Grazing Occultation of Mars Magnitude -0.9 [Red = -0.9] Date: 2024 Dec 18 8h 29m, to 2024 Dec 18 10h 15m Nominal site altitude 0m E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA o ' " o ' " h m s Alt Alt Az o o o Inner limit - Mars fully obscured -130 0 0 68 9 41.6 8 29 24 37 127 1.33 197.8 184.24 7.91S -129 0 0 68 10 44.5 8 30 4 37 128 1.32 197.9 184.33 7.99S -128 0 0 68 11 28.0 8 30 44 38 129 1.30 197.9 184.41 8.08S -127 0 0 68 11 52.3 8 31 25 38 131 1.29 198.0 184.49 8.16S -126 0 0 68 11 57.3 8 32 6 38 132 1.27 198.1 184.58 8.24S -125 0 0 68 11 42.8 8 32 47 39 133 1.26 198.2 184.66 8.33S -124 0 0 68 11 8.9 8 33 28 39 135 1.24 198.3 184.75 8.41S -123 0 0 68 10 15.4 8 34 10 39 136 1.23 198.4 184.83 8.50S -122 0 0 68 9 2.2 8 34 53 39 137 1.21 198.5 184.92 8.58S -121 0 0 68 7 29.2 8 35 35 40 139 1.20 198.5 185.00 8.67S -120 0 0 68 5 36.2 8 36 19 40 140 1.19 198.6 185.09 8.76S -119 0 0 68 3 23.0 8 37 2 40 141 1.17 198.7 185.18 8.84S -118 0 0 68 0 49.5 8 37 46 41 143 1.16 198.8 185.26 8.93S -117 0 0 67 57 55.3 8 38 31 41 144 1.15 198.9 185.35 9.02S -116 0 0 67 54 40.3 8 39 16 41 146 1.14 199.0 185.44 9.11S -115 0 0 67 51 4.2 8 40 2 42 147 1.12 199.1 185.53 9.20S -114 0 0 67 47 6.6 8 40 48 42 148 1.11 199.2 185.62 9.29S -113 0 0 67 42 47.3 8 41 34 42 150 1.10 199.2 185.71 9.38S -112 0 0 67 38 5.8 8 42 22 43 151 1.09 199.3 185.80 9.47S -111 0 0 67 33 1.9 8 43 10 43 153 1.08 199.4 185.90 9.56S -110 0 0 67 27 35.0 8 43 58 43 154 1.07 199.5 185.99 9.66S -109 0 0 67 21 44.9 8 44 48 43 156 1.06 199.6 186.08 9.75S -108 0 0 67 15 31.0 8 45 38 44 157 1.05 199.7 186.18 9.85S -107 0 0 67 8 52.7 8 46 28 44 159 1.04 199.8 186.27 9.94S -106 0 0 67 1 49.7 8 47 20 44 160 1.03 199.9 186.37 10.04S -105 0 0 66 54 21.2 8 48 12 45 162 1.02 200.0 186.47 10.13S -104 0 0 66 46 26.8 8 49 5 45 163 1.01 200.1 186.56 10.23S -103 0 0 66 38 5.8 8 49 59 45 165 1.00 200.2 186.66 10.33S -102 0 0 66 29 17.4 8 50 54 45 166 0.99 200.3 186.76 10.43S -101 0 0 66 20 1.0 8 51 50 46 168 0.98 200.4 186.87 10.53S -100 0 0 66 10 15.9 8 52 47 46 169 0.97 200.5 186.97 10.64S - 99 0 0 66 0 1.2 8 53 45 46 171 0.96 200.6 187.07 10.74S - 98 0 0 65 49 16.0 8 54 44 46 173 0.95 200.7 187.17 10.84S - 97 0 0 65 37 59.5 8 55 44 47 174 0.95 200.8 187.28 10.95S - 96 0 0 65 26 10.7 8 56 45 47 176 0.94 200.9 187.39 11.05S - 95 0 0 65 13 48.7 8 57 47 47 178 0.93 201.0 187.49 11.16S - 94 0 0 65 0 52.4 8 58 51 47 180 0.92 201.1 187.60 11.27S - 93 0 0 64 47 20.6 8 59 56 48 181 0.91 201.3 187.71 11.38S - 92 0 0 64 33 12.3 9 1 2 48 183 0.91 201.4 187.82 11.49S - 91 0 0 64 18 26.2 9 2 10 48 185 0.90 201.5 187.94 11.60S - 90 0 0 64 3 1.1 9 3 19 48 187 0.90 201.6 188.05 11.72S - 89 0 