Grazing Occultation of 1925SB1 Magnitude 1.0 [Red = 1.1] v R1925 = Spica = alpha Virginis Date: 2024 Nov 27 11h 17m, to 2024 Nov 27 11h 40m 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 - 89 30 0 65 42 26.4 11 17 9 3 126 18.31 31.5 11.21 -12.35N - 89 15 0 65 38 15.7 11 17 9 3 127 17.60 31.5 11.24 -12.38N - 89 0 0 65 34 3.0 11 17 9 3 127 16.95 31.6 11.27 -12.41N - 88 45 0 65 29 48.4 11 17 9 4 127 16.34 31.6 11.31 -12.44N - 88 30 0 65 25 31.3 11 17 9 4 127 15.76 31.6 11.34 -12.48N - 88 15 0 65 21 12.7 11 17 9 4 128 15.23 31.7 11.37 -12.51N - 88 0 0 65 16 52.2 11 17 10 4 128 14.73 31.7 11.41 -12.54N - 87 45 0 65 12 29.6 11 17 10 4 128 14.26 31.7 11.44 -12.58N - 87 30 0 65 8 5.0 11 17 10 4 128 13.81 31.8 11.47 -12.61N - 87 15 0 65 3 38.4 11 17 11 4 128 13.39 31.8 11.51 -12.64N - 87 0 0 64 59 9.7 11 17 11 4 129 12.99 31.8 11.54 -12.68N - 86 45 0 64 54 38.9 11 17 11 5 129 12.62 31.9 11.58 -12.71N - 86 30 0 64 50 6.1 11 17 12 5 129 12.26 31.9 11.61 -12.75N - 86 15 0 64 45 31.1 11 17 12 5 129 11.92 31.9 11.64 -12.78N - 86 0 0 64 40 54.1 11 17 13 5 130 11.60 32.0 11.68 -12.82N - 85 45 0 64 36 14.9 11 17 14 5 130 11.29 32.0 11.71 -12.85N - 85 30 0 64 31 33.6 11 17 14 5 130 11.00 32.0 11.75 -12.89N - 85 15 0 64 26 50.2 11 17 15 5 130 10.72 32.1 11.78 -12.92N - 85 0 0 64 22 4.6 11 17 16 5 131 10.45 32.1 11.82 -12.96N - 84 45 0 64 17 16.8 11 17 17 6 131 10.20 32.1 11.86 -12.99N - 84 30 0 64 12 26.8 11 17 18 6 131 9.95 32.2 11.89 -13.03N - 84 15 0 64 7 34.0 11 17 19 6 131 9.72 32.2 11.93 -13.06N - 84 0 0 64 2 39.6 11 17 20 6 131 9.50 32.3 11.96 -13.10N - 83 45 0 63 57 43.0 11 17 21 6 132 9.28 32.3 12.00 -13.14N - 83 30 0 63 52 44.1 11 17 22 6 132 9.07 32.3 12.04 -13.17N - 83 15 0 63 47 42.9 11 17 23 6 132 8.87 32.4 12.07 -13.21N - 83 0 0 63 42 39.5 11 17 24 7 132 8.68 32.4 12.11 -13.25N - 82 45 0 63 37 33.7 11 17 25 7 133 8.50 32.4 12.15 -13.29N - 82 30 0 63 32 25.6 11 17 27 7 133 8.32 32.5 12.19 -13.32N - 82 15 0 63 27 15.2 11 17 28 7 133 8.15 32.5 12.22 -13.36N - 82 0 0 63 22 2.4 11 17 30 7 133 7.98 32.6 12.26 -13.40N - 81 45 0 63 16 47.2 11 17 31 7 133 7.82 32.6 12.30 -13.44N - 81 30 0 63 11 29.7 11 17 33 7 134 7.67 32.6 12.34 -13.48N - 81 15 0 63 6 9.7 11 17 35 8 134 7.52 32.7 12.38 -13.51N - 81 0 0 63 0 47.3 11 17 36 8 134 7.37 32.7 12.42 -13.55N - 80 45 0 62 55 22.4 11 17 38 8 134 7.23 32.7 12.46 -13.59N - 80 30 0 62 49 55.1 11 17 40 8 135 7.10 32.8 12.49 -13.63N - 80 15 0 62 44 25.3 11 17 42 8 135 6.97 32.8 