Grazing Occultation of Mars Magnitude -1.4 [Red = -1.4] Date: 2025 Jan 14 2h 29m, to 2025 Jan 14 3h 32m 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 45 8 10.6 2 28 41 -11 11 66 4.97 4.1 353.28 -46.89N -129 0 0 45 35 31.1 2 29 1 12 67 4.60 4.2 353.38 -46.99N -128 0 0 46 2 30.7 2 29 22 13 68 4.29 4.3 353.48 -47.10N -127 0 0 46 29 8.4 2 29 45 14 68 4.01 4.4 353.59 -47.22N -126 0 0 46 55 22.9 2 30 10 15 69 3.77 4.5 353.70 -47.33N -125 0 0 47 21 15.0 2 30 35 16 70 3.55 4.6 353.82 -47.46N -124 0 0 47 46 41.3 2 31 2 17 71 3.36 4.8 353.94 -47.59N -123 0 0 48 11 42.4 2 31 30 17 72 3.19 4.9 354.06 -47.72N -122 0 0 48 36 17.4 2 31 59 18 73 3.03 5.0 354.19 -47.85N -121 0 0 49 0 25.6 2 32 29 19 74 2.89 5.1 354.32 -47.99N -120 0 0 49 24 6.5 2 33 1 20 75 2.76 5.3 354.45 -48.14N -119 0 0 49 47 19.2 2 33 33 21 76 2.64 5.4 354.59 -48.29N -118 0 0 50 10 3.8 2 34 6 22 76 2.54 5.6 354.74 -48.44N -117 0 0 50 32 19.5 2 34 40 22 77 2.44 5.7 354.88 -48.60N -116 0 0 50 54 5.9 2 35 16 23 78 2.34 5.8 355.03 -48.75N -115 0 0 51 15 22.7 2 35 52 24 79 2.26 6.0 355.18 -48.92N -114 0 0 51 36 9.5 2 36 28 25 80 2.18 6.2 355.34 -49.08N -113 0 0 51 56 26.1 2 37 6 25 81 2.11 6.3 355.50 -49.25N -112 0 0 52 16 12.3 2 37 44 26 82 2.04 6.5 355.66 -49.43N -111 0 0 52 35 27.8 2 38 23 27 83 1.97 6.6 355.82 -49.60N -110 0 0 52 54 12.5 2 39 3 28 84 1.91 6.8 355.99 -49.78N -109 0 0 53 12 26.4 2 39 43 28 86 1.85 7.0 356.16 -49.96N -108 0 0 53 30 9.4 2 40 24 29 87 1.80 7.1 356.33 -50.14N -107 0 0 53 47 21.5 2 41 5 30 88 1.75 7.3 356.50 -50.33N -106 0 0 54 4 2.7 2 41 47 31 89 1.70 7.5 356.68 -50.52N -105 0 0 54 20 13.1 2 42 30 31 90 1.65 7.7 356.86 -50.71N -104 0 0 54 35 52.6 2 43 13 32 91 1.61 7.9 357.04 -50.90N -103 0 0 54 51 1.4 2 43 56 33 92 1.57 8.0 357.22 -51.10N -102 0 0 55 5 39.6 2 44 40 33 93 1.53 8.2 357.40 -51.29N -101 0 0 55 19 47.4 2 45 24 34 94 1.49 8.4 357.59 -51.49N -100 0 0 55 33 24.8 2 46 9 35 96 1.45 8.6 357.78 -51.69N - 99 0 0 55 46 32.0 2 46 54 35 97 1.42 8.8 357.97 -51.90N - 98 0 0 55 59 9.2 2 47 39 36 98 1.39 9.0 358.16 -52.10N - 97 0 0 56 11 16.6 2 48 25 36 99 1.35 9.2 358.35 -52.31N - 96 0 0 56 22 54.3 2 49 11 37 100 1.32 9.4 358.55 -52.51N - 95 0 0 56 34 2.4 2 49 58 38 102 1.29 9.6 358.74 -52.72N - 94 0 0 56 44 41.4 2 50 45 38 103 1.27 9.7 358.94 -52.94N - 93 0 0 56 54 51.1 2 51 32 39 104 1.24 9.9 359.14 -53.15N - 92 0 0 57 4 32.0 2 52 19 39 105 1.21 10.1 359.34 -53.36N - 91 0 0 57 13 44.0 2 53 7 40 107 1.19 10.3 359.54 -53.58N - 90 0 0 57 22 27.5 2 53 55 41 108 1.16 10.5 359.74 -53.79N - 89 0 0 