Grazing Occultation of 2644 cF8 Magnitude 6.4 Date 2005 September 12 (Monday) 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 144 0 0 -39 16 52 14 50 13 22 251 2.50 169.6 171.87 7.49S 144 10 0 -39 10 29 14 50 21 22 250 2.52 169.6 171.86 7.50S 144 20 0 -39 4 7 14 50 30 21 250 2.54 169.6 171.86 7.50S 144 30 0 -38 57 44 14 50 38 21 250 2.57 169.6 171.85 7.51S 144 40 0 -38 51 21 14 50 47 21 250 2.59 169.6 171.85 7.51S 144 50 0 -38 44 57 14 50 55 21 250 2.62 169.6 171.84 7.52S 145 0 0 -38 38 34 14 51 4 21 250 2.64 169.6 171.84 7.52S 145 10 0 -38 32 10 14 51 12 21 250 2.67 169.6 171.83 7.52S 145 20 0 -38 25 47 14 51 20 20 249 2.69 169.6 171.83 7.53S 145 30 0 -38 19 23 14 51 28 20 249 2.72 169.6 171.82 7.53S 145 40 0 -38 12 59 14 51 36 20 249 2.75 169.6 171.82 7.54S 145 50 0 -38 6 36 14 51 44 20 249 2.78 169.6 171.82 7.54S 146 0 0 -38 0 12 14 51 52 20 249 2.81 169.6 171.81 7.54S 146 10 0 -37 53 48 14 52 0 19 249 2.83 169.6 171.81 7.55S 146 20 0 -37 47 24 14 52 8 19 249 2.86 169.5 171.81 7.55S 146 30 0 -37 41 0 14 52 16 19 249 2.89 169.5 171.80 7.55S 146 40 0 -37 34 36 14 52 23 19 248 2.92 169.5 171.80 7.56S 146 50 0 -37 28 12 14 52 31 19 248 2.96 169.5 171.80 7.56S 147 0 0 -37 21 48 14 52 38 19 248 2.99 169.5 171.80 7.56S 147 10 0 -37 15 24 14 52 46 18 248 3.02 169.5 171.79 7.56S 147 20 0 -37 9 0 14 52 53 18 248 3.05 169.5 171.79 7.57S 147 30 0 -37 2 36 14 53 0 18 248 3.09 169.5 171.79 7.57S 147 40 0 -36 56 12 14 53 8 18 248 3.12 169.5 171.79 7.57S 147 50 0 -36 49 48 14 53 15 18 247 3.16 169.5 171.79 7.57S 148 0 0 -36 43 25 14 53 22 17 247 3.19 169.5 171.79 7.57S 148 10 0 -36 37 1 14 53 29 17 247 3.23 169.5 171.78 7.57S 148 20 0 -36 30 38 14 53 36 17 247 3.27 169.5 171.78 7.57S 148 30 0 -36 24 14 14 53 43 17 247 3.30 169.5 171.78 7.58S 148 40 1 -36 17 51 14 53 50 17 247 3.34 169.5 171.78 7.58S 148 50 1 -36 11 28 14 53 56 16 247 3.38 169.5 171.78 7.58S 149 0 1 -36 5 5 14 54 3 16 247 3.43 169.5 171.78 7.58S 149 10 1 -35 58 42 14 54 10 16 246 3.47 169.5 171.78 7.58S 149 20 1 -35 52 20 14 54 16 16 246 3.51 169.5 171.78 7.58S 149 30 1 -35 45 57 14 54 23 16 246 3.55 169.5 171.78 7.58S 149 40 1 -35 39 35 14 54 29 16 246 3.60 169.5 171.78 7.58S 149 50 1 -35 33 13 14 54 35 15 246 3.64 169.5 171.78 7.58S 150 0 1 -35 26 51 14 54 42 15 246 3.69 169.5 171.78 7.58S 150 10 1 -35 20 30 14 54 48 15 246 3.74 169.5 171.78 7.58S 150 20 1 -35 14 8 14 54 54 15 246 3.79 169.5 171.78 7.57S 150 30 1 -35 7 47 14 55 0 15 245 3.84 169.5 171.78 7.57S 150 40 1 -35 1 26 14 55 6 14 245 3.89 169.5 171.79 7.57S 150 50 1 -34 55 6 14 55 12 14 245 3.94 169.5 171.79 7.57S Path coordinates are referred to WGS84 (as used by GPS). 2644 is double : 7.1 7.1 0.100" 90.0 Graze Path of component #2 0.04km North, and 0.2 secs. later cf. primary. Librations Long -6.15 Lat +6.15 P +171.1 D +5.5 Illumination of moon 62%+ Elongation of Moon 104 Vertical Profile Scale 2.20 km/arcsec at mean distance of moon Horizontal Scale Factor 2.15 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 3.6 4.2 5.5 6.2 6.5 6.8 6.9 7.0 5.6 4.9 6.3 6.9 7.3 7.6 7.7 7.8 7.6 4.9 6.3 7.0 7.3 7.6 7.8 7.9 9.6 4.9 6.3 7.0 7.4 7.6 7.8 7.9 11.6 4.9 6.3 7.0 7.4 7.6 7.8 7.9