Predictions for Grazing Occultation of SAO118541, 2016 Aug 5
Graze profile
Grazing Occultation of 118541cF8 Magnitude 8.6 [Red = 0.0]
Date: 2016 Aug 05 6h 29m, to 2016 Aug 05 6h 35m
Nominal site altitude 100m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
167 0 0 -43 20 30.8 6 28 50 -6 18 301 2.99 23.6 359.67 1.88N
167 30 0 -43 29 5.3 6 29 11 -7 18 300 3.07 23.5 359.59 1.80N
168 0 0 -43 37 33.0 6 29 31 -7 18 300 3.15 23.4 359.51 1.72N
168 30 0 -43 45 54.1 6 29 51 -8 17 299 3.24 23.3 359.43 1.64N
169 0 0 -43 54 8.1 6 30 10 -8 17 299 3.33 23.3 359.35 1.56N
169 30 0 -44 2 15.4 6 30 28 -8 16 299 3.42 23.2 359.28 1.48N
170 0 0 -44 10 16.1 6 30 46 -9 16 298 3.52 23.1 359.20 1.41N
170 30 0 -44 18 10.3 6 31 4 -9 15 298 3.62 23.0 359.12 1.33N
171 0 0 -44 25 57.9 6 31 21 -10 15 297 3.73 22.9 359.05 1.26N
171 30 0 -44 33 38.6 6 31 38 -10 15 297 3.84 22.9 358.97 1.18N
172 0 0 -44 41 13.3 6 31 54 -11 14 296 3.96 22.8 358.90 1.11N
172 30 0 -44 48 41.8 6 32 9 -11 14 296 4.08 22.7 358.82 1.03N
173 0 0 -44 56 4.0 6 32 24 -11 13 296 4.21 22.6 358.75 0.96N
173 30 0 -45 3 20.0 6 32 39 -12 13 295 4.35 22.6 358.68 0.89N
174 0 0 -45 10 29.9 6 32 53 13 295 4.50 22.5 358.60 0.81N
174 30 0 -45 17 33.6 6 33 7 12 294 4.65 22.4 358.53 0.74N
175 0 0 -45 24 31.4 6 33 20 12 294 4.82 22.4 358.46 0.67N
175 30 0 -45 31 23.3 6 33 33 11 294 4.99 22.3 358.39 0.60N
176 0 0 -45 38 9.2 6 33 45 11 293 5.18 22.2 358.32 0.53N
176 30 0 -45 44 49.2 6 33 57 11 293 5.38 22.1 358.25 0.46N
177 0 0 -45 51 23.5 6 34 8 10 292 5.60 22.1 358.18 0.39N
177 30 0 -45 57 52.0 6 34 19 10 292 5.83 22.0 358.11 0.32N
178 0 0 -46 4 14.8 6 34 30 9 292 6.08 21.9 358.04 0.25N
178 30 0 -46 10 31.9 6 34 40 9 291 6.34 21.9 357.98 0.18N
179 0 0 -46 16 43.5 6 34 50 9 291 6.64 21.8 357.91 0.12N
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.
118541 is double:
Graze prediction is based on the mean position of AB 8.72 11.24 0.70" 4.0
(HDS1550) Graze path of A approximately 0.1 km north, and 0.0 secs later compared to prediction
Graze path of B approximately 1.3 km south, and 0.4 secs earlier compared to prediction
- refer to graze profile for exact distances
AB 8.72 11.24 0.70" 4.0 (HDS1550) Graze path of B approximately 1.4 km south, and 0.5 secs earlier compared to A
- refer to graze profile for exact distances
Librations Long +3.94 Lat -0.28
P +358.72 D +0.46
Illumination of moon 6%+
Elongation of Moon 28
Vertical Profile Scale approx. 2.18 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.73 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
-3.0 6.6 8.0 8.8 9.3 9.6 9.8 10.0
-1.0 7.1 8.6 9.4 9.9 10.2 10.5 10.7
1.0 7.2 8.6 9.4 10.0 10.3 10.6 10.8
3.0 7.2 8.7 9.5 10.0 10.4 10.6 10.8
5.0 7.2 8.7 9.5 10.0 10.4 10.7 10.9
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 138km 6 32 13.3
Dunedin 170.5 -45.9 164km 6 31 3.8
Lunar Limb Profile
