Predictions for Grazing Occultation of ZC 3131, 2009 Oct 27
Grazing Occultation of 3131wF0 Magnitude 5.5 [Red = 5.3]
R3131 = 18 Aquarii
Date: 2009 Oct 27 10h 26m, to 2009 Oct 27 11h 29m
Nominal site altitude 5m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
135 0 0 -38 7 52 10 26 59 -11 64 345 0.48 144.2 160.86 18.43S
135 30 0 -37 47 6 10 28 20 64 343 0.48 144.1 160.72 18.57S
136 0 0 -37 25 59 10 29 42 65 341 0.48 143.9 160.58 18.71S
136 30 0 -37 4 30 10 31 5 65 339 0.47 143.8 160.44 18.85S
137 0 0 -36 42 40 10 32 30 65 337 0.47 143.7 160.31 18.98S
137 30 0 -36 20 29 10 33 56 65 335 0.47 143.5 160.18 19.11S
138 0 0 -35 57 57 10 35 23 65 333 0.47 143.4 160.04 19.25S
138 30 0 -35 35 5 10 36 51 65 330 0.47 143.3 159.92 19.37S
139 0 0 -35 11 52 10 38 20 65 328 0.47 143.2 159.80 19.49S
139 30 0 -34 48 20 10 39 50 65 326 0.47 143.0 159.69 19.60S
140 0 0 -34 24 28 10 41 22 65 324 0.48 142.9 159.58 19.71S
140 30 0 -34 0 17 10 42 55 64 321 0.48 142.8 159.48 19.81S
141 0 0 -33 35 48 10 44 28 64 319 0.48 142.7 159.38 19.91S
141 30 0 -33 11 1 10 46 3 64 317 0.49 142.6 159.29 20.00S
142 0 0 -32 45 57 10 47 38 64 315 0.49 142.6 159.20 20.09S
142 30 0 -32 20 36 10 49 15 64 313 0.50 142.5 159.12 20.17S
143 0 0 -31 55 0 10 50 52 63 311 0.50 142.4 159.03 20.25S
143 30 0 -31 29 10 10 52 30 63 308 0.51 142.3 158.96 20.33S
144 0 0 -31 3 5 10 54 9 63 306 0.52 142.3 158.90 20.39S
144 30 0 -30 36 48 10 55 48 62 304 0.53 142.2 158.84 20.45S
145 0 0 -30 10 20 10 57 28 62 302 0.54 142.1 158.79 20.50S
145 30 0 -29 43 41 10 59 9 61 300 0.55 142.1 158.75 20.54S
146 0 0 -29 16 53 11 0 49 61 299 0.56 142.1 158.71 20.58S
146 30 0 -28 49 58 11 2 30 60 297 0.57 142.0 158.68 20.61S
147 0 0 -28 22 55 11 4 11 60 295 0.58 142.0 158.66 20.63S
147 30 0 -27 55 48 11 5 53 59 293 0.59 142.0 158.64 20.65S
148 0 0 -27 28 36 11 7 34 59 292 0.61 142.0 158.64 20.65S
148 30 0 -27 1 22 11 9 15 58 290 0.62 142.0 158.64 20.65S
149 0 0 -26 34 7 11 10 56 57 289 0.64 142.0 158.64 20.64S
149 30 0 -26 6 52 11 12 37 57 287 0.65 142.0 158.66 20.63S
150 0 0 -25 39 39 11 14 17 56 286 0.67 142.0 158.68 20.61S
150 30 0 -25 12 28 11 15 57 55 284 0.69 142.1 158.71 20.58S
151 0 0 -24 45 22 11 17 36 55 283 0.71 142.1 158.75 20.54S
151 30 0 -24 18 22 11 19 14 54 282 0.72 142.1 158.79 20.49S
152 0 0 -23 51 29 11 20 52 53 281 0.74 142.2 158.84 20.44S
152 30 0 -23 24 44 11 22 29 53 279 0.76 142.3 158.90 20.39S
153 0 0 -22 58 8 11 24 5 52 278 0.79 142.3 158.97 20.32S
153 30 0 -22 31 43 11 25 40 51 277 0.81 142.4 159.04 20.25S
154 0 0 -22 5 29 11 27 13 50 276 0.83 142.5 159.11 20.18S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
3131 is double:
AB 5.5 13.0 52" 307.0 Graze path of B 99.07 km south, and 39.8 secs earlier compared to A
Librations Long -2.12 Lat -3.12
P +158.92 D -3.41
Illumination of moon 63%+
Elongation of Moon 105
Vertical Profile Scale 2.07 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.32 deg/min
At longitude 144.50:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
16.4 5.8 7.3 8.1 8.6 9.0 9.3 9.5
18.4 5.8 7.3 8.1 8.7 9.0 9.3 9.5
20.4 5.8 7.3 8.1 8.7 9.1 9.3 9.6
22.4 5.9 7.3 8.1 8.7 9.1 9.3 9.6
24.4 5.9 7.3 8.1 8.7 9.1 9.4 9.6
Lunar Limb Profile - Adelaide
Lunar Limb Profile - Rockhampton
