Grazing Occultation of 2644 cF8 Magnitude 6.4 Date 2006 February 23 (Thursday) 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 174 30 0 -38 18 17 13 44 3 9 119 5.99 187.1 189.12 11.43S 174 40 0 -38 24 30 13 44 7 10 119 5.88 187.1 189.12 11.43S 174 50 0 -38 30 43 13 44 11 10 118 5.77 187.1 189.12 11.44S 175 0 0 -38 36 57 13 44 15 10 118 5.67 187.1 189.12 11.44S 175 10 0 -38 43 11 13 44 19 10 118 5.57 187.1 189.12 11.44S 175 20 0 -38 49 26 13 44 24 10 118 5.47 187.1 189.12 11.44S 175 30 0 -38 55 40 13 44 28 11 118 5.38 187.1 189.12 11.44S 175 40 0 -39 1 55 13 44 32 11 118 5.29 187.1 189.12 11.44S 175 50 0 -39 8 10 13 44 36 11 118 5.20 187.1 189.12 11.44S 176 0 0 -39 14 25 13 44 41 11 118 5.12 187.1 189.12 11.43S 176 10 0 -39 20 41 13 44 45 11 117 5.04 187.1 189.12 11.43S 176 20 0 -39 26 57 13 44 50 11 117 4.96 187.1 189.12 11.43S 176 30 0 -39 33 13 13 44 55 12 117 4.88 187.1 189.12 11.43S 176 40 0 -39 39 29 13 44 59 12 117 4.80 187.1 189.12 11.43S 176 50 0 -39 45 45 13 45 4 12 117 4.73 187.1 189.12 11.43S 177 0 0 -39 52 1 13 45 9 12 117 4.66 187.1 189.12 11.43S 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 0.03km South, and 0.2 secs. later cf. primary. Librations Long -6.34 Lat +6.18 P +188.4 D +7.4 Illumination of moon 26%- Elongation of Moon 61 Vertical Profile Scale 2.31 km/arcsec at mean distance of moon Horizontal Scale Factor 2.19 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 7.4 5.2 6.6 7.4 7.9 8.2 8.4 8.5 9.4 5.3 6.7 7.5 7.9 8.3 8.5 8.6 11.4 5.4 6.8 7.5 8.0 8.3 8.6 8.7 13.4 5.4 6.9 7.6 8.1 8.4 8.6 8.8 15.4 5.5 6.9 7.7 8.2 8.5 8.7 8.9