Grazing Occultation of 2366 dM1 Magnitude 1.1v 2366 = Antares = alpha Scorpii Date 2005 November 4 (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 147 0 0 -21 33 37 8 46 46 -6 22 249 2.44 181.6 173.80 15.33S 147 10 0 -21 29 8 8 46 54 -6 22 249 2.47 181.6 173.77 15.36S 147 20 0 -21 24 39 8 47 1 -6 22 249 2.49 181.5 173.76 15.38S 147 30 0 -21 20 9 8 47 9 -6 22 249 2.52 181.5 173.74 15.40S 147 40 0 -21 15 39 8 47 16 -7 21 249 2.54 181.5 173.72 15.42S 147 50 0 -21 11 8 8 47 23 -7 21 249 2.57 181.5 173.70 15.44S 148 0 0 -21 6 36 8 47 30 -7 21 249 2.60 181.5 173.68 15.45S 148 10 0 -21 2 4 8 47 37 -7 21 249 2.62 181.5 173.66 15.47S 148 20 0 -20 57 31 8 47 44 -7 21 249 2.65 181.4 173.65 15.49S 148 30 0 -20 52 58 8 47 51 -8 20 248 2.68 181.4 173.63 15.51S 148 40 0 -20 48 24 8 47 58 -8 20 248 2.71 181.4 173.61 15.52S 148 50 0 -20 43 50 8 48 5 -8 20 248 2.73 181.4 173.59 15.54S 149 0 0 -20 39 15 8 48 12 -8 20 248 2.76 181.4 173.58 15.56S 149 10 0 -20 34 39 8 48 18 -8 20 248 2.79 181.4 173.56 15.58S 149 20 0 -20 30 3 8 48 25 -9 19 248 2.83 181.3 173.54 15.59S 149 30 0 -20 25 26 8 48 31 -9 19 248 2.86 181.3 173.53 15.61S 149 40 0 -20 20 49 8 48 38 -9 19 248 2.89 181.3 173.51 15.62S 149 50 0 -20 16 12 8 48 44 -9 19 248 2.92 181.3 173.50 15.64S Path coordinates are referred to WGS84 (as used by GPS). 2366 is double : 0.9 5.4 2.5" 273.7 Graze Path of component #2 0.20km South, and 4.9 secs. earlier cf. primary. 2366 = alf Sco, 0.88 to 1.16 V , Type LC Librations Long -5.28 Lat +5.60 P +173.0 D +5.2 Illumination of moon 6%+ Elongation of Moon 28 Vertical Profile Scale 1.87 km/arcsec at mean distance of moon Horizontal Scale Factor 1.84 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 11.6 6.7 8.2 9.0 9.5 9.8 10.1 10.3 13.6 6.7 8.2 9.0 9.5 9.8 10.1 10.3 15.6 6.7 8.2 9.0 9.5 9.8 10.1 10.3 17.6 6.7 8.2 9.0 9.5 9.8 10.1 10.3 19.6 6.8 8.2 9.0 9.5 9.9 10.1 10.3