12.53 -13.67N - 80 0 0 62 38 53.0 11 17 44 8 135 6.84 32.9 12.57 -13.71N - 79 45 0 62 33 18.1 11 17 46 8 135 6.72 32.9 12.61 -13.75N - 79 30 0 62 27 40.7 11 17 48 9 136 6.60 32.9 12.65 -13.79N - 79 15 0 62 22 0.8 11 17 50 9 136 6.48 33.0 12.69 -13.83N - 79 0 0 62 16 18.3 11 17 53 9 136 6.37 33.0 12.74 -13.87N - 78 45 0 62 10 33.5 11 17 55 9 136 6.26 33.1 12.78 -13.91N - 78 30 0 62 4 45.8 11 17 58 9 137 6.15 33.1 12.82 -13.95N - 78 15 0 61 58 55.4 11 18 0 9 137 6.05 33.1 12.86 -13.99N - 78 0 0 61 53 2.4 11 18 3 10 137 5.95 33.2 12.90 -14.04N - 77 45 0 61 47 6.7 11 18 6 10 137 5.85 33.2 12.94 -14.08N - 77 30 0 61 41 8.2 11 18 8 10 137 5.75 33.3 12.98 -14.12N - 77 15 0 61 35 7.1 11 18 11 10 138 5.66 33.3 13.03 -14.16N - 77 0 0 61 29 3.3 11 18 14 10 138 5.57 33.4 13.07 -14.20N - 76 45 0 61 22 56.6 11 18 17 10 138 5.48 33.4 13.11 -14.25N - 76 30 0 61 16 47.2 11 18 20 10 138 5.40 33.4 13.15 -14.29N - 76 15 0 61 10 35.0 11 18 24 11 139 5.31 33.5 13.20 -14.33N - 76 0 0 61 4 20.0 11 18 27 11 139 5.23 33.5 13.24 -14.38N - 75 45 0 60 58 2.1 11 18 30 11 139 5.15 33.6 13.28 -14.42N - 75 30 0 60 51 41.4 11 18 34 11 139 5.07 33.6 13.33 -14.46N - 75 15 0 60 45 17.8 11 18 37 11 140 5.00 33.7 13.37 -14.51N - 75 0 0 60 38 51.2 11 18 41 11 140 4.92 33.7 13.42 -14.55N - 74 45 0 60 32 21.8 11 18 45 12 140 4.85 33.8 13.46 -14.60N - 74 30 0 60 25 49.3 11 18 49 12 140 4.78 33.8 13.51 -14.64N - 74 15 0 60 19 13.9 11 18 53 12 141 4.71 33.8 13.55 -14.69N - 74 0 0 60 12 35.5 11 18 57 12 141 4.64 33.9 13.60 -14.73N - 73 45 0 60 5 54.1 11 19 1 12 141 4.57 33.9 13.64 -14.78N - 73 30 0 59 59 9.6 11 19 5 13 141 4.51 34.0 13.69 -14.82N - 73 15 0 59 52 22.1 11 19 10 13 141 4.45 34.0 13.74 -14.87N - 73 0 0 59 45 31.4 11 19 14 13 142 4.38 34.1 13.78 -14.92N - 72 45 0 59 38 37.7 11 19 19 13 142 4.32 34.1 13.83 -14.96N - 72 30 0 59 31 40.8 11 19 24 13 142 4.26 34.2 13.88 -15.01N - 72 15 0 59 24 40.7 11 19 29 13 142 4.20 34.2 13.92 -15.06N - 72 0 0 59 17 37.4 11 19 33 14 143 4.15 34.3 13.97 -15.11N - 71 45 0 59 10 30.9 11 19 39 14 143 4.09 34.3 14.02 -15.15N - 71 30 0 59 3 21.2 11 19 44 14 143 4.04 34.4 14.07 -15.20N - 71 15 0 58 56 8.2 11 19 49 14 143 3.98 34.4 14.12 -15.25N - 71 0 0 58 48 51.9 11 19 55 -12 14 144 3.93 34.5 14.17 -15.30N - 70 45 0 58 41 32.2 11 20 0 -12 14 144 3.88 34.5 14.22 -15.35N - 70 30 0 58 34 9.2 11 20 6 -12 15 144 3.83 34.6 14.26 -15.40N - 70 15 0 58 26 42.9 11 20 12 -11 15 144 3.78 34.6 14.31 -15.45N - 70 0 0 58 19 14.4 