Grazing Occultation of 2366 dM1 Magnitude 1.1v 2366 = Antares = alpha Scorpii Date 2006 December 19 (Tuesday) 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 114 0 0 -34 5 8 4 7 41 79 74 294 0.29 11.1 2.74 -17.39N 114 10 0 -34 5 39 4 8 8 79 74 293 0.29 11.0 2.66 -17.31N 114 20 0 -34 6 8 4 8 35 79 74 293 0.29 10.9 2.58 -17.23N 114 30 0 -34 6 35 4 9 2 79 73 293 0.30 10.8 2.51 -17.15N 114 40 0 -34 7 1 4 9 29 79 73 292 0.30 10.7 2.43 -17.07N 114 50 0 -34 7 24 4 9 56 79 73 292 0.31 10.7 2.35 -16.99N 115 0 0 -34 7 46 4 10 23 79 73 291 0.31 10.6 2.27 -16.91N 115 10 0 -34 8 5 4 10 50 79 73 291 0.31 10.5 2.19 -16.83N 115 20 0 -34 8 23 4 11 17 79 72 291 0.32 10.4 2.11 -16.75N 115 30 0 -34 8 39 4 11 43 79 72 290 0.32 10.3 2.03 -16.67N 115 40 0 -34 8 54 4 12 10 79 72 290 0.33 10.3 1.95 -16.60N 115 50 0 -34 9 6 4 12 37 79 72 289 0.33 10.2 1.87 -16.51N 116 0 0 -34 9 17 4 13 3 79 71 289 0.34 10.1 1.79 -16.43N 116 10 0 -34 9 26 4 13 30 79 71 289 0.34 10.0 1.71 -16.35N 116 20 0 -34 9 33 4 13 56 79 71 288 0.34 9.9 1.63 -16.27N 116 30 0 -34 9 38 4 14 22 79 71 288 0.35 9.9 1.55 -16.20N 116 40 0 -34 9 42 4 14 49 79 71 288 0.35 9.8 1.47 -16.12N 116 50 0 -34 9 43 4 15 15 79 70 287 0.36 9.7 1.40 -16.04N 117 0 0 -34 9 43 4 15 41 79 70 287 0.36 9.6 1.32 -15.96N 117 10 0 -34 9 42 4 16 7 79 70 286 0.37 9.6 1.25 -15.89N 117 20 0 -34 9 38 4 16 33 79 70 286 0.37 9.5 1.17 -15.81N 117 30 0 -34 9 33 4 16 59 79 70 286 0.37 9.4 1.09 -15.74N 117 40 0 -34 9 25 4 17 25 79 69 286 0.38 9.3 1.02 -15.66N 117 50 0 -34 9 17 4 17 51 79 69 285 0.38 9.3 0.94 -15.58N 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 0.45km North, and 7.2 secs. earlier cf. primary. 2366 = alf Sco, 0.88 to 1.16 V , Type LC C A S S I N I R E G I O N G R A Z E Librations Long -5.02 Lat +6.33 P +0.4 D -6.2 Illumination of moon 2%- Elongation of Moon 18 Vertical Profile Scale 1.87 km/arcsec at mean distance of moon Horizontal Scale Factor 1.28 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 -19.6 0.4 1.8 2.6 3.1 3.4 3.7 3.8 -17.6 0.4 1.8 2.6 3.1 3.4 3.7 3.8 -15.6 0.4 1.8 2.6 3.1 3.4 3.7 3.8 -13.6 0.4 1.8 2.6 3.1 3.4 3.7 3.8 -11.6 0.4 1.9 2.6 3.1 3.5 3.7 3.9