Grazing Occultation of 2349 SB1 Magnitude 2.9v 2349 = Al Niyat = sigma Scorpii Date 2006 February 21 (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 174 48 0 -40 16 31 16 22 9 58 73 0.62 22.8 14.17 -13.57N 174 58 0 -40 22 21 16 22 33 59 73 0.61 22.8 14.13 -13.54N 175 8 0 -40 28 10 16 22 56 59 72 0.61 22.7 14.09 -13.50N 175 18 0 -40 33 58 16 23 20 59 72 0.60 22.7 14.06 -13.46N 175 28 0 -40 39 43 16 23 44 59 71 0.60 22.7 14.02 -13.43N 175 38 0 -40 45 27 16 24 8 59 71 0.60 22.6 13.98 -13.39N 175 48 0 -40 51 8 16 24 31 59 70 0.59 22.6 13.95 -13.35N 175 58 0 -40 56 49 16 24 55 60 70 0.59 22.6 13.91 -13.32N 176 8 0 -41 2 27 16 25 19 60 70 0.58 22.5 13.87 -13.28N 176 18 0 -41 8 3 16 25 43 60 69 0.58 22.5 13.83 -13.24N 176 28 0 -41 13 38 16 26 7 60 69 0.58 22.4 13.80 -13.20N Path coordinates are referred to WGS84 (as used by GPS). 2349 is multiple : 3.3 5.3 0.000" 0.0 : 3.0 5.1 0.40" 249.0 : 2.8 8.4 20.0" 273.0 Graze Path of component #2 0.00km South, and 0.0 secs. earlier cf. primary. Graze Path of component #3 0.55km North, and 0.7 secs. earlier cf. primary. Graze Path of component #4 13.41km North, and 46.7 secs. earlier cf. primary. 2349 = sig Sco, 2.86 to 2.94 V , Type BCEP, Period 0.2468390 days, Phase 0.78 Risetime = 3.0 hours Librations Long -7.66 Lat +5.64 P +13.1 D -7.0 Illumination of moon 46%- Elongation of Moon 85 Vertical Profile Scale 2.02 km/arcsec at mean distance of moon Horizontal Scale Factor 1.49 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 -17.2 3.2 4.6 5.4 5.9 6.2 6.4 6.6 -15.2 3.2 4.6 5.4 5.9 6.2 6.4 6.6 -13.2 3.2 4.6 5.4 5.9 6.2 6.4 6.6 -11.2 3.2 4.6 5.4 5.9 6.2 6.4 6.6 -9.2 3.2 4.6 5.4 5.9 6.2 6.4 6.6