This is a daytime occultation
Grazing Occultation of 810 SB7 Magnitude 1.6 810 = El Nath = beta Tauri Date 2005 October 21 (Friday) 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 137 0 0 -32 41 49 21 51 38 22 10 314 5.44 184.6 187.56 11.95S 137 10 0 -32 47 44 21 51 44 22 10 314 5.54 184.6 187.57 11.96S 137 20 0 -32 53 39 21 51 50 22 10 314 5.65 184.6 187.57 11.97S 137 30 0 -32 59 34 21 51 56 22 10 314 5.75 184.6 187.58 11.98S 137 40 0 -33 5 30 21 52 2 22 10 314 5.86 184.6 187.59 11.98S 137 50 0 -33 11 26 21 52 8 22 9 313 5.98 184.6 187.59 11.99S 138 0 0 -33 17 23 21 52 13 23 9 313 6.10 184.6 187.60 12.00S 138 10 0 -33 23 20 21 52 18 23 9 313 6.22 184.6 187.60 12.00S 138 20 0 -33 29 17 21 52 24 23 9 313 6.35 184.6 187.61 12.01S 138 30 0 -33 35 15 21 52 29 23 9 313 6.49 184.6 187.61 12.01S 138 40 0 -33 41 13 21 52 34 23 9 313 6.63 184.6 187.62 12.02S 138 50 0 -33 47 11 21 52 39 23 8 313 6.77 184.6 187.62 12.02S 139 0 0 -33 53 10 21 52 43 23 8 313 6.92 184.6 187.63 12.02S 139 10 0 -33 59 9 21 52 48 24 8 313 7.08 184.6 187.63 12.03S 139 20 0 -34 5 8 21 52 52 24 8 312 7.25 184.6 187.63 12.03S 139 30 0 -34 11 7 21 52 57 24 8 312 7.42 184.7 187.64 12.04S 139 40 0 -34 17 7 21 53 1 24 7 312 7.60 184.7 187.64 12.04S 139 50 0 -34 23 8 21 53 5 24 7 312 7.79 184.7 187.64 12.04S 140 0 0 -34 29 8 21 53 9 24 7 312 7.99 184.7 187.65 12.04S 140 10 0 -34 35 9 21 53 13 25 7 312 8.19 184.7 187.65 12.05S 140 20 0 -34 41 10 21 53 17 25 7 312 8.41 184.7 187.65 12.05S 140 30 0 -34 47 11 21 53 21 25 7 312 8.64 184.7 187.65 12.05S 140 40 0 -34 53 12 21 53 24 25 6 312 8.88 184.7 187.65 12.05S 140 50 0 -34 59 14 21 53 28 25 6 311 9.14 184.7 187.65 12.05S Path coordinates are referred to WGS84 (as used by GPS). 810 is triple : 2.6 2.6 0.100" 270.0 : 1.6 33" 239.0 Graze Path of component #2 0.02km North, and 0.2 secs. earlier cf. primary. Graze Path of component #3 55.67km North, and 63.7 secs. earlier cf. primary. C A S S I N I R E G I O N G R A Z E Librations Long +4.91 Lat -7.08 P +187.1 D -7.4 Illumination of moon 79%- Elongation of Moon 126 Vertical Profile Scale 2.94 km/arcsec at mean distance of moon Horizontal Scale Factor 1.57 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 8.1 0.7 1.8 2.2 2.4 2.6 2.6 2.7 10.1 0.7 1.8 2.2 2.4 2.6 2.6 2.7 12.1 0.7 1.8 2.2 2.4 2.6 2.6 2.7 14.1 0.7 1.8 2.2 2.4 2.6 2.6 2.7 16.1 0.7 1.8 2.2 2.4 2.6 2.6 2.7