0 63 46 55.6 9 4 30 48 189 0.89 201.7 188.16 11.83S - 88 0 0 63 30 8.2 9 5 42 49 190 0.88 201.8 188.28 11.95S - 87 0 0 63 12 37.6 9 6 56 49 192 0.88 201.9 188.39 12.06S - 86 0 0 62 54 22.2 9 8 12 49 194 0.87 202.1 188.51 12.18S - 85 0 0 62 35 20.5 9 9 29 49 196 0.87 202.2 188.63 12.30S - 84 0 0 62 15 30.7 9 10 48 49 198 0.86 202.3 188.75 12.42S - 83 0 0 61 54 51.3 9 12 9 49 200 0.86 202.4 188.87 12.54S - 82 0 0 61 33 20.3 9 13 33 49 202 0.86 202.5 188.99 12.66S - 81 0 0 61 10 56.2 9 14 58 49 204 0.86 202.7 189.11 12.78S - 80 0 0 60 47 36.9 9 16 25 50 206 0.85 202.8 189.23 12.90S - 79 0 0 60 23 20.8 9 17 54 50 208 0.85 202.9 189.36 13.02S - 78 0 0 59 58 5.6 9 19 26 50 211 0.85 203.0 189.48 13.15S - 77 0 0 59 31 49.7 9 21 0 50 213 0.85 203.1 189.60 13.27S - 76 0 0 59 4 31.1 9 22 36 50 215 0.85 203.3 189.72 13.39S - 75 0 0 58 36 8.1 9 24 14 50 217 0.85 203.4 189.84 13.51S - 74 0 0 58 6 38.6 9 25 55 49 219 0.86 203.5 189.96 13.63S - 73 0 0 57 36 1.1 9 27 39 49 222 0.86 203.6 190.08 13.75S - 72 0 0 57 4 13.9 9 29 24 49 224 0.86 203.7 190.20 13.87S - 71 0 0 56 31 15.5 9 31 12 49 226 0.87 203.9 190.31 13.98S - 70 0 0 55 57 4.7 9 33 3 49 229 0.88 204.0 190.43 14.09S - 69 0 0 55 21 40.6 9 34 56 49 231 0.88 204.1 190.54 14.20S - 68 0 0 54 45 2.3 9 36 51 48 233 0.89 204.2 190.64 14.31S - 67 0 0 54 7 9.7 9 38 48 48 236 0.90 204.3 190.74 14.41S - 66 0 0 53 28 2.8 9 40 48 48 238 0.92 204.4 190.84 14.51S - 65 0 0 52 47 42.2 9 42 49 47 240 0.93 204.5 190.93 14.60S - 64 0 0 52 6 9.1 9 44 53 47 243 0.95 204.6 191.02 14.68S - 63 0 0 51 23 25.3 9 46 57 46 245 0.96 204.6 191.09 14.76S - 62 0 0 50 39 33.1 9 49 3 45 247 0.98 204.7 191.17 14.83S - 61 0 0 49 54 35.8 9 51 11 45 250 1.01 204.8 191.23 14.90S - 60 0 0 49 8 36.9 9 53 18 44 252 1.03 204.8 191.28 14.95S - 59 0 0 48 21 41.1 9 55 27 43 254 1.06 204.9 191.33 14.99S - 58 0 0 47 33 53.8 9 57 35 43 256 1.09 204.9 191.36 15.03S - 57 0 0 46 45 21.0 9 59 43 42 258 1.12 204.9 191.38 15.05S - 56 0 0 45 56 8.9 10 1 50 41 260 1.15 204.9 191.40 15.07S - 55 0 0 45 6 24.8 10 3 56 -12 40 262 1.19 204.9 191.40 15.07S - 54 0 0 44 16 16.0 10 6 1 -10 39 264 1.24 204.9 191.39 15.06S - 53 0 0 43 25 49.9 10 8 3 -9 38 266 1.28 204.9 191.37 15.04S - 52 0 0 42 35 14.4 10 10 3 -8 37 267 1.33 204.9 191.34 15.00S - 51 0 0 41 44 37.3 10 12 1 -6 36 269 1.38 204.8 191.29 14.96S - 50 0 0 40 54 6.1 10 13 55 -5 35 271 1.44 204.8 191.24 14.91S Outer limit - Mars just touches the moon -130 0 0 67 52 13.7 8 29 8 37 126 1.33 197.8 184.23 7.90S -129 0 0 67 53 18.2 8 29 48 37 128 1.31 197.8 184.31 7.98S -128 0 0 67 54 3.3 8 30 29 38 129 1.29 197.9 184.40 8.07S -127 0 0 67 54 28.9 8 31 10 38 130 1.28 198.0 184.48 8.15S -126 0 