57 30 42.6 2 54 44 41 109 1.14 10.8 359.94 -54.01N - 88 0 0 57 38 29.4 2 55 32 42 111 1.12 11.0 0.15 -54.23N - 87 0 0 57 45 48.1 2 56 22 42 112 1.10 11.2 0.35 -54.45N - 86 0 0 57 52 38.9 2 57 11 43 113 1.08 11.4 0.56 -54.67N - 85 0 0 57 59 1.9 2 58 0 43 115 1.06 11.6 0.77 -54.90N - 84 0 0 58 4 57.1 2 58 50 44 116 1.04 11.8 0.98 -55.13N - 83 0 0 58 10 24.8 2 59 41 45 117 1.02 12.0 1.19 -55.35N - 82 0 0 58 15 25.0 3 0 31 45 119 1.00 12.2 1.41 -55.58N - 81 0 0 58 19 57.7 3 1 22 46 120 0.98 12.4 1.62 -55.81N - 80 0 0 58 24 3.1 3 2 13 46 122 0.96 12.6 1.84 -56.04N - 79 0 0 58 27 41.2 3 3 5 47 123 0.95 12.9 2.05 -56.28N - 78 0 0 58 30 52.0 3 3 57 47 125 0.93 13.1 2.27 -56.51N - 77 0 0 58 33 35.5 3 4 49 48 126 0.91 13.3 2.49 -56.74N - 76 0 0 58 35 51.8 3 5 42 48 127 0.90 13.5 2.71 -56.98N - 75 0 0 58 37 40.7 3 6 35 49 129 0.88 13.7 2.94 -57.22N - 74 0 0 58 39 2.3 3 7 28 49 131 0.87 14.0 3.16 -57.46N - 73 0 0 58 39 56.5 3 8 22 50 132 0.85 14.2 3.38 -57.70N - 72 0 0 58 40 23.2 3 9 17 50 134 0.84 14.4 3.61 -57.94N - 71 0 0 58 40 22.3 3 10 11 50 135 0.83 14.6 3.84 -58.19N - 70 0 0 58 39 53.6 3 11 7 51 137 0.81 14.9 4.07 -58.44N - 69 0 0 58 38 57.0 3 12 2 51 138 0.80 15.1 4.30 -58.68N - 68 0 0 58 37 32.2 3 12 58 52 140 0.79 15.3 4.53 -58.93N - 67 0 0 58 35 39.1 3 13 55 52 142 0.77 15.6 4.77 -59.19N - 66 0 0 58 33 17.5 3 14 52 53 144 0.76 15.8 5.01 -59.44N - 65 0 0 58 30 27.1 3 15 50 53 145 0.75 16.0 5.24 -59.70N - 64 0 0 58 27 7.5 3 16 49 53 147 0.74 16.3 5.48 -59.95N - 63 0 0 58 23 18.6 3 17 48 54 149 0.73 16.5 5.73 -60.21N - 62 0 0 58 18 59.9 3 18 47 54 151 0.72 16.8 5.97 -60.48N - 61 0 0 58 14 11.0 3 19 47 55 152 0.71 17.0 6.22 -60.74N - 60 0 0 58 8 51.5 3 20 48 55 154 0.70 17.3 6.46 -61.01N - 59 0 0 58 3 1.1 3 21 50 55 156 0.69 17.5 6.71 -61.27N - 58 0 0 57 56 39.1 3 22 52 56 158 0.68 17.8 6.97 -61.54N - 57 0 0 57 49 45.2 3 23 55 56 160 0.67 18.0 7.22 -61.82N - 56 0 0 57 42 18.8 3 24 59 56 162 0.66 18.3 7.48 -62.09N - 55 0 0 57 34 19.2 3 26 4 57 164 0.65 18.5 7.74 -62.37N - 54 0 0 57 25 45.9 3 27 10 57 166 0.65 18.8 8.00 -62.65N - 53 0 0 57 16 38.3 3 28 16 57 168 0.64 19.1 8.26 -62.93N - 52 0 0 57 6 55.6 3 29 23 58 170 0.63 19.3 8.53 -63.22N - 51 0 0 56 56 37.0 3 30 32 58 172 0.62 19.6 8.79 -63.51N - 50 0 0 56 45 42.0 3 31 41 58 175 0.62 19.9 9.06 -63.80N Outer limit - Mars just touches the moon -130 0 0 45 30 9.9 2 29 3 -12 12 66 4.88 4.2 353.39 -46.97N -129 0 0 45 57 26.8 2 29 23 12 67 4.52 4.3 353.49 -47.08N -128 0 0 46 24 22.3 2 29 45 13 68 4.22 4.4 353.59 -47.18N -127 0 0 46 50 55.7 