Grazing Occultation of 683 A2 Magnitude 7.4 [Red = 7.4] Date: 2010 Jan 26 5h 51m, to 2010 Jan 26 6h 30m Nominal site altitude 250m E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA o ' " o ' " h m s Alt Alt Az o o o -107 0 0 52 56 34 5 51 11 50 241 0.83 359.4 9.10 5.88N -106 45 0 52 53 44 5 51 28 50 241 0.83 359.5 9.14 5.92N -106 30 0 52 50 52 5 51 46 50 242 0.84 359.5 9.18 5.97N -106 15 0 52 47 58 5 52 3 50 242 0.84 359.5 9.23 6.01N -106 0 0 52 45 2 5 52 21 50 243 0.85 359.6 9.27 6.05N -105 45 0 52 42 4 5 52 38 50 243 0.85 359.6 9.31 6.10N -105 30 0 52 39 4 5 52 56 49 243 0.85 359.7 9.35 6.14N -105 15 0 52 36 2 5 53 13 49 244 0.86 359.7 9.40 6.18N -105 0 0 52 32 57 5 53 31 49 244 0.86 359.8 9.44 6.22N -104 45 0 52 29 51 5 53 48 49 245 0.87 359.8 9.48 6.26N -104 30 0 52 26 42 5 54 6 49 245 0.87 359.8 9.52 6.31N -104 15 0 52 23 31 5 54 23 49 245 0.88 359.9 9.56 6.35N -104 0 0 52 20 18 5 54 40 49 246 0.88 359.9 9.61 6.39N -103 45 0 52 17 4 5 54 58 48 246 0.89 360.0 9.65 6.43N -103 30 0 52 13 46 5 55 15 48 247 0.89 0.0 9.69 6.47N -103 15 0 52 10 27 5 55 33 48 247 0.90 0.0 9.73 6.51N -103 0 0 52 7 6 5 55 50 48 247 0.90 0.1 9.77 6.56N -102 45 0 52 3 42 5 56 7 48 248 0.91 0.1 9.81 6.60N -102 30 0 52 0 17 5 56 25 48 248 0.91 0.2 9.85 6.64N -102 15 0 51 56 49 5 56 42 47 249 0.92 0.2 9.90 6.68N -102 0 0 51 53 19 5 56 59 47 249 0.92 0.2 9.94 6.72N -101 45 0 51 49 47 5 57 17 47 249 0.93 0.3 9.98 6.76N -101 30 0 51 46 13 5 57 34 47 250 0.94 0.3 10.02 6.80N -101 15 0 51 42 37 5 57 51 47 250 0.94 0.4 10.06 6.84N -101 0 0 51 38 59 5 58 9 47 251 0.95 0.4 10.10 6.88N -100 45 0 51 35 18 5 58 26 46 251 0.95 0.5 10.14 6.92N -100 30 0 51 31 35 5 58 43 46 251 0.96 0.5 10.18 6.96N -100 15 0 51 27 51 5 59 0 46 252 0.96 0.5 10.22 7.00N -100 0 0 51 24 4 5 59 18 46 252 0.97 0.6 10.26 7.04N - 99 45 0 51 20 15 5 59 35 46 252 0.98 0.6 10.30 7.08N - 99 30 0 51 16 23 5 59 52 46 253 0.98 0.7 10.34 7.12N - 99 15 0 51 12 30 6 0 9 45 253 0.99 0.7 10.38 7.16N - 99 0 0 51 8 34 6 0 26 45 254 0.99 0.7 10.42 7.20N - 98 45 0 51 4 37 6 0 44 45 254 1.00 0.8 10.46 7.24N - 98 30 0 51 0 37 6 1 1 45 254 1.01 0.8 10.49 7.28N - 98 15 0 50 56 35 6 1 18 45 255 1.01 0.8 10.53 7.32N - 98 0 0 50 52 31 6 1 35 44 255 1.02 0.9 10.57 7.36N - 97 45 0 50 48 24 6 1 52 44 255 1.02 0.9 10.61 7.39N - 97 30 0 50 44 16 6 2 9 44 256 1.03 1.0 10.65 7.43N - 97 15 0 50 40 5 6 2 26 44 256 1.04 1.0 10.69 7.47N - 97 0 0 50 35 52 6 2 43 44 257 1.04 1.0 10.73 7.51N - 96 45 0 50 31 37 6 3 0 44 257 1.05 1.1 10.76 7.55N - 96 30 0 50 27 20 6 3 17 43 257 1.06 1.1 10.80 7.59N - 96 15 0 50 23 1 6 3 34 43 258 1.06 1.2 10.84 7.62N - 96 0 0 50 18 40 6 3 51 43 258 1.07 1.2 10.88 7.66N - 95 45 0 50 14 16 6 4 8 43 258 1.08 1.2 10.91 7.70N - 95 30 0 50 9 50 6 4 25 43 259 1.09 1.3 10.95 7.74N - 95 15 0 50 5 23 6 4 42 42 259 1.09 1.3 10.99 7.77N - 95 0 0 50 0 53 6 4 59 42 259 1.10 1.3 11.03 7.81N - 94 45 0 49 56 20 6 5 16 42 260 1.11 1.4 11.06 7.85N - 94 30 0 49 51 46 6 5 33 42 260 1.12 1.4 11.10 7.88N - 94 15 0 49 47 10 6 5 50 42 260 1.12 1.4 11.14 7.92N - 94 0 0 49 42 31 6 6 6 42 261 1.13 1.5 11.17 7.96N - 93 45 0 49 37 50 6 6 23 41 261 1.14 1.5 11.21 7.99N - 93 30 0 49 33 7 6 6 40 41 261 1.15 1.6 11.24 8.03N - 93 15 0 49 28 22 6 6 57 41 262 1.15 1.6 11.28 8.06N - 93 0 0 49 23 35 6 7 13 41 262 1.16 1.6 11.32 8.10N - 92 45 0 49 18 46 6 7 30 41 262 1.17 1.7 11.35 8.14N - 92 30 0 49 13 54 6 7 47 40 263 1.18 1.7 11.39 8.17N - 92 15 0 49 9 1 6 8 3 40 263 1.19 1.7 11.42 8.21N - 92 0 0 49 4 5 6 8 20 40 263 1.19 1.8 11.46 8.24N - 91 45 0 48 59 7 6 8 36 40 264 1.20 1.8 11.49 8.28N - 91 30 0 48 54 7 6 8 53 40 264 1.21 1.8 11.53 8.31N - 91 15 0 48 49 5 6 9 9 39 264 1.22 1.9 11.56 8.34N - 91 0 0 48 44 1 6 9 26 39 265 1.23 1.9 11.59 8.38N - 90 45 0 48 38 55 6 9 42 39 265 1.24 1.9 11.63 8.41N - 90 30 0 48 33 47 6 9 58 39 265 1.25 2.0 11.66 8.45N - 90 15 0 48 28 36 6 10 15 39 266 1.26 2.0 11.69 8.48N - 90 0 0 48 23 24 6 10 31 38 266 1.27 2.0 11.73 8.51N - 89 45 0 48 18 9 6 10 47 38 266 1.27 2.1 11.76 8.55N - 89 30 0 48 12 52 6 11 3 38 267 1.28 2.1 11.79 8.58N - 89 15 0 48 7 34 6 11 20 38 267 1.29 2.1 11.83 8.61N - 89 0 0 48 2 13 6 11 36 37 267 1.30 2.2 11.86 8.64N - 88 45 0 47 56 50 6 11 52 37 268 1.31 2.2 11.89 8.68N - 88 30 0 47 51 25 6 12 8 37 268 1.32 2.2 11.92 8.71N - 88 15 0 47 45 58 6 12 24 37 268 1.33 2.3 11.96 8.74N - 88 0 0 47 40 29 6 12 40 37 268 1.34 2.3 11.99 8.77N - 87 45 0 47 34 58 6 12 56 36 269 1.35 2.3 12.02 8.80N - 87 30 0 47 29 25 6 13 12 36 269 1.36 2.4 12.05 8.83N - 87 15 0 47 23 49 6 13 28 36 269 1.38 2.4 12.08 8.87N - 87 0 0 47 18 12 6 13 43 36 270 1.39 2.4 12.11 8.90N - 86 45 0 47 12 33 6 13 59 36 270 1.40 2.5 12.14 8.93N - 86 30 0 47 6 52 6 14 15 35 270 1.41 2.5 12.17 8.96N - 86 15 0 47 1 9 6 14 30 35 271 1.42 2.5 12.20 8.99N - 86 0 0 46 55 24 6 14 46 35 271 1.43 2.5 12.23 9.02N - 85 45 0 46 49 37 6 15 2 35 271 1.44 2.6 12.26 9.05N - 85 30 0 46 43 48 6 15 17 