11 20 18 -11 15 145 3.73 34.7 14.36 -15.50N - 69 45 0 58 11 41.2 11 20 24 -11 15 145 3.68 34.7 14.41 -15.55N - 69 30 0 58 4 4.4 11 20 30 -11 15 145 3.63 34.8 14.47 -15.60N - 69 15 0 57 56 24.2 11 20 36 -11 16 145 3.59 34.8 14.52 -15.65N - 69 0 0 57 48 40.5 11 20 43 -11 16 146 3.54 34.9 14.57 -15.70N - 68 45 0 57 40 53.1 11 20 50 -10 16 146 3.50 34.9 14.62 -15.75N - 68 30 0 57 33 2.3 11 20 57 -10 16 146 3.45 35.0 14.67 -15.80N - 68 15 0 57 25 7.9 11 21 3 -10 16 146 3.41 35.0 14.72 -15.86N - 68 0 0 57 17 9.8 11 21 11 -10 17 147 3.37 35.1 14.77 -15.91N - 67 45 0 57 9 8.2 11 21 18 -10 17 147 3.33 35.1 14.83 -15.96N - 67 30 0 57 1 2.8 11 21 25 -9 17 147 3.28 35.2 14.88 -16.01N - 67 15 0 56 52 53.7 11 21 33 -9 17 147 3.24 35.2 14.93 -16.07N - 67 0 0 56 44 40.9 11 21 41 -9 17 148 3.20 35.3 14.99 -16.12N - 66 45 0 56 36 24.4 11 21 48 -9 18 148 3.17 35.3 15.04 -16.17N - 66 30 0 56 28 4.0 11 21 57 -9 18 148 3.13 35.4 15.09 -16.23N - 66 15 0 56 19 39.8 11 22 5 -8 18 148 3.09 35.4 15.15 -16.28N - 66 0 0 56 11 11.8 11 22 13 -8 18 149 3.05 35.5 15.20 -16.33N - 65 45 0 56 2 39.9 11 22 22 -8 18 149 3.02 35.5 15.26 -16.39N - 65 30 0 55 54 4.0 11 22 31 -8 19 149 2.98 35.6 15.31 -16.44N - 65 15 0 55 45 24.2 11 22 39 -8 19 149 2.94 35.7 15.37 -16.50N - 65 0 0 55 36 40.5 11 22 49 -7 19 150 2.91 35.7 15.42 -16.56N - 64 45 0 55 27 52.7 11 22 58 -7 19 150 2.88 35.8 15.48 -16.61N - 64 30 0 55 19 0.9 11 23 7 -7 19 150 2.84 35.8 15.54 -16.67N - 64 15 0 55 10 5.0 11 23 17 -7 20 150 2.81 35.9 15.59 -16.72N - 64 0 0 55 1 5.0 11 23 27 -7 20 151 2.78 35.9 15.65 -16.78N - 63 45 0 54 52 0.5 11 23 37 -6 20 151 2.74 36.0 15.71 -16.84N - 63 30 0 54 42 52.2 11 23 47 -6 20 151 2.71 36.1 15.76 -16.90N - 63 15 0 54 33 39.8 11 23 58 -6 20 152 2.68 36.1 15.82 -16.95N - 63 0 0 54 24 23.1 11 24 8 -6 21 152 2.65 36.2 15.88 -17.01N - 62 45 0 54 15 2.1 11 24 19 -5 21 152 2.62 36.2 15.94 -17.07N - 62 30 0 54 5 36.8 11 24 30 -5 21 152 2.59 36.3 16.00 -17.13N - 62 15 0 53 56 7.2 11 24 42 -5 21 153 2.56 36.3 16.05 -17.19N - 62 0 0 53 46 33.2 11 24 53 -5 22 153 2.53 36.4 16.11 -17.24N - 61 45 0 53 36 54.9 11 25 5 -4 22 153 2.50 36.5 16.17 -17.30N - 61 30 0 53 27 12.0 11 25 17 -4 22 153 2.47 36.5 16.23 -17.36N - 61 15 0 53 17 24.8 11 25 29 -4 22 154 2.45 36.6 16.29 -17.42N - 61 0 0 53 7 33.0 11 25 42 -4 22 154 2.42 36.6 16.35 -17.48N - 60 45 0 52 57 36.7 11 25 55 -4 23 154 2.39 36.7 16.41 -17.54N - 60 30 0 52 47 35.9 11 26 8 -3 23 155 2.36 36.8 16.47 -17.60N - 60 15 0 52 37 30.5 11 26 21 -3 23 155 2.34 36.8 16.53 -17.66N - 60 0 0 52 27 20.5 11 26 34 -3 23 155 2.31 36.9 16.59 -17.73N - 59 45 0 52 17 5.8 11 26 48 -3 24 155 2.29 36.9 16.66 -17.79N - 59 30 0 52 6 46.5 11 27 2 -2 24 156 2.26 37.0 16.72 -17.85N - 59 15 0 51 56 22.4 11 27 16 -2 24 156 2.24 37.1 16.78 -17.91N - 59 0 0 51 45 53.6 11 27 31 -2 24 156 2.21 37.1 16.84 -17.97N - 58 45 0 51 35 19.9 11 27 45 -1 25 157 2.19 37.2 16.90 -18.03N - 58 30 0 51 24 41.5 11 28 1 -1 25 157 2.16 37.3 16.97 -18.10N - 58 15 0 51 13 58.3 11 28 16 -1 25 157 2.14 37.3 17.03 -18.16N - 58 0 0 51 3 10.1 11 28 32 -1 25 158 2.12 37.4 17.09 -18.22N - 57 45 0 50 52 17.0 11 28 47 0 26 158 2.09 37.4 17.15 -18.28N - 57 30 0 50 41 19.0 11 29 4 0 26 158 2.07 37.5 17.22 -18.35N - 57 15 0 50 30 16.0 11 29 20 0 26 158 2.05 37.6 17.28 -18.41N - 57 0 0 50 19 8.0 11 29 37 0 26 159 2.02 37.6 17.34 -18.47N - 56 45 0 50 7 55.0 11 29 54 1 27 159 2.00 37.7 17.41 -18.54N - 56 30 0 49 56 36.9 11 30 12 1 27 159 1.98 37.8 17.47 -18.60N - 56 15 0 49 45 13.7 11 30 30 1 27 160 1.96 37.8 17.53 -18.66N - 56 0 0 49 33 45.4 11 30 48 1 27 160 1.94 37.9 17.60 -18.73N - 55 45 0 49 22 11.9 11 31 6 2 28 160 1.92 38.0 17.66 -18.79N - 55 30 0 49 10 33.3 11 31 25 2 28 161 1.90 38.0 17.73 -18.85N - 55 15 0 48 58 49.5 11 31 44 2 28 161 1.88 38.1 17.79 -18.92N - 55 0 0 48 47 0.4 11 32 3 3 28 161 1.86 38.1 17.86 -18.98N - 54 45 0 48 35 6.1 11 32 23 3 29 162 1.84 38.2 17.92 -19.05N - 54 30 0 48 23 6.6 11 32 44 3 29 162 1.82 38.3 17.98 -19.11N - 54 15 0 48 11 1.7 11 33 4 4 29 162 1.80 38.3 18.05 -19.18N - 54 0 0 47 58 51.5 11 33 25 4 29 163 1.78 38.4 18.11 -19.24N - 53 45 0 47 46 35.9 11 33 46 4 30 163 1.76 38.5 18.18 -19.30N - 53 30 0 47 34 15.0 11 34 8 4 30 163 1.74 38.5 18.24 -19.37N - 53 15 0 47 21 48.7 11 34 30 5 30 164 1.72 38.6 18.31 -19.43N - 53 0 0 47 9 17.1 11 34 53 5 30 164 1.70 38.7 18.37 -19.50N - 52 45 0 46 56 39.9 11 35 15 5 31 164 1.69 38.7 18.43 -19.56N - 52 30 0 46 43 57.4 11 35 39 6 31 165 1.67 38.8 18.50 -19.63N - 52 15 0 46 31 9.4 11 36 2 6 31 165 1.65 38.9 18.56 -19.69N - 52 0 0 46 18 15.9 11 36 27 6 31 165 1.63 38.9 18.63 -19.75N - 51 45 0 46 5 16.9 11 36 51 7 32 166 1.62 39.0 18.69 -19.82N - 51 30 0 45 52 12.5 11 37 16 7 32 166 1.60 39.0 18.75 -19.88N - 51 15 0 45 39 2.6 11 37 42 7 32 167 1.58 39.1 18.82 -19.94N - 51 0 0 45 25 47.2 11 38 7 8 33 167 1.57 39.2 18.88 -20.01N - 50 45 0 45 12 26.3 11 38 34 8 33 167 1.55 39.2 18.94 -20.07N - 50 30 0 44 59 