2 30 9 14 69 3.95 4.5 353.70 -47.30N -126 0 0 47 17 6.7 2 30 33 15 69 3.72 4.6 353.81 -47.42N -125 0 0 47 42 52.7 2 30 59 16 70 3.51 4.7 353.92 -47.54N -124 0 0 48 8 13.7 2 31 26 17 71 3.32 4.9 354.04 -47.67N -123 0 0 48 33 9.4 2 31 54 18 72 3.15 5.0 354.17 -47.80N -122 0 0 48 57 38.6 2 32 23 18 73 3.00 5.1 354.29 -47.94N -121 0 0 49 21 40.8 2 32 54 19 74 2.86 5.2 354.43 -48.08N -120 0 0 49 45 15.2 2 33 25 20 75 2.74 5.4 354.56 -48.22N -119 0 0 50 8 21.9 2 33 57 21 76 2.62 5.5 354.70 -48.37N -118 0 0 50 30 59.9 2 34 31 22 77 2.52 5.7 354.84 -48.52N -117 0 0 50 53 8.9 2 35 5 22 78 2.42 5.8 354.99 -48.68N -116 0 0 51 14 48.3 2 35 40 23 79 2.33 6.0 355.14 -48.84N -115 0 0 51 35 58.1 2 36 16 24 80 2.25 6.1 355.29 -49.00N -114 0 0 51 56 37.9 2 36 53 25 81 2.17 6.3 355.44 -49.17N -113 0 0 52 16 47.3 2 37 30 26 82 2.09 6.4 355.60 -49.33N -112 0 0 52 36 26.2 2 38 8 26 83 2.03 6.6 355.76 -49.51N -111 0 0 52 55 34.4 2 38 47 27 84 1.96 6.7 355.92 -49.68N -110 0 0 53 14 11.8 2 39 27 28 85 1.90 6.9 356.09 -49.86N -109 0 0 53 32 18.4 2 40 7 28 86 1.85 7.1 356.26 -50.04N -108 0 0 53 49 54.1 2 40 48 29 87 1.79 7.2 356.43 -50.22N -107 0 0 54 6 58.9 2 41 29 30 88 1.74 7.4 356.60 -50.40N -106 0 0 54 23 32.8 2 42 11 31 89 1.69 7.6 356.78 -50.59N -105 0 0 54 39 35.9 2 42 53 31 90 1.65 7.8 356.95 -50.78N -104 0 0 54 55 8.3 2 43 35 32 91 1.60 7.9 357.13 -50.97N -103 0 0 55 10 10.1 2 44 19 33 92 1.56 8.1 357.31 -51.16N -102 0 0 55 24 41.3 2 45 2 33 94 1.52 8.3 357.49 -51.36N -101 0 0 55 38 42.2 2 45 46 34 95 1.49 8.5 357.68 -51.56N -100 0 0 55 52 12.9 2 46 31 35 96 1.45 8.7 357.86 -51.76N - 99 0 0 56 5 13.5 2 47 15 35 97 1.42 8.9 358.05 -51.96N - 98 0 0 56 17 44.2 2 48 1 36 98 1.38 9.1 358.24 -52.16N - 97 0 0 56 29 45.2 2 48 46 36 99 1.35 9.2 358.43 -52.36N - 96 0 0 56 41 16.7 2 49 32 37 101 1.32 9.4 358.62 -52.57N - 95 0 0 56 52 18.9 2 50 18 38 102 1.29 9.6 358.82 -52.78N - 94 0 0 57 2 52.0 2 51 5 38 103 1.27 9.8 359.01 -52.98N - 93 0 0 57 12 56.1 2 51 51 39 104 1.24 10.0 359.21 -53.19N - 92 0 0 57 22 31.4 2 52 38 39 106 1.22 10.2 359.40 -53.41N - 91 0 0 57 31 38.2 2 53 26 40 107 1.19 10.4 359.60 -53.62N - 90 0 0 57 40 16.5 2 54 13 41 108 1.17 10.6 359.80 -53.83N - 89 0 0 57 48 26.7 2 55 1 41 110 1.14 10.8 0.00 -54.05N - 88 0 0 57 56 8.8 2 55 50 42 111 1.12 11.0 0.21 -54.26N - 87 0 0 58 3 23.0 2 56 38 42 112 1.10 11.2 0.41 -54.48N - 86 0 0 58 10 9.5 2 57 27 43 114 1.08 11.4 0.61 -54.70N - 85 0 0 58 16 28.4 2 58 16 43 115 1.06 11.6 0.82 -54.92N - 84 0 0 58 22 19.8 2 59 6 44 116 1.04 11.8 1.03 -55.15N - 83 