35 271 1.45 2.6 12.29 9.08N - 85 15 0 46 37 57 6 15 32 34 272 1.47 2.6 12.32 9.11N - 85 0 0 46 32 4 6 15 48 34 272 1.48 2.7 12.35 9.14N - 84 45 0 46 26 9 6 16 3 34 272 1.49 2.7 12.38 9.16N - 84 30 0 46 20 12 6 16 18 34 273 1.50 2.7 12.41 9.19N - 84 15 0 46 14 14 6 16 34 33 273 1.52 2.7 12.44 9.22N - 84 0 0 46 8 13 6 16 49 33 273 1.53 2.8 12.46 9.25N - 83 45 0 46 2 11 6 17 4 33 273 1.54 2.8 12.49 9.28N - 83 30 0 45 56 6 6 17 19 33 274 1.56 2.8 12.52 9.30N - 83 15 0 45 50 0 6 17 34 33 274 1.57 2.9 12.55 9.33N - 83 0 0 45 43 52 6 17 49 32 274 1.58 2.9 12.57 9.36N - 82 45 0 45 37 42 6 18 4 32 275 1.60 2.9 12.60 9.38N - 82 30 0 45 31 31 6 18 18 32 275 1.61 2.9 12.63 9.41N - 82 15 0 45 25 17 6 18 33 32 275 1.63 3.0 12.65 9.44N - 82 0 0 45 19 2 6 18 48 31 275 1.64 3.0 12.68 9.46N - 81 45 0 45 12 45 6 19 2 31 276 1.65 3.0 12.70 9.49N - 81 30 0 45 6 26 6 19 17 31 276 1.67 3.0 12.73 9.51N - 81 15 0 45 0 6 6 19 31 31 276 1.68 3.1 12.75 9.54N - 81 0 0 44 53 43 6 19 46 30 276 1.70 3.1 12.78 9.57N - 80 45 0 44 47 19 6 20 0 30 277 1.72 3.1 12.80 9.59N - 80 30 0 44 40 54 6 20 14 30 277 1.73 3.1 12.83 9.61N - 80 15 0 44 34 26 6 20 28 30 277 1.75 3.2 12.85 9.64N - 80 0 0 44 27 57 6 20 42 30 277 1.76 3.2 12.88 9.66N - 79 45 0 44 21 27 6 20 56 29 278 1.78 3.2 12.90 9.69N - 79 30 0 44 14 54 6 21 10 29 278 1.80 3.2 12.92 9.71N - 79 15 0 44 8 20 6 21 24 29 278 1.82 3.3 12.95 9.73N - 79 0 0 44 1 45 6 21 38 29 279 1.83 3.3 12.97 9.76N - 78 45 0 43 55 8 6 21 52 28 279 1.85 3.3 12.99 9.78N - 78 30 0 43 48 29 6 22 5 28 279 1.87 3.3 13.02 9.80N - 78 15 0 43 41 49 6 22 19 28 279 1.89 3.3 13.04 9.82N - 78 0 0 43 35 7 6 22 32 28 280 1.91 3.4 13.06 9.84N - 77 45 0 43 28 23 6 22 46 27 280 1.93 3.4 13.08 9.87N - 77 30 0 43 21 39 6 22 59 27 280 1.95 3.4 13.10 9.89N - 77 15 0 43 14 52 6 23 12 27 280 1.97 3.4 13.12 9.91N - 77 0 0 43 8 5 6 23 25 27 281 1.99 3.5 13.14 9.93N - 76 45 0 43 1 15 6 23 38 26 281 2.01 3.5 13.16 9.95N - 76 30 0 42 54 25 6 23 51 26 281 2.03 3.5 13.18 9.97N - 76 15 0 42 47 33 6 24 4 26 281 2.05 3.5 13.20 9.99N - 76 0 0 42 40 39 6 24 17 26 281 2.07 3.5 13.22 10.01N - 75 45 0 42 33 44 6 24 29 25 282 2.10 3.6 13.24 10.03N - 75 30 0 42 26 48 6 24 42 25 282 2.12 3.6 13.26 10.05N - 75 15 0 42 19 51 6 24 54 25 282 2.14 3.6 13.28 10.07N - 75 0 0 42 12 52 6 25 7 25 282 2.17 3.6 13.30 10.09N - 74 45 0 42 5 52 6 25 19 25 283 2.19 3.6 13.32 10.10N - 74 30 0 41 58 50 6 25 31 24 283 2.22 3.6 13.34 10.12N - 74 15 0 41 51 48 