Grazing Occultation of 2838cK1 Magnitude 5.6 [Red = 4.9] R2838 = 50 Sagittarii Date: 2010 May 31 9h 16m, to 2010 May 31 10h 15m 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 -121 0 0 34 49 38 9 15 59 29 153 1.82 344.2 351.17 7.37N -120 45 0 34 52 10 9 16 40 29 154 1.81 344.1 351.06 7.48N -120 30 0 34 54 49 9 17 21 29 154 1.80 344.0 350.95 7.59N -120 15 0 34 57 36 9 18 3 29 155 1.79 343.9 350.84 7.70N -120 0 0 35 0 31 9 18 44 29 155 1.79 343.8 350.73 7.81N -119 45 0 35 3 35 9 19 26 29 156 1.78 343.7 350.63 7.92N -119 30 0 35 6 46 9 20 8 29 156 1.77 343.6 350.52 8.03N -119 15 0 35 10 5 9 20 50 30 156 1.77 343.4 350.41 8.14N -119 0 0 35 13 32 9 21 32 30 157 1.76 343.3 350.30 8.25N -118 45 0 35 17 7 9 22 15 30 157 1.75 343.2 350.19 8.35N -118 30 0 35 20 51 9 22 58 30 158 1.75 343.1 350.08 8.46N -118 15 0 35 24 42 9 23 40 30 158 1.74 343.0 349.98 8.57N -118 0 0 35 28 42 9 24 23 30 159 1.74 342.9 349.87 8.68N -117 45 0 35 32 49 9 25 6 30 159 1.73 342.8 349.76 8.78N -117 30 0 35 37 5 9 25 50 30 160 1.73 342.7 349.66 8.89N -117 15 0 35 41 29 9 26 33 30 160 1.73 342.6 349.55 9.00N -117 0 0 35 46 1 9 27 16 30 160 1.72 342.5 349.44 9.10N -116 45 0 35 50 41 9 28 0 30 161 1.72 342.4 349.34 9.21N -116 30 0 35 55 30 9 28 43 30 161 1.72 342.3 349.23 9.31N -116 15 0 36 0 26 9 29 27 30 162 1.71 342.2 349.13 9.41N -116 0 0 36 5 31 9 30 11 30 162 1.71 342.1 349.03 9.52N -115 45 0 36 10 43 9 30 54 30 163 1.71 342.0 348.93 9.62N -115 30 0 36 16 4 9 31 38 30 163 1.71 341.9 348.82 9.72N -115 15 0 36 21 32 9 32 22 30 164 1.71 341.8 348.72 9.82N -115 0 0 36 27 9 9 33 6 30 164 1.71 341.7 348.62 9.92N -114 45 0 36 32 53 9 33 49 30 165 1.71 341.6 348.53 10.02N -114 30 0 36 38 46 9 34 33 30 165 1.71 341.5 348.43 10.12N -114 15 0 36 44 46 9 35 17 30 166 1.71 341.4 348.33 10.21N -114 0 0 36 50 54 9 36 0 30 166 1.71 341.3 348.24 10.31N -113 45 0 36 57 10 9 36 44 30 166 1.71 341.2 348.14 10.40N -113 30 0 37 3 33 9 37 28 30 167 1.71 341.1 348.05 10.50N -113 15 0 37 10 4 9 38 11 30 167 1.72 341.0 347.96 10.59N -113 0 0 37 16 43 9 38 54 30 168 1.72 340.9 347.87 10.68N -112 45 0 37 23 29 9 39 38 30 168 1.72 340.8 347.78 10.77N -112 30 0 37 30 23 9 40 21 30 169 1.72 340.7 347.69 10.86N -112 15 0 37 37 24 9 41 4 30 169 1.73 340.6 347.60 10.94N -112 0 0 37 44 32 9 41 47 30 170 1.73 340.5 347.51 11.03N -111 45 0 37 51 48 9 42 29 30 170 1.74 340.5 347.43 11.11N -111 30 0 37 59 11 9 43 12 30 171 1.74 340.4 347.35 11.20N -111 15 0 38 6 40 9 43 54 30 171 1.74 340.3 347.27 11.28N -111 0 0 38 14 17 9 44 36 30 172 1.75 340.2 347.19 11.36N -110 45 