Predictions for Grazing Occultation of ZC2968, 2015 Aug 27
Graze profile
Grazing Occultation of 2968SB9 Magnitude 6.1 [Red = 0.0]
Date: 2015 Aug 27 15h 45m, to 2015 Aug 27 16h 15m
Nominal site altitude 50m
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 -33 55 38 15 44 46 48 287 0.90 161.2 175.34 13.90S
135 30 0 -33 42 4 15 45 43 48 286 0.91 161.1 175.31 13.92S
136 0 0 -33 28 28 15 46 39 47 285 0.93 161.1 175.30 13.94S
136 30 0 -33 14 49 15 47 35 47 284 0.95 161.1 175.29 13.95S
137 0 0 -33 1 8 15 48 30 46 283 0.97 161.1 175.28 13.96S
137 30 0 -32 47 25 15 49 25 45 283 0.98 161.1 175.27 13.97S
138 0 0 -32 33 41 15 50 20 45 282 1.00 161.1 175.26 13.97S
138 30 0 -32 19 56 15 51 14 44 281 1.02 161.1 175.26 13.98S
139 0 0 -32 6 9 15 52 7 44 281 1.04 161.1 175.25 13.98S
139 30 0 -31 52 22 15 53 1 43 280 1.06 161.1 175.25 13.98S
140 0 0 -31 38 35 15 53 53 43 279 1.09 161.1 175.26 13.98S
140 30 0 -31 24 47 15 54 45 42 278 1.11 161.1 175.26 13.98S
141 0 0 -31 11 0 15 55 37 42 278 1.13 161.1 175.26 13.97S
141 30 0 -30 57 12 15 56 27 41 277 1.15 161.1 175.27 13.96S
142 0 0 -30 43 25 15 57 18 40 277 1.18 161.1 175.28 13.95S
142 30 0 -30 29 39 15 58 7 40 276 1.20 161.1 175.29 13.94S
143 0 0 -30 15 54 15 58 57 39 275 1.23 161.1 175.30 13.93S
143 30 0 -30 2 11 15 59 45 39 275 1.25 161.1 175.32 13.92S
144 0 0 -29 48 28 16 0 33 38 274 1.28 161.2 175.33 13.90S
144 30 0 -29 34 48 16 1 20 37 274 1.31 161.2 175.35 13.89S
145 0 0 -29 21 9 16 2 6 37 273 1.33 161.2 175.37 13.87S
145 30 0 -29 7 32 16 2 52 36 273 1.36 161.2 175.39 13.85S
146 0 0 -28 53 58 16 3 37 36 272 1.39 161.2 175.41 13.82S
146 30 0 -28 40 26 16 4 22 35 272 1.42 161.3 175.43 13.80S
147 0 0 -28 26 57 16 5 6 34 271 1.46 161.3 175.46 13.78S
147 30 0 -28 13 31 16 5 49 34 271 1.49 161.3 175.48 13.75S
148 0 0 -28 0 8 16 6 31 33 270 1.52 161.3 175.51 13.72S
148 30 0 -27 46 48 16 7 12 33 270 1.56 161.4 175.54 13.69S
149 0 0 -27 33 32 16 7 53 32 269 1.59 161.4 175.57 13.66S
149 30 0 -27 20 19 16 8 33 31 269 1.63 161.4 175.60 13.63S
150 0 0 -27 7 11 16 9 13 31 268 1.67 161.5 175.63 13.60S
150 30 0 -26 54 6 16 9 51 30 268 1.71 161.5 175.67 13.57S
151 0 0 -26 41 5 16 10 29 30 268 1.75 161.5 175.70 13.53S
151 30 0 -26 28 8 16 11 6 29 267 1.80 161.6 175.74 13.49S
152 0 0 -26 15 15 16 11 43 29 267 1.84 161.6 175.78 13.46S
152 30 0 -26 2 27 16 12 18 28 266 1.89 161.6 175.81 13.42S
153 0 0 -25 49 44 16 12 53 27 266 1.93 161.7 175.85 13.38S
153 30 0 -25 37 5 16 13 27 27 266 1.98 161.7 175.89 13.34S
154 0 0 -25 24 32 16 14 1 26 265 2.04 161.8 175.93 13.30S
154 30 0 -25 12 3 16 14 33 26 265 2.09 161.8 175.98 13.26S
155 0 0 -24 59 39 16 15 5 25 265 2.15 161.8 176.02 13.22S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level. The path
is adjusted for the effects of refraction at low moon altitudes.
2968 is multiple:
Graze prediction is based on the mean position of Ba,Bb 6.16 9.14 0.48" 61.4
(BAR 12) Graze path of Ba 0.01 km north, and 0.1 secs earlier compared to prediction
Graze path of Bb 0.17 km south, and 0.9 secs later compared to prediction
Ba,Bb 6.16 9.14 0.48" 61.4 (BAR 12) Graze path of Bb 0.18 km south, and 1.0 secs later compared to Ba
Ba,Bb 6.16 9.14 0.50" 58.5 (BAR 12) Graze path of Bb 0.24 km south, and 1.0 secs later compared to Ba
BA 6.1 3.2 205" 87.0 (STFA 52) Graze path of A 124.05 km north, and 402.9 secs later compared to B
BC 6.1 8.8 397" 110.9 (STFA 52) Graze path of C 561.73 km north, and 622.4 secs later compared to B
C A S S I N I R E G I O N G R A Z E
Librations Long -5.72 Lat -6.17
P +175.95 D -6.35
Illumination of moon 93%+
Elongation of Moon 150
Vertical Profile Scale 2.12 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.73 deg/min
At longitude 145.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
9.9 4.4 5.8 6.6 7.1 7.4 7.6 7.7
11.9 4.4 5.8 6.6 7.1 7.4 7.6 7.7
13.9 4.7 6.1 6.8 7.3 7.6 7.8 8.0
15.9 5.1 6.5 7.3 7.8 8.1 8.3 8.5
17.9 5.3 6.8 7.5 8.0 8.3 8.6 8.7
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
AU Mid 143.0 -30.6 33km 15 58 56
Lunar Limb Profile