6 25 43 24 283 2.24 3.7 13.35 10.14N - 74 0 0 41 44 44 6 25 55 24 283 2.27 3.7 13.37 10.16N - 73 45 0 41 37 39 6 26 7 24 284 2.29 3.7 13.39 10.17N - 73 30 0 41 30 33 6 26 19 23 284 2.32 3.7 13.40 10.19N - 73 15 0 41 23 25 6 26 31 23 284 2.35 3.7 13.42 10.21N - 73 0 0 41 16 17 6 26 42 23 284 2.38 3.7 13.44 10.22N - 72 45 0 41 9 7 6 26 54 23 284 2.41 3.8 13.45 10.24N - 72 30 0 41 1 57 6 27 5 22 285 2.44 3.8 13.47 10.25N - 72 15 0 40 54 45 6 27 16 22 285 2.47 3.8 13.48 10.27N - 72 0 0 40 47 32 6 27 27 22 285 2.50 3.8 13.50 10.29N - 71 45 0 40 40 18 6 27 38 22 285 2.53 3.8 13.51 10.30N - 71 30 0 40 33 3 6 27 49 21 286 2.56 3.8 13.53 10.31N - 71 15 0 40 25 48 6 28 0 21 286 2.60 3.9 13.54 10.33N - 71 0 0 40 18 31 6 28 11 21 286 2.63 3.9 13.56 10.34N - 70 45 0 40 11 13 6 28 21 21 286 2.66 3.9 13.57 10.36N - 70 30 0 40 3 54 6 28 32 20 286 2.70 3.9 13.58 10.37N - 70 15 0 39 56 35 6 28 42 20 287 2.74 3.9 13.60 10.38N - 70 0 0 39 49 14 6 28 53 20 287 2.77 3.9 13.61 10.40N - 69 45 0 39 41 53 6 29 3 20 287 2.81 3.9 13.62 10.41N - 69 30 0 39 34 31 6 29 13 19 287 2.85 3.9 13.63 10.42N - 69 15 0 39 27 8 6 29 23 19 287 2.89 4.0 13.65 10.43N - 69 0 0 39 19 44 6 29 32 19 288 2.93 4.0 13.66 10.44N Path coordinates are referred to WGS84 (as used by GPS), with the nominal site altitude being referenced to Mean Sea Level. Librations Long -7.52 Lat -3.96 P +12.45 D +2.57 Illumination of moon 78%+ Elongation of Moon 124 Vertical Profile Scale 2.13 km/arcsec at mean distance of moon Horizontal Scale Factor 1.79 deg/min At longitude -88.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 4.8 4.6 6.0 6.8 7.3 7.6 7.8 8.0 6.8 4.8 6.2 7.0 7.5 7.8 8.0 8.2 8.8 5.5 6.9 7.7 8.2 8.5 8.7 8.9 10.8 5.5 6.9 7.7 8.2 8.5 8.7 8.9 12.8 5.5 6.9 7.7 8.2 8.5 8.7 8.9 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Belleville ON -77.4 44.2 80km 6 23 5 Buffalo NY -78.9 42.9 104km 6 21 45 Burlington ON -79.8 43.3 100km 6 20 53 Des Moines IA -93.6 41.6 817km 6 6 32 Guelph ON -80.2 43.5 98km 6 20 28 MidWest+6 -95.0 45.0 511km 6 4 59 Mississauga ON -79.6 43.6 70km 6 21 5 NiagaraFalls NY -79.1 43.1 91km 6 21 35 NiagaraFalls ON -79.1 43.1 90km 6 21 34 Oshawa ON -78.9 43.9 7km 6 21 45 Peterborough ON -78.3 44.3 54km 6 22 15 Rochester NY -77.6 43.2 23km 6 22 53 SaultStMarie ON -84.3 46.5 22km 6 16 28 StCatharines ON -79.2 43.2 93km 6 21 24 Thunder Bay ON -89.2 48.4 25km 6 11 20 Toronto ON -79.4 43.7 52km 6 21 17 Winnipeg MB -97.1 49.9 75km 6 2 34