0 67 54 34.8 8 31 52 38 132 1.26 198.1 184.57 8.24S -125 0 0 67 54 21.2 8 32 34 39 133 1.25 198.2 184.65 8.32S -124 0 0 67 53 47.8 8 33 16 39 134 1.23 198.3 184.74 8.41S -123 0 0 67 52 54.6 8 33 59 39 136 1.22 198.4 184.83 8.50S -122 0 0 67 51 41.5 8 34 42 40 137 1.21 198.4 184.91 8.59S -121 0 0 67 50 8.3 8 35 25 40 138 1.19 198.5 185.00 8.67S -120 0 0 67 48 14.8 8 36 9 40 140 1.18 198.6 185.09 8.76S -119 0 0 67 46 0.9 8 36 53 41 141 1.16 198.7 185.18 8.85S -118 0 0 67 43 26.4 8 37 38 41 143 1.15 198.8 185.27 8.94S -117 0 0 67 40 31.0 8 38 23 41 144 1.14 198.9 185.36 9.03S -116 0 0 67 37 14.5 8 39 9 42 145 1.13 199.0 185.45 9.12S -115 0 0 67 33 36.5 8 39 56 42 147 1.11 199.1 185.54 9.21S -114 0 0 67 29 36.9 8 40 43 42 148 1.10 199.2 185.63 9.31S -113 0 0 67 25 15.2 8 41 30 42 150 1.09 199.3 185.73 9.40S -112 0 0 67 20 31.2 8 42 18 43 151 1.08 199.4 185.82 9.49S -111 0 0 67 15 24.3 8 43 7 43 153 1.07 199.5 185.91 9.59S -110 0 0 67 9 54.3 8 43 56 43 154 1.06 199.5 186.01 9.68S -109 0 0 67 4 0.6 8 44 46 44 155 1.05 199.6 186.11 9.78S -108 0 0 66 57 42.9 8 45 37 44 157 1.04 199.7 186.20 9.87S -107 0 0 66 51 0.6 8 46 29 44 158 1.03 199.8 186.30 9.97S -106 0 0 66 43 53.1 8 47 21 45 160 1.02 199.9 186.40 10.07S -105 0 0 66 36 19.9 8 48 14 45 162 1.01 200.0 186.50 10.17S -104 0 0 66 28 20.4 8 49 8 45 163 1.00 200.1 186.60 10.27S -103 0 0 66 19 53.9 8 50 3 45 165 0.99 200.2 186.70 10.37S -102 0 0 66 10 59.8 8 50 59 46 166 0.98 200.3 186.80 10.47S -101 0 0 66 1 37.3 8 51 56 46 168 0.97 200.4 186.91 10.58S -100 0 0 65 51 45.6 8 52 54 46 169 0.96 200.5 187.01 10.68S - 99 0 0 65 41 24.0 8 53 53 46 171 0.95 200.7 187.11 10.79S - 98 0 0 65 30 31.6 8 54 53 47 173 0.94 200.8 187.22 10.89S - 97 0 0 65 19 7.4 8 55 54 47 174 0.93 200.9 187.33 11.00S - 96 0 0 65 7 10.6 8 56 56 47 176 0.93 201.0 187.44 11.11S - 95 0 0 64 54 40.1 8 57 59 47 178 0.92 201.1 187.55 11.22S - 94 0 0 64 41 34.8 8 59 4 48 180 0.91 201.2 187.66 11.33S - 93 0 0 64 27 53.7 9 0 10 48 181 0.90 201.3 187.77 11.44S - 92 0 0 64 13 35.6 9 1 17 48 183 0.90 201.4 187.88 11.56S - 91 0 0 63 58 39.2 9 2 26 48 185 0.89 201.5 188.00 11.67S - 90 0 0 63 43 3.3 9 3 37 48 187 0.88 201.7 188.11 11.79S - 89 0 0 63 26 46.5 9 4 49 49 189 0.88 201.8 188.23 11.90S - 88 0 0 63 9 47.4 9 6 2 49 191 0.87 201.9 188.35 12.02S - 87 0 0 62 52 4.5 9 7 17 49 192 0.87 202.0 188.47 12.14S - 86 0 0 62 33 36.3 9 8 34 49 194 0.86 202.1 188.59 12.26S - 85 0 0 62 14 21.3 9 9 53 49 196 0.86 202.2 188.71 12.38S - 84 0 0 61 54 17.6 9 11 13 49 198 0.85 202.4 188.83 12.50S - 83 0 0 61 33 23.7 9 12 36 50 200 0.85 202.5 188.95 12.62S - 82 0 0 61 11 37.8 9 14 0 50 202 0.85 202.6 189.07 12.74S - 81 0 0 60 48 58.1 9 15 