0 38 22 1 9 45 18 30 172 1.76 340.1 347.11 11.44N -110 30 0 38 29 51 9 46 0 30 173 1.76 340.1 347.03 11.51N -110 15 0 38 37 49 9 46 42 29 173 1.77 340.0 346.95 11.59N -110 0 0 38 45 52 9 47 23 29 173 1.77 339.9 346.88 11.66N -109 45 0 38 54 3 9 48 4 29 174 1.78 339.8 346.81 11.73N -109 30 0 39 2 19 9 48 45 29 174 1.79 339.8 346.74 11.81N -109 15 0 39 10 42 9 49 26 29 175 1.80 339.7 346.67 11.87N -109 0 0 39 19 11 9 50 6 29 175 1.81 339.6 346.60 11.94N -108 45 0 39 27 47 9 50 47 29 176 1.81 339.6 346.53 12.01N -108 30 0 39 36 28 9 51 26 29 176 1.82 339.5 346.47 12.07N -108 15 0 39 45 15 9 52 6 29 177 1.83 339.4 346.41 12.13N -108 0 0 39 54 8 9 52 45 28 177 1.84 339.4 346.35 12.20N -107 45 0 40 3 6 9 53 24 28 178 1.85 339.3 346.29 12.26N -107 30 0 40 12 10 9 54 3 28 178 1.86 339.3 346.23 12.31N -107 15 0 40 21 19 9 54 41 28 178 1.88 339.2 346.17 12.37N -107 0 0 40 30 34 9 55 19 28 179 1.89 339.1 346.12 12.42N -106 45 0 40 39 53 9 55 57 28 179 1.90 339.1 346.07 12.48N -106 30 0 40 49 18 9 56 34 28 180 1.91 339.0 346.02 12.53N -106 15 0 40 58 48 9 57 12 27 180 1.92 339.0 345.97 12.58N -106 0 0 41 8 22 9 57 48 27 181 1.94 338.9 345.92 12.62N -105 45 0 41 18 2 9 58 25 27 181 1.95 338.9 345.87 12.67N -105 30 0 41 27 45 9 59 0 27 181 1.97 338.9 345.83 12.71N -105 15 0 41 37 33 9 59 36 27 182 1.98 338.8 345.79 12.76N -105 0 0 41 47 26 10 0 11 27 182 2.00 338.8 345.74 12.80N -104 45 0 41 57 23 10 0 46 26 183 2.01 338.7 345.70 12.84N -104 30 0 42 7 23 10 1 21 26 183 2.03 338.7 345.67 12.87N -104 15 0 42 17 28 10 1 55 26 183 2.04 338.7 345.63 12.91N -104 0 0 42 27 37 10 2 29 26 184 2.06 338.6 345.60 12.95N -103 45 0 42 37 49 10 3 2 26 184 2.08 338.6 345.56 12.98N -103 30 0 42 48 5 10 3 35 -12 26 185 2.10 338.6 345.53 13.01N -103 15 0 42 58 24 10 4 7 -11 25 185 2.11 338.5 345.50 13.04N -103 0 0 43 8 46 10 4 39 -11 25 185 2.13 338.5 345.47 13.07N -102 45 0 43 19 12 10 5 11 -11 25 186 2.15 338.5 345.45 13.10N -102 30 0 43 29 41 10 5 43 -10 25 186 2.17 338.4 345.42 13.12N -102 15 0 43 40 13 10 6 14 -10 25 187 2.19 338.4 345.40 13.15N -102 0 0 43 50 48 10 6 44 -10 24 187 2.21 338.4 345.37 13.17N -101 45 0 44 1 26 10 7 14 -10 24 187 2.24 338.4 345.35 13.19N -101 30 0 44 12 6 10 7 44 -9 24 188 2.26 338.4 345.33 13.21N -101 15 0 44 22 49 10 8 13 -9 24 188 2.28 338.3 345.31 13.23N -101 0 0 44 33 35 10 8 42 -9 23 188 2.31 338.3 345.30 13.24N -100 45 0 44 44 22 10 9 11 -8 23 189 2.33 338.3 345.28 13.26N -100 30 0 44 55 12 10 9 39 -8 23 189 2.35 338.3 345.27 13.27N -100 15 0 45 6 4 10 10 7 -8 23 189 2.38 338.3 345.26 13.29N -100 