0 0 58 27 43.8 2 59 55 44 118 1.02 12.0 1.23 -55.37N - 82 0 0 58 32 40.5 3 0 45 45 119 1.00 12.3 1.44 -55.60N - 81 0 0 58 37 10.1 3 1 36 45 120 0.98 12.5 1.66 -55.82N - 80 0 0 58 41 12.6 3 2 27 46 122 0.97 12.7 1.87 -56.05N - 79 0 0 58 44 47.9 3 3 18 46 123 0.95 12.9 2.08 -56.28N - 78 0 0 58 47 56.2 3 4 9 47 125 0.93 13.1 2.30 -56.51N - 77 0 0 58 50 37.5 3 5 1 47 126 0.92 13.3 2.51 -56.74N - 76 0 0 58 52 51.7 3 5 53 48 128 0.90 13.5 2.73 -56.98N - 75 0 0 58 54 38.9 3 6 45 48 129 0.89 13.8 2.95 -57.21N - 74 0 0 58 55 59.0 3 7 38 49 131 0.87 14.0 3.17 -57.45N - 73 0 0 58 56 51.9 3 8 32 49 132 0.86 14.2 3.39 -57.68N - 72 0 0 58 57 17.5 3 9 25 50 134 0.84 14.4 3.62 -57.92N - 71 0 0 58 57 15.8 3 10 19 50 136 0.83 14.6 3.84 -58.17N - 70 0 0 58 56 46.6 3 11 14 51 137 0.82 14.9 4.07 -58.41N - 69 0 0 58 55 49.8 3 12 9 51 139 0.81 15.1 4.29 -58.65N - 68 0 0 58 54 25.0 3 13 5 52 140 0.79 15.3 4.52 -58.90N - 67 0 0 58 52 32.2 3 14 1 52 142 0.78 15.6 4.75 -59.15N - 66 0 0 58 50 11.1 3 14 57 52 144 0.77 15.8 4.99 -59.40N - 65 0 0 58 47 21.5 3 15 54 53 145 0.76 16.0 5.22 -59.65N - 64 0 0 58 44 3.1 3 16 52 53 147 0.75 16.3 5.46 -59.90N - 63 0 0 58 40 15.5 3 17 50 54 149 0.74 16.5 5.70 -60.16N - 62 0 0 58 35 58.4 3 18 49 54 151 0.73 16.7 5.94 -60.42N - 61 0 0 58 31 11.5 3 19 49 54 153 0.72 17.0 6.18 -60.68N - 60 0 0 58 25 54.3 3 20 49 55 154 0.71 17.2 6.42 -60.94N - 59 0 0 58 20 6.4 3 21 50 55 156 0.70 17.5 6.67 -61.20N - 58 0 0 58 13 47.3 3 22 52 56 158 0.69 17.7 6.92 -61.47N - 57 0 0 58 6 56.6 3 23 54 56 160 0.68 18.0 7.17 -61.74N - 56 0 0 57 59 33.6 3 24 57 56 162 0.67 18.2 7.42 -62.01N - 55 0 0 57 51 37.9 3 26 1 57 164 0.66 18.5 7.67 -62.28N - 54 0 0 57 43 8.7 3 27 6 57 166 0.65 18.7 7.93 -62.56N - 53 0 0 57 34 5.5 3 28 12 57 168 0.65 19.0 8.19 -62.84N - 52 0 0 57 24 27.6 3 29 18 57 170 0.64 19.2 8.45 -63.12N - 51 0 0 57 14 14.3 3 30 26 58 172 0.63 19.5 8.71 -63.40N - 50 0 0 57 3 24.7 3 31 34 58 175 0.63 19.8 8.98 -63.69N 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 13 meters [Estimated] Librations Long +5.60 Lat -5.38 P +359.19 D +5.61 Illumination of moon 100%- Elongation of Moon 175 Vertical Profile Scale approx. 2.16 km/arcsec at mean distance of moon Horizontal Scale Factor 1.78 deg/min At longitude -90.00: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -57.8 2.0 3.4 4.1 4.6 4.9 5.1 5.2 -55.8 2.0 3.4 4.1 4.6 4.9 5.1 5.2 -53.8 2.0 3.4 4.1 4.6 4.9 5.1 5.2 -51.8 2.0 3.4 4.1 4.6 4.9 5.1 5.2 -49.8 2.0 3.4 4.1 4.6 4.9 5.1 5.2 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s