Grazing Occultation of 1712 SF8 Magnitude 3.6 1712 = Zavijava = beta Virginis Date 2005 December 23 (Friday) Nominal site altitude 100m E. Longit. Latitude U.T. Sun Moon TanZ PA WA CA o ' o ' h m s Alt Alt Az o o o -123 0.0 37 51.3 8 11 25 4 91 13.37 208.5 186.81 5.17S -122 56.0 37 51.3 8 11 25 4 91 13.20 208.5 186.82 5.18S -122 52.0 37 51.3 8 11 26 4 91 13.03 208.5 186.83 5.19S -122 48.0 37 51.2 8 11 27 4 91 12.87 208.6 186.85 5.21S -122 44.0 37 51.2 8 11 28 4 91 12.71 208.6 186.86 5.22S -122 40.0 37 51.2 8 11 29 5 91 12.55 208.6 186.87 5.23S -122 36.0 37 51.1 8 11 30 5 91 12.40 208.6 186.89 5.25S -122 32.0 37 51.1 8 11 31 5 91 12.25 208.6 186.90 5.26S -122 28.0 37 51.1 8 11 32 5 91 12.11 208.6 186.91 5.27S -122 24.0 37 51.0 8 11 33 5 92 11.96 208.6 186.93 5.29S -122 20.0 37 51.0 8 11 34 5 92 11.82 208.7 186.94 5.30S -122 16.0 37 50.9 8 11 35 5 92 11.69 208.7 186.95 5.31S -122 12.0 37 50.9 8 11 36 5 92 11.56 208.7 186.97 5.33S -122 8.0 37 50.8 8 11 37 5 92 11.43 208.7 186.98 5.34S -122 4.0 37 50.8 8 11 38 5 92 11.30 208.7 186.99 5.35S -122 0.0 37 50.7 8 11 39 5 92 11.17 208.7 187.01 5.37S -121 56.0 37 50.7 8 11 40 5 92 11.05 208.7 187.02 5.38S -121 52.0 37 50.6 8 11 41 5 92 10.93 208.7 187.03 5.39S -121 48.0 37 50.6 8 11 42 5 92 10.82 208.8 187.05 5.41S -121 44.0 37 50.5 8 11 43 5 92 10.70 208.8 187.06 5.42S -121 40.0 37 50.4 8 11 44 5 92 10.59 208.8 187.07 5.43S -121 36.0 37 50.4 8 11 45 5 92 10.48 208.8 187.09 5.45S -121 32.0 37 50.3 8 11 46 6 92 10.37 208.8 187.10 5.46S -121 28.0 37 50.2 8 11 47 6 92 10.27 208.8 187.11 5.47S -121 24.0 37 50.2 8 11 48 6 92 10.16 208.8 187.13 5.49S -121 20.0 37 50.1 8 11 49 6 92 10.06 208.9 187.14 5.50S -121 16.0 37 50.0 8 11 50 6 92 9.96 208.9 187.15 5.51S -121 12.0 37 49.9 8 11 51 6 92 9.87 208.9 187.17 5.53S -121 8.0 37 49.9 8 11 52 6 92 9.77 208.9 187.18 5.54S -121 4.0 37 49.8 8 11 53 6 92 9.68 208.9 187.19 5.56S -121 0.0 37 49.7 8 11 54 6 92 9.58 208.9 187.21 5.57S Path coordinates are referred to WGS84 (as used by GPS). 1712 is triple : 3.6 10.6 305" 285.0 : 3.6 8.8 539" 86.0 Graze Path of component #2 132.70km North, and 618.4 secs. earlier cf. primary. Graze Path of component #3 529.74km South, and 945.2 secs. later cf. primary. Librations Long -3.01 Lat -1.27 P +187.3 D -0.6 Illumination of moon 54%- Elongation of Moon 94 Vertical Profile Scale 1.89 km/arcsec at mean distance of moon Horizontal Scale Factor 1.84 deg/min