Grazing Occultation of 1099wM1 Magnitude 5.8 [Red = 5.0] s R1099 = 52 Geminorum Date: 2008 Sep 23 9h 28m, to 2008 Sep 23 9h 30m Nominal site altitude 282m E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA o ' " o ' " h m s Alt Alt Az o o o -124 15 0 38 38 49 9 27 33 16 71 3.44 3.5 357.47 4.52N -124 0 0 38 45 21 9 27 41 16 71 3.39 3.5 357.50 4.49N -123 45 0 38 51 51 9 27 48 17 71 3.34 3.6 357.52 4.47N -123 30 0 38 58 21 9 27 56 17 71 3.29 3.6 357.54 4.45N -123 15 0 39 4 49 9 28 4 17 72 3.24 3.6 357.56 4.43N -123 0 0 39 11 15 9 28 11 17 72 3.19 3.6 357.58 4.41N -122 45 0 39 17 41 9 28 19 18 72 3.14 3.6 357.60 4.39N -122 30 0 39 24 5 9 28 27 18 72 3.10 3.7 357.62 4.37N -122 15 0 39 30 28 9 28 35 18 72 3.05 3.7 357.65 4.34N -122 0 0 39 36 50 9 28 43 18 73 3.01 3.7 357.67 4.32N -121 45 0 39 43 10 9 28 52 19 73 2.97 3.7 357.69 4.30N -121 30 0 39 49 28 9 29 0 19 73 2.93 3.8 357.71 4.28N -121 15 0 39 55 46 9 29 9 19 73 2.89 3.8 357.74 4.25N -121 0 0 40 2 2 9 29 17 19 73 2.85 3.8 357.76 4.23N -120 45 0 40 8 16 9 29 26 20 74 2.81 3.8 357.78 4.21N -120 30 0 40 14 30 9 29 35 20 74 2.77 3.8 357.81 4.18N -120 15 0 40 20 41 9 29 43 20 74 2.74 3.9 357.83 4.16N -120 0 0 40 26 52 9 29 52 20 74 2.70 3.9 357.86 4.13N -119 45 0 40 33 1 9 30 1 21 74 2.67 3.9 357.88 4.11N -119 30 0 40 39 8 9 30 11 21 75 2.64 3.9 357.91 4.08N -119 15 0 40 45 14 9 30 20 21 75 2.60 4.0 357.93 4.06N Path coordinates are referred to WGS84 (as used by GPS), with the nominal site altitude being referenced to Mean Sea Level. Projected diameter of star 6 meters 1099 = NSV 03469, 5.79, range 0.08 to ( 0.08V 1099 is double: AB 6.0 12.7 31" 304.5 Librations Long +3.82 Lat -3.01 P +357.47 D +3.12 Illumination of moon 36%- Elongation of Moon 74 Vertical Profile Scale 2.02 km/arcsec at mean distance of moon Horizontal Scale Factor 1.99 deg/min At longitude -121.75: Limiting Magnitudes for various telescope apertures (in cm) CA\Tdia 5 10 15 20 25 30 35 0.3 4.6 6.0 6.7 7.2 7.4 7.6 7.8 2.3 4.6 6.0 6.8 7.2 7.5 7.7 7.8 4.3 4.7 6.1 6.8 7.2 7.5 7.7 7.8 6.3 5.4 6.8 7.6 8.0 8.4 8.6 8.7 8.3 5.4 6.8 7.6 8.1 8.4 8.6 8.8 Results of Observer Scan UT Site Long. Lat. Dist. h m s IOTAWest -121.7 37.1 258km 9 28 54 BREIT IDEAS Obs - 12inch LX200 -121.7 37.1 258km 9 28 54