Grazing Occultation of 552 SB7 Magnitude 2.8s 552 = Alcyone = eta Tauri Date 2005 November 16 (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 145 0 0 -39 7 26 10 50 51 9 48 6.02 152.5 164.27 21.43S 145 10 0 -39 1 22 10 50 54 10 48 5.91 152.5 164.25 21.41S 145 20 0 -38 55 16 10 50 57 10 48 5.81 152.4 164.22 21.38S 145 30 0 -38 49 10 10 50 59 10 48 5.71 152.4 164.19 21.35S 145 40 0 -38 43 2 10 51 2 10 48 5.61 152.4 164.15 21.32S 145 50 0 -38 36 53 10 51 5 10 48 5.51 152.3 164.12 21.29S 146 0 0 -38 30 43 10 51 8 10 48 5.42 152.3 164.09 21.26S 146 10 0 -38 24 32 10 51 11 11 47 5.33 152.3 164.06 21.23S 146 20 0 -38 18 20 10 51 15 11 47 5.24 152.3 164.03 21.20S 146 30 0 -38 12 7 10 51 18 11 47 5.15 152.2 164.00 21.17S 146 40 0 -38 5 52 10 51 21 11 47 5.07 152.2 163.97 21.14S 146 50 0 -37 59 37 10 51 25 11 47 4.99 152.2 163.94 21.11S 147 0 0 -37 53 20 10 51 28 12 47 4.91 152.1 163.91 21.08S 147 10 0 -37 47 2 10 51 32 12 47 4.84 152.1 163.88 21.05S 147 20 0 -37 40 43 10 51 36 12 47 4.76 152.1 163.85 21.02S 147 30 0 -37 34 23 10 51 39 12 46 4.69 152.0 163.81 20.98S 147 40 0 -37 28 1 10 51 43 12 46 4.62 152.0 163.78 20.95S 147 50 0 -37 21 39 10 51 47 12 46 4.55 152.0 163.75 20.92S 148 0 0 -37 15 15 10 51 51 13 46 4.48 151.9 163.72 20.89S 148 10 0 -37 8 50 10 51 55 13 46 4.42 151.9 163.69 20.86S 148 20 0 -37 2 24 10 52 0 13 46 4.36 151.9 163.66 20.83S 148 30 0 -36 55 57 10 52 4 13 46 4.29 151.9 163.63 20.80S 148 40 0 -36 49 29 10 52 8 13 46 4.23 151.8 163.60 20.77S 148 50 0 -36 42 59 10 52 13 13 46 4.17 151.8 163.57 20.74S 149 0 0 -36 36 29 10 52 17 14 45 4.12 151.8 163.54 20.71S 149 10 0 -36 29 57 10 52 22 14 45 4.06 151.7 163.51 20.68S 149 20 0 -36 23 24 10 52 27 14 45 4.00 151.7 163.47 20.65S 149 30 0 -36 16 50 10 52 32 14 45 3.95 151.7 163.44 20.62S 149 40 1 -36 10 14 10 52 37 14 45 3.90 151.6 163.41 20.59S 149 50 1 -36 3 38 10 52 42 15 45 3.85 151.6 163.38 20.56S 150 0 1 -35 57 0 10 52 47 15 45 3.79 151.6 163.35 20.53S 150 10 1 -35 50 21 10 52 52 15 45 3.75 151.5 163.32 20.50S 150 20 1 -35 43 41 10 52 57 15 44 3.70 151.5 163.29 20.47S 150 30 1 -35 37 0 10 53 3 15 44 3.65 151.5 163.26 20.44S 150 40 1 -35 30 18 10 53 8 16 44 3.60 151.5 163.23 20.41S 150 50 1 -35 23 34 10 53 14 16 44 3.56 151.4 163.20 20.38S Path coordinates are referred to WGS84 (as used by GPS). 552 is multiple : 1.5 0.031" 207.1 : 3.0 4.6 0.031" 207.1 : 2.8 6.2 117" 290.0 Graze Path of component #2 0.04km North, and 0.1 secs. earlier cf. primary. Graze Path of component #3 0.04km North, and 0.1 secs. earlier cf. primary. Graze Path of component #4 198.53km South, and 172.8 secs. earlier cf. primary. 552 = NSV 15775, 2.87 +/- 0.00 V , Type VAR: Librations Long +5.66 Lat -5.45 P +162.7 D -3.3 Illumination of moon 100%- Elongation of Moon 173 Vertical Profile Scale 2.26 km/arcsec at mean distance of moon Horizontal Scale Factor 1.65 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 16.4 1.8 3.1 3.7 4.0 4.2 4.3 4.4 18.4 1.8 3.1 3.7 4.0 4.2 4.3 4.4 20.4 1.8 3.1 3.7 4.0 4.2 4.3 4.4 22.4 1.9 3.2 3.8 4.1 4.3 4.4 4.5 24.4 2.0 3.3 4.0 4.3 4.5 4.6 4.7