Grazing Occultation of Mars Magnitude -1.4 [Red = -1.4] Date: 2025 Jan 14 2h 4m, to 2025 Jan 14 4h 2m 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 -119 0 0 11 7 33.1 2 4 29 -4 1 65 56.01 187.1 176.31 53.42S -118 0 0 11 35 38.3 2 4 34 -5 2 65 26.96 187.1 176.34 53.45S -117 0 0 12 3 36.4 2 4 40 -6 3 65 17.71 187.2 176.37 53.48S -116 0 0 12 31 27.0 2 4 49 -7 4 65 13.16 187.2 176.40 53.51S -115 0 0 12 59 9.3 2 5 1 -8 5 66 10.45 187.2 176.43 53.54S -114 0 0 13 26 42.5 2 5 14 -9 7 66 8.65 187.3 176.47 53.58S -113 0 0 13 54 5.5 2 5 31 -11 8 66 7.37 187.3 176.51 53.61S -112 0 0 14 21 17.5 2 5 50 -12 9 66 6.41 187.3 176.54 53.65S -111 0 0 14 48 17.2 2 6 11 10 67 5.66 187.4 176.59 53.70S -110 0 0 15 15 3.7 2 6 36 11 67 5.07 187.4 176.63 53.74S -109 0 0 15 41 35.9 2 7 2 12 67 4.58 187.5 176.68 53.79S -108 0 0 16 7 52.5 2 7 32 13 68 4.17 187.5 176.73 53.84S -107 0 0 16 33 52.5 2 8 5 15 68 3.82 187.6 176.78 53.89S -106 0 0 16 59 34.8 2 8 40 16 68 3.52 187.6 176.84 53.95S -105 0 0 17 24 57.8 2 9 18 17 69 3.27 187.7 176.90 54.02S -104 0 0 17 50 0.6 2 9 59 18 69 3.04 187.8 176.96 54.08S -103 0 0 18 14 41.8 2 10 42 19 69 2.84 187.8 177.03 54.15S -102 0 0 18 39 0.1 2 11 29 21 70 2.66 187.9 177.10 54.23S -101 0 0 19 2 54.5 2 12 18 22 70 2.50 188.0 177.18 54.31S -100 0 0 19 26 23.5 2 13 11 23 70 2.35 188.1 177.26 54.39S - 99 0 0 19 49 25.8 2 14 6 24 71 2.22 188.1 177.34 54.48S - 98 0 0 20 12 0.2 2 15 5 25 71 2.10 188.2 177.43 54.57S - 97 0 0 20 34 5.3 2 16 6 27 72 1.99 188.3 177.53 54.67S - 96 0 0 20 55 39.8 2 17 11 28 72 1.88 188.4 177.63 54.78S - 95 0 0 21 16 42.4 2 18 18 29 72 1.79 188.5 177.74 54.89S - 94 0 0 21 37 11.8 2 19 29 30 73 1.70 188.7 177.85 55.00S - 93 0 0 21 57 6.5 2 20 43 32 73 1.62 188.8 177.97 55.13S - 92 0 0 22 16 25.4 2 21 59 33 74 1.54 188.9 178.10 55.26S - 91 0 0 22 35 7.1 2 23 19 34 74 1.47 189.0 178.23 55.39S - 90 0 0 22 53 10.2 2 24 42 36 75 1.40 189.2 178.37 55.53S - 89 0 0 23 10 33.4 2 26 8 37 75 1.34 189.3 178.51 55.68S - 88 0 0 23 27 15.5 2 27 38 38 76 1.27 189.5 178.66 55.84S - 87 0 0 23 43 15.1 2 29 10 39 76 1.22 189.6 178.82 56.00S - 86 0 0 23 58 30.9 2 30 46 41 77 1.16 189.8 178.99 56.17S - 85 0 0 24 13 1.6 2 32 24 42 77 1.11 190.0 179.16 56.35S - 84 0 0 24 26 45.9 2 34 6 43 78 1.06 190.1 