0.0 11 39 0 8 33 168 1.53 39.3 19.01 -20.13N - 50 15 0 44 45 28.1 11 39 28 9 33 168 1.52 39.4 19.07 -20.19N - 50 0 0 44 31 50.8 11 39 55 9 34 168 1.50 39.4 19.13 -20.26N 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. Projected diameter of star 2 meters [CHARM/CADARS, 6 measures] 1925 is variable: 1925 = alf Vir, 0.96 to 1.00, V, Type ELL+BCEP, Period 4.0145 days, Phase 75% 1925 is multiple: Aa,Ab 1.3 4.5 0.10" (OCC 418) Graze path of Ab approximately 0.2 km south, and 0.2 secs earlier compared to Aa - refer to graze profile for exact distances Aa,Ac 1.3 7.5 0.50" (OCC 418) Graze path of Ac approximately 0.9 km south, and 0.9 secs earlier compared to Aa - refer to graze profile for exact distances AB 1.0 12.0 154" 33.0 (BUP 150) Graze path of B approximately 374.6 km south, and 11.1 secs earlier compared to A - refer to graze profile for exact distances AC 1.0 10.5 368" 60.8 (BUP 150) Graze path of C approximately 806.3 km south, and 392.3 secs later compared to A - refer to graze profile for exact distances Librations Long +0.43 Lat +2.84 P +14.45 D -2.38 Illumination of moon 13%- Elongation of Moon 42 Vertical Profile Scale approx. 2.57 km/arcsec at mean distance of moon Horizontal Scale Factor 1.60 deg/min At longitude -69.75: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 -19.5 3.1 4.4 5.0 5.4 5.6 5.7 5.8 -17.5 3.1 4.4 5.0 5.4 5.6 5.7 5.8 -15.5 3.1 4.4 5.0 5.4 5.6 5.7 5.8 -13.5 3.1 4.4 5.0 5.4 5.6 5.7 5.8 -11.5 3.1 4.4 5.0 5.4 5.6 5.7 5.8 ------------------------------------------------------------------------------ Double star catalogue details Star is a Kepler2 target star. EPIC_ID = 212573842 ------------------------------------------------ WDS entries RA Dec Name Y1 Y2 N PA PA Sep Sep M1 M2 13252-1110OCC 418Aa,Ab 1975 1995 0 -1 -1 0.1 -1.0 1.3 4.5 B1III- -042-031 -10 3672 N 132511.58-110940.4 13252-1110OCC 418Aa,Ac 1975 1975 0 -1 -1 0.5 0.5 1.3 7.5 B1III- -042-031 -10 3672 N 132511.58-110940.4 13252-1110BUP 150AB 1879 2010 5 33 33 144.4 151.9 0.98 12.0 B1III-+B2 -042-031 -10 3672 N 132511.58-110940.4 13252-1110BUP 150AC 1879 2010 3 62 61 359.8 367.3 0.98 10.5 B1III-+B2 -042-031 N 132511.58-110940.4 ------------------------------------------------ Interferometric catalogue entries 132511.58-110940.4 HR 5056 = alp Vir OCC 418Aa,Ab HD 116658 HIP 65474 13252-1110 N Date PA Sep M1 M2 1975. V225. . 0.05 . 1.3 . 4.5 . . 1 OCC2002 O 1988.166 . . < 0.038 . . . . . 549 22 3.6 1 McA1993 Sc 1989.3938 . . < 0.05 . . . . . 