7 16 11 32 39 41 265 1.15 188.2 176.98 4.36S 142 10 1 -35 4 51 11 32 52 41 265 1.16 188.1 176.93 4.40S 142 20 1 -35 2 26 11 33 4 41 265 1.16 188.1 176.89 4.44S 142 30 1 -34 59 59 11 33 16 41 265 1.17 188.0 176.85 4.49S 142 40 1 -34 57 31 11 33 28 40 265 1.18 188.0 176.81 4.53S 142 50 1 -34 55 3 11 33 41 40 264 1.19 188.0 176.77 4.57S 143 0 1 -34 52 33 11 33 53 40 264 1.19 187.9 176.73 4.61S 143 10 1 -34 50 2 11 34 5 40 264 1.20 187.9 176.68 4.65S 143 20 1 -34 47 29 11 34 17 40 264 1.21 187.8 176.64 4.69S 143 30 1 -34 44 56 11 34 29 39 264 1.22 187.8 176.60 4.74S 143 40 1 -34 42 22 11 34 41 39 264 1.22 187.8 176.56 4.78S 143 50 1 -34 39 46 11 34 53 39 264 1.23 187.7 176.52 4.82S 144 0 1 -34 37 10 11 35 5 39 263 1.24 187.7 176.48 4.86S 144 10 1 -34 34 32 11 35 16 39 263 1.25 187.6 176.44 4.90S 144 20 1 -34 31 53 11 35 28 39 263 1.26 187.6 176.40 4.94S 144 30 1 -34 29 13 11 35 40 38 263 1.26 187.6 176.36 4.98S 144 40 1 -34 26 32 11 35 52 38 263 1.27 187.5 176.32 5.02S 144 50 1 -34 23 50 11 36 3 38 263 1.28 187.5 176.28 5.06S 145 0 1 -34 21 7 11 36 15 38 263 1.29 187.4 176.24 5.10S 145 10 1 -34 18 23 11 36 26 38 263 1.30 187.4 176.20 5.13S 145 20 1 -34 15 38 11 36 38 37 262 1.31 187.4 176.16 5.17S 145 30 1 -34 12 52 11 36 49 37 262 1.31 187.3 176.13 5.21S 145 40 1 -34 10 5 11 37 1 37 262 1.32 187.3 176.09 5.25S 145 50 1 -34 7 16 11 37 12 37 262 1.33 187.2 176.05 5.29S 146 0 1 -34 4 27 11 37 24 37 262 1.34 187.2 176.01 5.33S 146 10 1 -34 1 36 11 37 35 37 262 1.35 187.2 175.97 5.36S 146 20 1 -33 58 45 11 37 46 36 262 1.36 187.1 175.94 5.40S 146 30 1 -33 55 52 11 37 57 36 261 1.37 187.1 175.90 5.44S 146 40 1 -33 52 58 11 38 8 36 261 1.38 187.1 175.86 5.48S 146 50 1 -33 50 4 11 38 19 36 261 1.39 187.0 175.82 5.51S 147 0 1 -33 47 8 11 38 31 36 261 1.40 187.0 175.79 5.55S 147 10 1 -33 44 11 11 38 42 35 261 1.41 186.9 175.75 5.59S 147 20 1 -33 41 14 11 38 52 35 261 1.42 186.9 175.71 5.62S 147 30 1 -33 38 15 11 39 3 35 261 1.42 186.9 175.68 5.66S 147 40 1 -33 35 15 11 39 14 35 261 1.43 186.8 175.64 5.70S 147 50 1 -33 32 14 11 39 25 35 260 1.44 186.8 175.61 5.73S 148 0 1 -33 29 13 11 39 36 35 260 1.45 186.8 175.57 5.77S 148 10 1 -33 26 10 11 39 47 34 260 1.46 186.7 175.53 5.80S 148 20 1 -33 23 6 11 39 57 34 260 1.47 186.7 175.50 5.84S 148 30 1 -33 20 1 11 40 8 34 260 1.48 186.7 175.46 5.87S 148 40 1 -33 16 55 11 40 18 34 260 1.49 186.6 175.43 5.91S 148 50 1 -33 13 48 11 40 29 34 260 1.50 186.6 175.39 5.94S 149 0 1 -33 10 41 11 40 40 33 259 1.52 186.6 175.36 5.98S 149 10 1 -33 7 32 11 40 50 33 259 1.53 186.5 175.33 6.01S 149 20 1 -33 4 22 11 41 0 33 259 1.54 186.5 175.29 6.05S 149 30 1 -33 1 11 11 41 11 33 259 1.55 186.5 175.26 6.08S 149 40 1 -32 58 0 11 41 21 33 259 1.56 186.4 175.22 6.11S 149 50 1 -32 54 47 11 41 31 33 259 1.57 186.4 175.19 6.15S 150 0 1 -32 51 33 11 41 41 32 259 1.58 186.4 175.16 6.18S 150 10 1 -32 48 19 11 41 52 32 259 1.59 186.3 175.12 6.21S 150 20 1 -32 45 3 11 42 2 32 258 1.60 186.3 175.09 6.25S 150 30 1 -32 41 46 11 42 12 32 258 1.61 186.3 175.06 6.28S 150 40 2 -32 38 29 11 42 22 32 258 1.63 186.2 175.03 6.31S 150 50 2 -32 35 10 11 42 32 31 258 1.64 186.2 174.99 6.34S 151 0 2 -32 31 51 11 42 42 31 258 1.65 186.2 174.96 6.38S 151 10 2 -32 28 31 11 42 51 31 258 1.66 186.1 174.93 6.41S 151 20 2 -32 25 9 11 43 1 31 258 1.67 186.1 174.90 6.44S 151 30 2 -32 21 47 11 43 11 31 258 1.69 186.1 174.87 6.47S 151 40 2 -32 18 24 11 43 21 30 258 1.70 186.0 174.84 6.50S 151 50 2 -32 15 0 11 43 30 30 257 1.71 186.0 174.80 6.53S 152 0 2 -32 11 35 11 43 40 30 257 1.72 186.0 174.77 6.56S Path coordinates are referred to WGS84 (as used by GPS). 2268 is triple : 5.6 5.6 0.100" 90.0 : 4.7 7.0 2.1" 269.0 Graze Path of component #2 0.02km South, and 0.2 secs. later cf. primary. Graze Path of component #3 0.47km North, and 4.8 secs. earlier cf. primary. Librations Long -7.90 Lat +6.09 P +173.9 D +5.6 Illumination of moon 45%+ Elongation of Moon 84 Vertical Profile Scale 1.88 km/arcsec at mean distance of moon Horizontal Scale Factor 1.64 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 2.6 4.9 6.3 7.0 7.5 7.8 8.1 8.2 4.6 5.6 7.1 7.9 8.4 8.7 8.9 9.1 6.6 5.7 7.1 7.9 8.4 8.7 9.0 9.1 8.6 5.7 7.1 7.9 8.4 8.7 9.0 9.2 10.6 5.7 7.1 7.9 8.4 8.8 9.0 9.2