179.34 56.53S - 83 0 0 24 39 42.4 2 35 51 45 78 1.01 190.3 179.53 56.72S - 82 0 0 24 51 50.0 2 37 39 46 79 0.97 190.5 179.73 56.92S - 81 0 0 25 3 7.1 2 39 31 47 80 0.92 190.7 179.93 57.13S - 80 0 0 25 13 32.7 2 41 25 49 80 0.88 191.0 180.14 57.35S - 79 0 0 25 23 5.2 2 43 23 50 81 0.84 191.2 180.36 57.57S - 78 0 0 25 31 43.5 2 45 24 51 81 0.80 191.4 180.59 57.81S - 77 0 0 25 39 26.1 2 47 28 53 82 0.76 191.6 180.83 58.05S - 76 0 0 25 46 11.8 2 49 36 54 82 0.72 191.9 181.07 58.29S - 75 0 0 25 51 59.2 2 51 46 56 83 0.69 192.1 181.32 58.55S - 74 0 0 25 56 46.8 2 54 0 57 83 0.65 192.4 181.58 58.81S - 73 0 0 26 0 33.4 2 56 17 58 84 0.62 192.7 181.85 59.08S - 72 0 0 26 3 17.5 2 58 37 60 84 0.58 192.9 182.12 59.36S - 71 0 0 26 4 57.7 3 1 0 61 85 0.55 193.2 182.41 59.65S - 70 0 0 26 5 32.6 3 3 27 63 85 0.52 193.5 182.69 59.94S - 69 0 0 26 5 0.6 3 5 56 64 86 0.48 193.8 182.99 60.24S - 68 0 0 26 3 20.4 3 8 29 66 86 0.45 194.1 183.29 60.55S - 67 0 0 26 0 30.3 3 11 5 67 87 0.42 194.4 183.60 60.86S - 66 0 0 25 56 29.0 3 13 44 69 87 0.39 194.7 183.91 61.17S - 65 0 0 25 51 14.8 3 16 25 70 87 0.36 195.0 184.23 61.49S - 64 0 0 25 44 46.2 3 19 10 72 88 0.33 195.4 184.55 61.81S - 63 0 0 25 37 1.7 3 21 58 73 88 0.30 195.7 184.87 62.14S - 62 0 0 25 27 59.7 3 24 48 75 88 0.27 196.0 185.19 62.47S - 61 0 0 25 17 38.7 3 27 41 76 88 0.24 196.3 185.52 62.80S - 60 0 0 25 5 57.2 3 30 37 78 87 0.22 196.7 185.85 63.13S - 59 0 0 24 52 53.7 3 33 35 79 86 0.19 197.0 186.17 63.46S - 58 0 0 24 38 26.9 3 36 36 81 85 0.16 197.3 186.49 63.78S - 57 0 0 24 22 35.3 3 39 39 83 83 0.13 197.6 186.81 64.11S - 56 0 0 24 5 17.7 3 42 44 84 79 0.10 197.9 187.13 64.43S - 55 0 0 23 46 32.9 3 45 51 86 72 0.08 198.3 187.44 64.74S - 54 0 0 23 26 20.1 3 49 0 87 57 0.05 198.6 187.74 65.05S - 53 0 0 23 4 38.3 3 52 10 88 25 0.04 198.8 188.03 65.35S - 52 0 0 22 41 26.9 3 55 22 88 344 0.04 199.1 188.31 65.64S - 51 0 0 22 16 45.7 3 58 35 86 320 0.06 199.4 188.58 65.91S - 50 0 0 21 50 34.4 4 1 48 85 309 0.09 199.7 188.83 66.18S Outer limit - Mars just touches the moon -119 0 0 10 51 9.3 2 4 25 -4 1 65 64.27 187.0 176.25 53.38S -118 0 0 11 19 15.0 2 4 29 -5 2 65 28.74 187.1 176.28 53.41S -117 0 0 11 47 13.7 2 4 35 -6 3 65 18.46 187.1 176.31 53.44S -116 0 0 12 15 5.0 2 4 44 -7 4 65 13.57 187.1 176.34 53.47S -115 0 0 12 42 48.1 2 4 55 -8 5 66 10.71 187.2 176.37 53.51S -114 0 0 13 10 22.1 2 5 9 -9 6 66 8.83 187.2 176.41 53.54S -113 0 0 13 37 46.2 2 5 25 -10 8 66 7.50 187.2 176.44 53.58S -112 0 0 14 4 59.2 2 5 44 -12 9 66 6.51 187.3 176.48 53.62S -111 0 0 14 32 0.2 2 6 5 10 67 5.74 187.3 176.52 53.66S -110 0 0 14 58 48.1 2 6 29 11 67 5.13 187.4 176.57 53.70S -109 0 0 15 25 21.8 2 6 56 12 67 4.63 187.4 176.61 53.75S -108 0 0 15 51 40.1 2 7 25 13 67 4.21 187.5 176.66 53.80S -107 0 0 16 17 41.9 2 7 57 15 68 3.86 187.5 176.72 53.86S -106 0 0 16 43 26.0 2 8 32 16 68 3.55 187.6 176.77 53.92S -105 0 0 17 8 51.1 2 9 10 17 68 3.29 187.6 176.83 53.98S -104 0 0 17 33 56.0 2 9 51 18 69 3.06 187.7 176.90 54.05S -103 0 0 17 58 39.5 2 10 34 19 69 2.86 187.8 176.97 54.12S -102 0 0 18 23 0.3 2 11 21 20 69 2.68 187.8 177.04 54.19S -101 0 0 18 46 57.1 2 12 10 22 70 2.51 187.9 177.12 54.27S -100 0 0 19 10 28.7 2 13 3 23 70 2.37 188.0 177.20 54.36S - 99 0 0 19 33 33.8 2 13 58 24 71 2.23 188.1 177.29 54.45S - 98 0 0 19 56 11.0 2 14 56 25 71 2.11 188.2 177.38 54.54S - 97 0 0 20 18 19.1 2 15 58 27 71 2.00 188.3 177.47 54.64S - 96 0 0 20 39 56.6 2 17 2 28 72 1.89 188.4 177.58 54.75S - 95 0 0 21 1 2.3 2 18 10 29 72 1.80 188.5 177.68 54.86S - 94 0 0 21 21 34.8 2 19 20 30 73 1.71 188.6 177.80 54.98S - 93 0 0 21 41 32.8 2 20 34 32 73 1.62 188.7 177.92 55.10S - 92 0 0 22 0 55.0 2 21 51 33 74 1.55 188.8 178.04 55.23S - 91 0 0 22 19 39.9 2 23 11 34 74 1.47 189.0 178.18 55.37S - 90 0 0 22 37 46.4 2 24 34 35 75 1.41 189.1 178.32 55.51S - 89 0 0 22 55 13.0 2 26 0 37 75 1.34 189.3 178.46 55.66S - 88 0 0 23 11 58.4 2 27 29 38 76 1.28 189.4 178.62 55.82S - 87 0 0 23 28 1.3 2 29 2 39 76 1.22 189.6 178.78 55.98S - 86 0 0 23 43 20.3 2 30 38 41 77 1.17 189.8 178.94 56.15S - 85 0 0 23 57 54.2 2 32 17 42 77 1.11 189.9 179.12 56.33S - 84 0 0 24 11 41.6 2 33 59 43 78 1.06 190.1 179.30 56.52S - 83 0 0 24 24 41.2 2 35 44 45 78 1.01 190.3 179.49 56.71S - 82 0 0 24 36 51.7 2 37 33 46 79 0.97 190.5 179.69 56.91S - 81 0 0 24 48 11.6 2 39 25 47 79 0.92 190.7 179.90 57.13S - 80 0 0 24 58 39.8 2 41 20 49 80 0.88 190.9 180.11 57.34S - 79 0 0 25 8 14.9 2 43 18 50 80 0.84 191.1 180.34 57.57S - 78 0 0 25 16 55.4 2 45 19 51 81 0.80 191.4 