Predictions for Grazing Occultation of Venus, 2015 Jul 18
Graze profile
Grazing Occultation of Venus Magnitude -4.7 [Red = -4.7]
Date: 2015 Jul 18 23h 35m, to 2015 Jul 18 23h 46m
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
Inner limit - Venus fully obscured
136 30 0 -29 42 12 23 34 43 19 0 79 99.00 191.9 170.17 11.72S
137 0 0 -29 37 28 23 34 45 20 1 79 99.00 191.9 170.22 11.67S
137 30 0 -29 32 46 23 34 48 20 1 79 58.80 192.0 170.27 11.62S
138 0 0 -29 28 6 23 34 51 20 1 79 40.10 192.0 170.32 11.57S
138 30 0 -29 23 29 23 34 55 21 2 78 30.39 192.1 170.37 11.52S
139 0 0 -29 18 56 23 34 59 21 2 78 24.42 192.1 170.43 11.46S
139 30 0 -29 14 26 23 35 5 22 3 78 20.41 192.2 170.48 11.41S
140 0 0 -29 10 1 23 35 10 22 3 78 17.51 192.2 170.53 11.36S
140 30 0 -29 5 40 23 35 17 22 4 77 15.33 192.3 170.58 11.31S
141 0 0 -29 1 23 23 35 24 23 4 77 13.62 192.3 170.64 11.25S
141 30 0 -28 57 11 23 35 32 23 5 77 12.24 192.4 170.70 11.20S
142 0 0 -28 53 4 23 35 40 24 5 77 11.11 192.4 170.75 11.14S
142 30 0 -28 49 2 23 35 49 24 6 76 10.17 192.5 170.81 11.08S
143 0 0 -28 45 5 23 35 59 24 6 76 9.37 192.6 170.87 11.02S
143 30 0 -28 41 14 23 36 10 25 7 76 8.68 192.6 170.93 10.96S
144 0 0 -28 37 27 23 36 21 25 7 75 8.08 192.7 170.99 10.90S
144 30 0 -28 33 47 23 36 33 26 8 75 7.56 192.7 171.06 10.84S
145 0 0 -28 30 12 23 36 46 26 8 75 7.09 192.8 171.12 10.77S
145 30 0 -28 26 42 23 37 0 26 9 75 6.68 192.9 171.19 10.70S
146 0 0 -28 23 19 23 37 14 27 9 74 6.31 192.9 171.26 10.64S
146 30 0 -28 20 2 23 37 30 27 9 74 5.98 193.0 171.33 10.57S
147 0 0 -28 16 51 23 37 46 27 10 74 5.68 193.1 171.40 10.50S
147 30 0 -28 13 46 23 38 3 28 10 74 5.40 193.2 171.47 10.42S
148 0 0 -28 10 48 23 38 20 28 11 73 5.15 193.2 171.54 10.35S
148 30 0 -28 7 57 23 38 39 29 11 73 4.92 193.3 171.62 10.28S
149 0 0 -28 5 12 23 38 58 29 12 73 4.71 193.4 171.69 10.20S
149 30 0 -28 2 34 23 39 19 29 12 72 4.51 193.5 171.77 10.12S
150 0 0 -28 0 3 23 39 40 30 13 72 4.33 193.5 171.85 10.04S
150 30 0 -27 57 40 23 40 2 30 14 72 4.16 193.6 171.93 9.96S
151 0 0 -27 55 23 23 40 25 30 14 71 4.00 193.7 172.01 9.88S
151 30 0 -27 53 15 23 40 50 31 15 71 3.85 193.8 172.10 9.80S
152 0 0 -27 51 15 23 41 15 31 15 71 3.72 193.9 172.18 9.71S
152 30 0 -27 49 22 23 41 41 31 16 70 3.59 194.0 172.27 9.62S
153 0 0 -27 47 37 23 42 7 32 16 70 3.47 194.0 172.36 9.53S
153 30 0 -27 46 0 23 42 35 32 17 70 3.35 194.1 172.45 9.44S
154 0 0 -27 44 31 23 43 4 33 17 69 3.24 194.2 172.54 9.35S
154 30 0 -27 43 11 23 43 34 33 18 69 3.14 194.3 172.64 9.25S
155 0 0 -27 42 0 23 44 5 33 18 69 3.04 194.4 172.74 9.16S
Outer limit - Venus just touches the moon
136 30 0 -30 45 55 23 36 10 19 0 79 99.00 191.9 170.25 11.63S
137 0 0 -30 41 12 23 36 13 19 1 79 90.58 192.0 170.29 11.58S
137 30 0 -30 36 30 23 36 16 20 1 79 53.01 192.0 170.34 11.53S