0 0 45 16 58 10 10 34 -7 23 190 2.41 338.3 345.24 13.30N - 99 45 0 45 27 54 10 11 1 -7 22 190 2.43 338.3 345.23 13.31N - 99 30 0 45 38 52 10 11 27 -7 22 190 2.46 338.2 345.22 13.32N - 99 15 0 45 49 52 10 11 53 -6 22 191 2.49 338.2 345.22 13.32N - 99 0 0 46 0 53 10 12 19 -6 22 191 2.52 338.2 345.21 13.33N - 98 45 0 46 11 56 10 12 44 -6 21 191 2.55 338.2 345.20 13.34N - 98 30 0 46 23 0 10 13 9 -5 21 192 2.58 338.2 345.20 13.34N - 98 15 0 46 34 6 10 13 33 -5 21 192 2.61 338.2 345.20 13.34N - 98 0 0 46 45 13 10 13 57 -5 21 192 2.64 338.2 345.20 13.35N - 97 45 0 46 56 21 10 14 21 -5 21 193 2.67 338.2 345.19 13.35N - 97 30 0 47 7 30 10 14 44 -4 20 193 2.71 338.2 345.19 13.35N - 97 15 0 47 18 40 10 15 7 -4 20 193 2.74 338.2 345.20 13.35N - 97 0 0 47 29 51 10 15 29 -4 20 194 2.78 338.2 345.20 13.34N 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 7 meters 2838 is double: This next pair is not confirmed ** 6.4 6.4 0.10" 90.0** (OCc 220) Graze path of ? 0.12 km north, and 0.3 secs later compared to the primary Librations Long +3.21 Lat -0.11 P +346.60 D -0.38 Illumination of moon 88%- Elongation of Moon 140 Vertical Profile Scale 3.69 km/arcsec at mean distance of moon Horizontal Scale Factor 1.27 deg/min At longitude -109.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 7.9 4.4 5.8 6.5 7.0 7.3 7.5 7.6 9.9 4.6 6.0 6.7 7.2 7.5 7.6 7.8 11.9 5.2 6.6 7.4 7.8 8.1 8.3 8.5 13.9 5.3 6.7 7.4 7.9 8.2 8.4 8.5 15.9 5.3 6.7 7.4 7.9 8.2 8.4 8.5 ------------------------------------------------------------------------------ Double star catalogue details Interferometric catalogue entries 192619.13-214636.1 BD-22 5105 OCC 220 HD 182629 HIP 95564 19263-2147 Date PA Sep M1 M2 1935. V 90. . 0.1 . 6.4 . 6.4 . 1 OCC2002 Occ ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Bakersfield CA -119.0 35.4 16km 9 21 29 Bismarck ND -100.8 46.8 159km 10 9 6 Cheyenne WY -104.8 41.1 64km 10 0 37 Denver CO -105.0 39.8 172km 10 0 13 Des Moines IA -93.6 41.6 662km 10 19 54 Fargo ND -96.8 46.9 59km 10 15 48 Fresno CA -119.8 36.7 180km 9 19 20 Grand Forks ND -97.0 47.9 33km 10 15 26 GrndJunction CO -108.6 39.1 45km 9 51 16 Las Vegas NV -115.1 36.2 23km 9 32 41 Long Beach CA -118.2 33.8 175km 9 23 51 Los Angeles CA -118.2 34.1 143km 9 23 42 midwest grazes -94.1 44.5 394km 10 19 19 MidWest+2 -94.0 44.0 441km 10 19 28 MidWest+6 -95.0 45.0 304km 10 18 14 Pasadena CA -118.1 34.1 136km 9 23 59 Pierre SD -100.3 44.4 51km 10 9 55 RapidCity SD -103.2 44.1 86km 10 4 11 San Bernrdno CA -117.3 34.1 163km 9 26 26 SantaBarbara CA -119.7 34.4 70km 9 19 35