180.57 57.81S - 77 0 0 25 24 40.2 2 47 24 53 81 0.76 191.6 180.81 58.05S - 76 0 0 25 31 27.7 2 49 32 54 82 0.72 191.9 181.05 58.30S - 75 0 0 25 37 16.7 2 51 43 56 82 0.69 192.1 181.31 58.56S - 74 0 0 25 42 5.7 2 53 58 57 83 0.65 192.4 181.57 58.82S - 73 0 0 25 45 53.4 2 56 15 58 84 0.62 192.7 181.84 59.10S - 72 0 0 25 48 38.2 2 58 36 60 84 0.58 192.9 182.12 59.38S - 71 0 0 25 50 18.8 3 1 0 61 85 0.55 193.2 182.41 59.67S - 70 0 0 25 50 53.7 3 3 28 63 85 0.52 193.5 182.70 59.97S - 69 0 0 25 50 21.5 3 5 58 64 85 0.48 193.8 183.00 60.27S - 68 0 0 25 48 40.5 3 8 32 66 86 0.45 194.1 183.31 60.58S - 67 0 0 25 45 49.3 3 11 8 67 86 0.42 194.4 183.62 60.89S - 66 0 0 25 41 46.4 3 13 48 69 87 0.39 194.7 183.93 61.21S - 65 0 0 25 36 30.2 3 16 31 70 87 0.36 195.1 184.25 61.54S - 64 0 0 25 29 59.1 3 19 17 72 87 0.33 195.4 184.58 61.87S - 63 0 0 25 22 11.6 3 22 5 73 87 0.30 195.7 184.91 62.20S - 62 0 0 25 13 6.2 3 24 57 75 87 0.27 196.1 185.24 62.53S - 61 0 0 25 2 41.2 3 27 51 76 87 0.24 196.4 185.57 62.86S - 60 0 0 24 50 55.2 3 30 48 78 86 0.22 196.7 185.90 63.20S - 59 0 0 24 37 46.6 3 33 48 79 85 0.19 197.0 186.23 63.53S - 58 0 0 24 23 14.2 3 36 49 81 84 0.16 197.4 186.55 63.86S - 57 0 0 24 7 16.4 3 39 54 83 81 0.13 197.7 186.88 64.19S - 56 0 0 23 49 52.2 3 43 0 84 77 0.10 198.0 187.20 64.52S - 55 0 0 23 31 0.3 3 46 8 86 69 0.08 198.3 187.51 64.83S - 54 0 0 23 10 39.7 3 49 18 87 52 0.05 198.6 187.82 65.14S - 53 0 0 22 48 49.8 3 52 29 88 21 0.04 198.9 188.11 65.45S - 52 0 0 22 25 29.8 3 55 42 87 344 0.05 199.2 188.40 65.74S - 51 0 0 22 0 39.5 3 58 56 86 322 0.07 199.5 188.67 66.02S - 50 0 0 21 34 18.9 4 2 10 85 311 0.09 199.8 188.93 66.28S 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 = 14.57 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 +5.78 Lat -5.89 P +178.77 D -5.57 Illumination of moon 100%- Elongation of Moon 175 Vertical Profile Scale approx. 1.87 km/arcsec at mean distance of moon Horizontal Scale Factor 1.55 deg/min At longitude -84.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 52.5 3.8 5.2 6.0 6.5 6.8 7.0 7.2 54.5 4.0 5.4 6.1 6.6 6.9 7.2 7.3 56.5 4.1 5.5 6.3 6.8 7.1 7.3 7.5 58.5 4.3 5.7 6.5 6.9 7.3 7.5 7.6 60.5 4.3 5.7 6.5 7.0 7.3 7.5 7.7 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s