Predictions for Grazing Occultation of ZC 2366, 2008 Apr 23
Grazing Occultation of 2366 dM1 Magnitude 1.1v
2366 = Antares = alpha Scorpii
Date 2008 April 23 (Wednesday) 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
149 0 0 -30 23 1 17 37 28 74 279 0.30 7.0 358.00 8.42N
149 10 0 -30 22 49 17 37 59 73 279 0.30 6.9 357.91 8.51N
149 20 0 -30 22 35 17 38 30 73 278 0.30 6.8 357.82 8.60N
149 30 0 -30 22 19 17 39 2 73 278 0.31 6.7 357.72 8.70N
149 40 0 -30 22 1 17 39 33 73 278 0.31 6.6 357.63 8.79N
149 50 0 -30 21 41 17 40 4 72 278 0.32 6.5 357.54 8.88N
150 0 0 -30 21 19 17 40 34 72 277 0.32 6.4 357.45 8.98N
150 10 0 -30 20 54 17 41 5 72 277 0.33 6.3 357.35 9.07N
150 20 0 -30 20 28 17 41 36 72 277 0.33 6.2 357.26 9.16N
150 30 0 -30 20 0 17 42 7 71 276 0.34 6.2 357.17 9.25N
150 40 0 -30 19 30 17 42 37 71 276 0.34 6.1 357.08 9.34N
150 50 0 -30 18 57 17 43 8 71 276 0.35 6.0 356.99 9.43N
151 0 0 -30 18 23 17 43 38 71 276 0.35 5.9 356.90 9.52N
151 10 0 -30 17 47 17 44 8 70 275 0.36 5.8 356.81 9.61N
151 20 0 -30 17 9 17 44 39 70 275 0.36 5.7 356.72 9.70N
151 30 0 -30 16 28 17 45 9 70 275 0.37 5.6 356.63 9.79N
151 40 0 -30 15 46 17 45 39 70 275 0.37 5.5 356.54 9.88N
151 50 0 -30 15 2 17 46 9 69 275 0.38 5.4 356.45 9.97N
152 0 0 -30 14 16 17 46 39 69 274 0.38 5.3 356.36 10.06N
152 10 0 -30 13 28 17 47 9 69 274 0.39 5.3 356.28 10.14N
152 20 0 -30 12 38 17 47 39 69 274 0.39 5.2 356.19 10.23N
152 30 0 -30 11 46 17 48 8 68 274 0.40 5.1 356.10 10.32N
152 40 0 -30 10 52 17 48 38 68 273 0.40 5.0 356.01 10.40N
152 50 0 -30 9 56 17 49 7 68 273 0.41 4.9 355.93 10.49N
153 0 0 -30 8 58 17 49 37 68 273 0.41 4.8 355.84 10.58N
153 10 0 -30 7 58 17 50 6 67 273 0.42 4.7 355.76 10.66N
153 20 0 -30 6 57 17 50 35 67 273 0.42 4.7 355.67 10.75N
153 30 0 -30 5 53 17 51 5 67 272 0.43 4.6 355.59 10.83N
153 40 1 -30 4 48 17 51 34 67 272 0.43 4.5 355.50 10.92N
153 50 1 -30 3 40 17 52 3 66 272 0.44 4.4 355.42 11.00N
154 0 1 -30 2 31 17 52 32 66 272 0.44 4.3 355.33 11.09N
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 0.05km North, and 8.2 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 -1.97 Lat +6.29
P +355.1 D -5.9
Illumination of moon 90%-
Elongation of Moon 144
Vertical Profile Scale 1.87 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.19 deg/min
Limiting Magnitudes for various telescope apertures (in mm)
CA\Tdia 50 100 150 200 250 300 350
7.1 4.6 6.1 6.9 7.4 7.7 8.0 8.2
9.1 4.8 6.2 7.0 7.5 7.9 8.2 8.4
11.1 5.1 6.6 7.4 7.9 8.3 8.5 8.7
13.1 5.6 7.0 7.8 8.3 8.7 9.0 9.2
15.1 5.6 7.0 7.8 8.3 8.7 9.0 9.2
Lunar Limb Profile