138 0 0 -30 31 51 23 36 20 20 2 78 37.41 192.1 170.39 11.49S
138 30 0 -30 27 16 23 36 24 20 2 78 28.88 192.1 170.44 11.44S
139 0 0 -30 22 43 23 36 28 21 2 78 23.49 192.2 170.49 11.38S
139 30 0 -30 18 15 23 36 34 21 3 78 19.77 192.2 170.55 11.32S
140 0 0 -30 13 52 23 36 40 22 3 77 17.06 192.3 170.60 11.27S
140 30 0 -30 9 32 23 36 47 22 4 77 14.99 192.3 170.66 11.22S
141 0 0 -30 5 17 23 36 54 22 4 77 13.36 192.4 170.71 11.16S
141 30 0 -30 1 7 23 37 2 23 5 77 12.05 192.5 170.77 11.11S
142 0 0 -29 57 2 23 37 11 23 5 76 10.96 192.5 170.83 11.05S
142 30 0 -29 53 2 23 37 20 24 6 76 10.05 192.6 170.88 10.99S
143 0 0 -29 49 7 23 37 30 24 6 76 9.27 192.6 170.94 10.93S
143 30 0 -29 45 18 23 37 41 24 7 75 8.60 192.7 171.00 10.87S
144 0 0 -29 41 34 23 37 53 25 7 75 8.02 192.8 171.07 10.81S
144 30 0 -29 37 56 23 38 5 25 8 75 7.51 192.8 171.13 10.74S
145 0 0 -29 34 24 23 38 18 25 8 75 7.05 192.9 171.20 10.68S
145 30 0 -29 30 57 23 38 32 26 9 74 6.65 192.9 171.26 10.61S
146 0 0 -29 27 37 23 38 47 26 9 74 6.29 193.0 171.33 10.55S
146 30 0 -29 24 23 23 39 3 27 10 74 5.96 193.1 171.40 10.48S
147 0 0 -29 21 15 23 39 19 27 10 73 5.66 193.2 171.47 10.41S
147 30 0 -29 18 13 23 39 36 27 11 73 5.39 193.2 171.54 10.33S
148 0 0 -29 15 18 23 39 54 28 11 73 5.14 193.3 171.62 10.26S
148 30 0 -29 12 30 23 40 13 28 11 73 4.92 193.4 171.69 10.19S
149 0 0 -29 9 49 23 40 33 28 12 72 4.71 193.5 171.77 10.11S
149 30 0 -29 7 15 23 40 54 29 12 72 4.51 193.5 171.84 10.03S
150 0 0 -29 4 48 23 41 16 29 13 72 4.33 193.6 171.92 9.95S
150 30 0 -29 2 29 23 41 38 29 14 71 4.16 193.7 172.01 9.87S
151 0 0 -29 0 16 23 42 2 30 14 71 4.01 193.8 172.09 9.79S
151 30 0 -28 58 12 23 42 26 30 15 71 3.86 193.9 172.17 9.71S
152 0 0 -28 56 17 23 42 51 30 15 70 3.72 193.9 172.26 9.62S
152 30 0 -28 54 28 23 43 18 31 16 70 3.59 194.0 172.34 9.53S
153 0 0 -28 52 48 23 43 45 31 16 70 3.47 194.1 172.43 9.44S
153 30 0 -28 51 16 23 44 13 32 17 69 3.36 194.2 172.52 9.35S
154 0 0 -28 49 53 23 44 43 32 17 69 3.25 194.3 172.62 9.26S
154 30 0 -28 48 38 23 45 13 32 18 69 3.15 194.4 172.71 9.16S
155 0 0 -28 47 32 23 45 45 33 18 68 3.05 194.5 172.81 9.07S
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.
Projected diameter of star 67 meters [Estimated]
Librations Long +2.94 Lat +2.99
P +171.42 D +3.66
Illumination of moon 9%+
Elongation of Moon 34
Vertical Profile Scale 2.66 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.68 deg/min
At longitude 146.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
6.6 1.0 2.1 2.6 2.9 3.0 3.1 3.1
8.6 1.0 2.1 2.6 2.9 3.0 3.1 3.1
10.6 1.0 2.1 2.6 2.9 3.0 3.1 3.1
12.6 1.0 2.1 2.6 2.9 3.0 3.1 3.1
14.6 1.0 2.1 2.6 2.9 3.0 3.1 3.1
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
AU Mid 143.0 -30.6 145km 23 36 44
Brisbane 153.1 -27.5 96km 23 42 59
Pt Macquarie 152.8 -31.4 339km 23 42 47
Lunar Limb Profile
