Grazing Occultation of 2366 dM1 Magnitude 1.1v 2366 = Antares = alpha Scorpii Date 2007 July 25 (Wednesday) Nominal site altitude 0m E. Longit. Latitude U.T. Sun Moon TanZ PA WA CA o ' " o ' " h m s Alt Alt Az o o o 137 0 0 -33 0 28 17 34 10 9 244 6.12 358.5 349.92 -6.59N 137 10 0 -32 55 15 17 34 13 9 244 6.24 358.5 349.94 -6.58N 137 20 0 -32 50 2 17 34 17 9 244 6.36 358.5 349.93 -6.58N 137 30 0 -32 44 49 17 34 20 9 244 6.49 358.5 349.93 -6.58N 137 40 0 -32 39 35 17 34 23 9 244 6.63 358.5 349.92 -6.59N 137 50 0 -32 34 22 17 34 27 8 244 6.77 358.5 349.92 -6.59N 138 0 0 -32 29 8 17 34 30 8 244 6.91 358.5 349.92 -6.59N 138 10 0 -32 23 54 17 34 33 8 244 7.07 358.5 349.91 -6.60N 138 20 0 -32 18 41 17 34 36 8 244 7.22 358.5 349.91 -6.60N 138 30 0 -32 13 27 17 34 39 8 244 7.39 358.5 349.91 -6.60N 138 40 0 -32 8 13 17 34 42 8 243 7.56 358.5 349.90 -6.61N 138 50 0 -32 2 59 17 34 45 7 243 7.74 358.5 349.90 -6.61N 139 0 0 -31 57 45 17 34 48 7 243 7.93 358.5 349.90 -6.61N 139 10 0 -31 52 31 17 34 51 7 243 8.13 358.5 349.89 -6.62N 139 20 0 -31 47 17 17 34 54 7 243 8.34 358.5 349.89 -6.62N 139 30 0 -31 42 3 17 34 56 7 243 8.56 358.5 349.89 -6.62N 139 40 0 -31 36 48 17 34 59 6 243 8.80 358.5 349.89 -6.62N 139 50 0 -31 31 34 17 35 1 6 243 9.04 358.5 349.88 -6.63N 140 0 0 -31 26 20 17 35 4 6 243 9.30 358.5 349.88 -6.63N 140 10 0 -31 21 6 17 35 6 6 243 9.57 358.5 349.88 -6.63N 140 20 0 -31 15 51 17 35 8 6 243 9.86 358.5 349.88 -6.63N 140 30 0 -31 10 37 17 35 10 6 242 10.17 358.5 349.88 -6.63N 140 40 0 -31 5 23 17 35 13 5 242 10.49 358.5 349.88 -6.64N 140 50 0 -31 0 9 17 35 15 5 242 10.84 358.5 349.87 -6.64N 141 0 0 -30 54 54 17 35 17 5 242 11.21 358.5 349.87 -6.64N 141 10 0 -30 49 40 17 35 19 5 242 11.61 358.5 349.87 -6.64N 141 20 0 -30 44 26 17 35 20 5 242 12.03 358.5 349.87 -6.64N 141 30 0 -30 39 12 17 35 22 5 242 12.49 358.5 349.87 -6.64N 141 40 1 -30 33 57 17 35 24 4 242 12.99 358.5 349.87 -6.64N 141 50 1 -30 28 43 17 35 26 4 242 13.52 358.5 349.87 -6.64N 142 0 1 -30 23 29 17 35 27 4 242 14.10 358.5 349.87 -6.64N 142 10 1 -30 18 15 17 35 29 4 242 14.72 358.5 349.87 -6.65N 142 20 1 -30 13 1 17 35 30 4 241 15.41 358.5 349.86 -6.65N 142 30 1 -30 7 47 17 35 32 4 241 16.17 358.5 349.86 -6.65N 142 40 1 -30 2 33 17 35 33 3 241 17.00 358.5 349.86 -6.65N 142 50 1 -29 57 19 17 35 34 3 241 17.91 358.5 349.86 -6.65N 143 0 1 -29 52 6 17 35 35 3 241 18.94 358.5 349.86 -6.65N 143 10 1 -29 46 52 17 35 36 3 241 20.08 358.5 349.86 -6.65N 143 20 1 -29 41 38 17 35 38 3 241 21.37 358.5 349.86 -6.65N 143 30 1 -29 36 25 17 35 38 3 241 22.84 358.5 349.86 -6.65N 143 40 1 -29 31 12 17 35 39 2 241 24.53 358.5 349.86 -6.65N 143 50 1 -29 25 58 17 35 40 2 241 26.48 358.5 349.86 -6.65N 144 0 1 -29 20 45 17 35 41 2 241 28.76 358.5 349.87 -6.65N Path coordinates are referred to WGS84 (as used by GPS). 2366 is double : 0.9 5.4 2.5" 273.7 Graze Path of component #2 0.45km South, and 4.5 secs. earlier cf. primary. 2366 = alf Sco, 0.88 to 1.16 V , Type LC Librations Long -4.68 Lat +6.35 P +349.4 D -5.2 Illumination of moon 80%+ Elongation of Moon 127 Vertical Profile Scale 2.02 km/arcsec at mean distance of moon Horizontal Scale Factor 2.12 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 -10.6 -0.9 0.0 0.4 0.6 0.6 0.7 0.7 -8.6 -0.9 0.0 0.4 0.6 0.6 0.7 0.7 -6.6 -0.9 0.0 0.4 0.6 0.6 0.7 0.7 -4.6 -0.9 0.0 0.4 0.6 0.6 0.7 0.7 -2.6 -0.9 0.0 0.4 0.6 0.6 0.7 0.7