Grazing Occultation of 2601 SK4 Magnitude 6.8 Date 2007 June 2 (Saturday) 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 150 0 0 -28 5 30 17 32 5 61 262 0.56 348.0 348.07 24.86N 150 10 0 -28 1 17 17 32 31 61 262 0.56 347.9 348.01 24.92N 150 20 0 -27 57 1 17 32 57 60 262 0.57 347.9 347.96 24.97N 150 30 0 -27 52 44 17 33 24 60 262 0.57 347.8 347.90 25.02N 150 40 0 -27 48 25 17 33 50 60 262 0.58 347.8 347.85 25.08N 150 50 0 -27 44 5 17 34 16 60 261 0.59 347.7 347.80 25.13N 151 0 0 -27 39 43 17 34 42 59 261 0.59 347.7 347.74 25.18N 151 10 0 -27 35 19 17 35 8 59 261 0.60 347.6 347.69 25.24N 151 20 0 -27 30 53 17 35 34 59 261 0.60 347.6 347.64 25.29N 151 30 0 -27 26 26 17 36 0 59 261 0.61 347.5 347.59 25.34N 151 40 0 -27 21 57 17 36 26 58 260 0.62 347.5 347.54 25.39N 151 50 0 -27 17 27 17 36 51 58 260 0.62 347.4 347.49 25.44N 152 0 0 -27 12 55 17 37 17 58 260 0.63 347.4 347.44 25.49N 152 10 0 -27 8 21 17 37 43 58 260 0.63 347.3 347.39 25.54N 152 20 0 -27 3 46 17 38 8 57 260 0.64 347.3 347.34 25.59N 152 30 0 -26 59 9 17 38 33 57 260 0.65 347.2 347.29 25.64N 152 40 0 -26 54 30 17 38 59 57 259 0.65 347.2 347.24 25.68N 152 50 0 -26 49 50 17 39 24 57 259 0.66 347.1 347.19 25.73N 153 0 0 -26 45 8 17 39 49 56 259 0.67 347.1 347.15 25.78N 153 10 0 -26 40 25 17 40 14 56 259 0.67 347.0 347.10 25.83N 153 20 0 -26 35 40 17 40 39 56 259 0.68 347.0 347.05 25.87N Path coordinates are referred to WGS84 (as used by GPS). 2601 is triple : 6.6 9.1 0.200" 212.0 : 6.7 13.0 8.9" 27.0 Graze Path of component #2 0.26km North, and 0.4 secs. earlier cf. primary. Graze Path of component #3 12.43km South, and 15.8 secs. later cf. primary. Librations Long -5.44 Lat +6.08 P +346.5 D -4.4 Illumination of moon 97%- Elongation of Moon 160 Vertical Profile Scale 1.87 km/arcsec at mean distance of moon Horizontal Scale Factor 1.37 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 21.9 5.0 6.5 7.3 7.8 8.1 8.4 8.6 23.9 5.3 6.7 7.5 8.0 8.4 8.6 8.8 25.9 5.4 6.9 7.7 8.2 8.6 8.8 9.0 27.9 5.5 6.9 7.7 8.2 8.6 8.8 9.0 29.9 5.5 6.9 7.7 8.2 8.6 8.8 9.0