2.1 1 Iso1992 S 1991.25 . . < 0.1 . 0.89 . . . 511 222 0.3 1 HIP1997e Hh 1995.2090 V237. . . . . . . . 1260 290 1.5 1 Rch1996 O 2002.2408 . . < 0.13 . . . . . 900 340 3.6 1 Rbr2007 A 2002.2409 . . < 0.08 . . . . . 900 340 3.6 1 Rbr2007 A 132511.58-110940.4 HR 5056 = alp Vir OCC 418Aa,Ac HD 116658 HIP 65474 13252-1110 N Date PA Sep M1 M2 1975. V180. . 0.5 . 1.3 . 7.5 . . 1 OCC2002 O ------------------------------------------------ AAVSO Variable star entry Variable identifier Type Max Min Ph Epoch Period alf Vir ELL+BCEP 0.96 1.00 V 2419530.4900 4.0145000 ------------------------------------------------------------------------------ Results of Observer Scan UT Site Long. Lat. Dist. h m s Abilene TX -99.7 32.5 105km 10 56 22.3 Alamogordo NM -106.0 32.9 28km 10 54 4.3 Albuquerque NM -106.7 35.1 185km 10 53 53.8 Amarillo TX -101.8 35.2 327km 10 55 26.0 Austin TX -97.7 30.3 55km 10 57 25.8 Baton Rouge LA -91.2 30.5 212km 11 2 16.5 Beaumont TX -94.1 30.1 60km 10 59 50.4 Biloxi MS -88.9 30.4 303km 11 4 33.2 CiudadJuarez MX -106.5 31.7 171km 10 53 56.2 Crps Christi TX -97.4 27.8 298km 10 57 37.9 Dallas TX -96.8 32.8 237km 10 57 59.8 El Paso TX -106.5 31.8 165km 10 53 56.2 Fort Worth TX -97.3 32.7 214km 10 57 40.3 Gallup NM -108.7 35.5 182km 10 53 27.9 Galveston TX -94.8 29.3 46km 10 59 19.9 Gulfport MS -89.1 30.4 291km 11 4 19.8 Havana Cuba -82.4 23.1 70km 11 13 5.5 Houston TX -95.4 29.8 21km 10 58 56.0 Key West FL -81.8 24.6 93km 11 13 59.9 Kingston JM -76.8 18.0 203km 11 23 29.1 Kingsville TX -97.8 27.5 343km 10 57 22.7 Las Cruces NM -106.7 32.3 109km 10 53 52.7 Lubbock TX -101.8 33.6 158km 10 55 25.8 Marshall TX -94.4 32.6 298km 10 59 37.8 Miami FL -80.2 25.8 290km 11 16 45.8 Mobile AL -88.0 30.7 367km 11 5 28.3 Natchez MS -91.4 31.6 314km 11 2 5.1 New Orleans LA -90.1 29.9 209km 11 3 20.1 Pensacola FL -87.2 30.4 377km 11 6 25.6 Port Arthur TX -93.9 29.9 45km 10 59 57.9 San Angelo TX -100.4 31.5 21km 10 56 2.3 San Antonio TX -98.5 29.4 168km 10 57 0.9 Santa Fe NM -105.9 35.7 267km 10 54 4.5 SantoDomingo DR -70.0 18.5 302km 11 41 32.2 Sarasota FL -82.5 27.3 309km 11 12 49.0 Shreveport LA -93.1 32.5 342km 11 0 38.1 St John's NF -52.7 47.6 45km 11 35 18.8 StPetersburg FL -82.6 27.8 344km 11 12 39.9 Tampa FL -82.5 28.0 369km 11 12 57.0 Victoria TX -97.0 28.8 179km 10 57 52.8 W Palm Beach FL -80.1 26.7 381km 11 17 0.9 Waco TX -97.1 31.6 99km 10 57 47.3 WichitaFalls TX -98.5 33.9 295km 10 57 0.7