27 50 205 0.85 202.7 189.20 12.87S - 80 0 0 60 25 22.8 9 16 55 50 207 0.84 202.9 189.32 12.99S - 79 0 0 60 0 50.0 9 18 26 50 209 0.84 203.0 189.44 13.12S - 78 0 0 59 35 17.6 9 19 59 50 211 0.84 203.1 189.57 13.24S - 77 0 0 59 8 43.9 9 21 34 50 213 0.84 203.2 189.69 13.36S - 76 0 0 58 41 7.1 9 23 12 50 215 0.84 203.4 189.81 13.49S - 75 0 0 58 12 25.4 9 24 52 50 218 0.85 203.5 189.94 13.61S - 74 0 0 57 42 36.8 9 26 34 50 220 0.85 203.6 190.06 13.73S - 73 0 0 57 11 39.7 9 28 19 50 222 0.85 203.7 190.18 13.85S - 72 0 0 56 39 32.5 9 30 6 49 225 0.86 203.8 190.30 13.97S - 71 0 0 56 6 14.0 9 31 56 49 227 0.86 204.0 190.41 14.08S - 70 0 0 55 31 42.9 9 33 47 49 229 0.87 204.1 190.53 14.20S - 69 0 0 54 55 58.3 9 35 42 49 232 0.88 204.2 190.64 14.31S - 68 0 0 54 18 59.7 9 37 38 48 234 0.89 204.3 190.74 14.41S - 67 0 0 53 40 46.9 9 39 37 48 236 0.90 204.4 190.84 14.51S - 66 0 0 53 1 20.1 9 41 37 48 239 0.91 204.5 190.94 14.61S - 65 0 0 52 20 40.2 9 43 40 47 241 0.93 204.6 191.03 14.70S - 64 0 0 51 38 48.5 9 45 44 47 243 0.94 204.7 191.11 14.79S - 63 0 0 50 55 46.9 9 47 50 46 246 0.96 204.7 191.19 14.86S - 62 0 0 50 11 38.1 9 49 57 46 248 0.98 204.8 191.26 14.93S - 61 0 0 49 26 25.2 9 52 5 45 250 1.01 204.9 191.32 14.99S - 60 0 0 48 40 12.5 9 54 13 44 252 1.03 204.9 191.37 15.05S - 59 0 0 47 53 4.4 9 56 22 43 255 1.06 205.0 191.42 15.09S - 58 0 0 47 5 6.8 9 58 31 43 257 1.09 205.0 191.45 15.12S - 57 0 0 46 16 25.6 10 0 39 42 259 1.12 205.0 191.47 15.14S - 56 0 0 45 27 7.3 10 2 46 41 261 1.16 205.0 191.48 15.15S - 55 0 0 44 37 19.2 10 4 52 -11 40 263 1.20 205.0 191.48 15.15S - 54 0 0 43 47 8.6 10 6 56 -10 39 264 1.24 205.0 191.47 15.14S - 53 0 0 42 56 43.1 10 8 58 -9 38 266 1.29 205.0 191.44 15.11S - 52 0 0 42 6 10.3 10 10 58 -7 37 268 1.34 205.0 191.41 15.08S - 51 0 0 41 15 38.1 10 12 54 -6 36 269 1.39 204.9 191.36 15.03S - 50 0 0 40 25 13.8 10 14 47 -5 35 271 1.45 204.8 191.30 14.97S Path coordinates are referred to WGS84 (as used by GPS), with the nominal site altitude being referenced to Mean Sea Level. The path is adjusted for the effects of refraction at low moon altitudes. Angular diameter of Mars = 13.25 arcsec Projected diameter of star 11 meters [Estimated] C A S S I N I R E G I O N G R A Z E Librations Long +6.30 Lat -4.89 P +187.53 D -5.46 Illumination of moon 89%- Elongation of Moon 141 Vertical Profile Scale approx. 2.44 km/arcsec at mean distance of moon Horizontal Scale Factor 1.68 deg/min At longitude -90.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 7.7 4.6 6.0 6.8 7.3 7.6 7.8 8.0 9.7 4.6 6.0 6.8 7.3 7.6 7.9 8.0 11.7 5.1 6.6 7.4 7.9 8.2 8.4 8.6 13.7 5.5 6.9 7.7 8.2 8.6 8.8 9.0 15.7 5.5 6.9 7.7 8.2 8.6 8.8 9.0